List of fault codes for Jac HFC4da1-2c China IV diesel engines

Fault Diagnosis

The electronic control unit (ECU) continuously monitors sensors, actuators, circuits, MILs (Malfunction Indicator Lights), battery voltage, and even itself. It performs reliability tests on sensor output signals, actuator drive signals, and internal signals. When there are faults in a specific link or a signal is deemed unreliable, the ECU immediately records fault information in the RAM fault memory. This information is stored as diagnostic trouble codes (DTCs) and displayed in the order of occurrence.

Jac HFC4da1-2c China-IV Diesel Engines

Faults can be classified as “steady faults” or “random faults” based on their frequency of occurrence. Steady faults refer to faults that persist beyond a set stabilization time, while random faults include temporary open circuit faults or poor connector contacts. If a fault remains for the set stabilization time, it is identified as a steady fault and stored as such. If the fault disappears, it is considered a random fault and marked as “nonexistent.” If the fault reoccurs, it is still classified as a random fault. However, historical faults marked as “existent” will not affect the normal operation of the engine.

Fault Types

• Short to positive power supply
• Short or open to ground (If there’s a pull-up or pull-down resistor for the input stage, an open circuit failure of the input port is identified as a short to positive power supply or ground fault)
• Unreliable signal

Fault Frequency Counter

Each identified fault has an associated frequency counter value (Hz), which determines the storage time of the fault information record in memory after the fault disappears. For initial fault identification, the frequency counter value is set to 40. If the fault condition remains unchanged, this value remains the same indefinitely. When the fault disappears and the condition is maintained for a certain period, the value is reduced by 1 after every successful engine start (when the engine speed exceeds the start completion speed). At this point, the ECU recognizes that the fault has disappeared but the fault information record still exists.

If a fault (such as a fault caused by poor contact) frequently appears and disappears, the frequency counter value is increased by 1, but it will not exceed the upper limit of 100.

When the frequency counter value reaches zero, all fault information records in the fault memory are completely cleared.

Fault Alarm

In the electronic control system, when there are faults in critical components such as the ECU, coolant temperature sensor, phase sensor, boost pressure sensor, revolution speed sensor, air flow meter, fuel injector, fan relay, etc., the ECU will emit alarms through MIL flashing until the faults are resolved.

Fault Reading

Fault information records can be retrieved from the electronic control unit using a fault diagnostic apparatus. However, certain faults can only be detected when the vehicle reaches specific operating conditions.

Clearing Fault Information Records

After resolving a fault, the fault information records in memory should be cleared. DTCs can be cleared using the following methods:

• When the ECU frequency counter value reaches 0, the fault information records in the fault memory are automatically cleared.
• The fault diagnostic apparatus can be used to clear the fault information records with the “Fault Memory Zero Clearing” command.

Fault Detection

After obtaining fault information records, only the suspected positions of fault occurrence are known. However, this does not mean that the faults have been detected. The cause of a fault may be a damaged electrical component (such as a sensor, actuator, or ECU), an open circuit in a wire, a wire shorted to ground or the battery positive pole, or even a mechanical failure. Faults manifest as various symptoms, and when these symptoms are detected, the fault information records should be checked for existence using a fault diagnostic apparatus or flash code. Then, the corresponding faults can be eliminated. Finally, faults should be detected based on the engine’s symptoms.

Jac engine Fault codes list

S/N	DTC	Meaning
1	P0030	The linear oxygen sensor heater circuit is open.
2	P0031	The linear oxygen sensor heater circuit is short to ground.
3	P0032	The linear oxygen sensor heater circuit is short to battery.
4	P0045	EGR valve circuit is open.
5	P0046	Overtemperature of EGR valve bridge-H chip
6	P0047	EGR valve circuit is short to ground.
7	P0048	EGR valve circuit is short to power supply.
8	P0068	Short-term drifting error in the process of throttle offset self-adaption
9	P0069	The absolute difference between intercooler downstream air pressure and ambient pressure is unreliable.
10	P0070	Reliability check function for ambient temperature
11	P0072	Too low ambient temperature
12	P0073	Too high ambient temperature
13	P0087	The minimum rail pressure is below the lower limit.
14	P0088	The maximum rail pressure is above the upper limit.
15	P0097	The signal level of intercooler downstream temperature is too low.
16	P0098	The signal level of intercooler downstream temperature is too high.
17	P00BE	The original value of fuel rail pressure is incoherent.
18	P0100	The supply voltage of air flow sensor exceeds the limit.
19	P0101	Timeout error of air flow sensor hardware signal
20	P0102	The sensitivity deviation of air flow sensor is below the lower limit.
21	P0103	The sensitivity deviation of air flow sensor is above the upper limit.
22	P010C	The signal level measured by air flow sensor is too low.
23	P010D	The signal level measured by air flow sensor is too high.
24	P0112	The voltage is below the lower limit of intake air temperature sensor.
25	P0113	The voltage is above the upper limit of intake air temperature sensor.
26	P0116	Error reported in dynamic reliability test of coolant temperature sensor
27	P0117	Coolant temperature signal level is too low (downstream).
28	P0118	Coolant temperature signal level is too high (downstream).
29	P0119	Error reported in static reliability test of coolant temperature sensor
30	P0122	The signal level of accelerator pedal position sensor 1 is relatively low.
31	P0123	The signal level of accelerator pedal position sensor 1 is relatively high.
32	P0127	The signal level of air temperature sensor is relatively high.

S/N	DTC	Meaning
33	P0128	Closed-loop control is actuated due to too low coolant temperature.
34	P0131	Oxygen sensor IAIPUNVG point is short to ground.
35	P0132	Oxygen sensor IAIPUNVG point is short to battery.
36	P0168	The signal level of fuel temperature sensor is relatively high.
37	P0182	The signal level of fuel temperature sensor is below the lower limit.
38	P0183	The signal level of fuel temperature sensor is above the upper limit.
39	P0191	The uncorrected rail pressure value is above the upper limit of drift.
40	P0192	The voltage of fuel rail pressure sensor is below the lower limit.
41	P0193	The voltage of fuel rail pressure sensor is above the upper limit.
42	P0194	The uncorrected rail pressure value is below the lower limit of drift.
43	P0195	Engine oil temperature signal fault on CAN
44	P0196	The oil temperature signal is unreliable.
45	P0197	The oil temperature signal level is too low.
46	P0198	The oil temperature signal level is too high.
47	P0201	The 1st cylinder fuel injector circuit is open.
48	P0202	The 2nd cylinder fuel injector circuit is open.
49	P0203	The 3rd cylinder fuel injector circuit is open.
50	P0204	The 4th cylinder fuel injector circuit is open.
51	P0205	The 5th cylinder fuel injector circuit is open.
52	P0206	The 6th cylinder fuel injector circuit is open.
53	P020A	An error is reported when the time for electrifying the 1st cylinder reaches to the maximum.
54	P020B	An error is reported when the time for electrifying the 2nd cylinder reaches to the maximum.
55	P020C	An error is reported when the time for electrifying the 3rd cylinder reaches to the maximum.
56	P020D	An error is reported when the time for electrifying the 4th cylinder reaches to the maximum.
57	P020E	An error is reported when the time for electrifying the 5th cylinder reaches to the maximum.
58	P020F	An error is reported when the time for electrifying the 6th cylinder reaches to the maximum.
59	P0215	Avoid resonance of double mass flywheel when stopping.
60	P0219	Overspeed protection for engine parts
61	P0222	The signal level of accelerator pedal position sensor 2 is relatively low.
62	P0223	The signal level of accelerator pedal position sensor 2 is relatively high.

S/N	DTC	Meaning
63	P022A	EGR valve circuit is open.
64	P022B	EGR valve circuit is short to ground.
65	P022C	EGR valve circuit is short to power supply.
66	P022E	The signal level at the output position of EGR cooling bypass valve position sensor is below the lower limit.
67	P022F	The signal level at the output position of EGR cooling bypass valve position sensor is above the upper limit.
68	P0234	The actual air intake flow is greater than the target set by system.
69	P0237	The original voltage of intercooler downstream air pressure sensor is below the lower limit.
70	P0238	The original voltage of intercooler downstream air pressure sensor is above the upper limit.
71	P023D	The long-term jitter of EGR valve exceeds the limit.
72	P023E	The short-term jitter of EGR valve exceeds the limit.
73	P024A	An error is reported when the temperature of EGR cooler bypass valve in electrifying phase is too high.
74	P024E	The signal level measured by EGR cooler bypass valve position sensor is below the limit.
75	P024F	The signal level measured by EGR cooler bypass valve position sensor is above the limit.
76	P0251	The fuel metering unit circuit is open.
77	P0252	The temperature of fuel metering unit driver module is too high.
78	P0253	The fuel metering unit circuit is short to ground.
79	P0254	The fuel metering unit circuit is short to power supply.
80	P0255	Poor contact between ECU and fuel metering unit
81	P025C	The voltage of fuel metering unit is below the lower limit.
82	P025D	The voltage of fuel metering unit is above the upper limit.
83	P0263	An error is reported when the electrifying time reaches to the maximum.
84	P0266	An error is reported when the electrifying time reaches to the maximum.
85	P0269	An error is reported when the electrifying time reaches to the maximum.
86	P0272	An error is reported when the electrifying time reaches to the maximum.
87	P0275	An error is reported when the electrifying time reaches to the maximum.
88	P0278	An error is reported when the electrifying time reaches to the maximum.
89	P0299.	The positive deviation of pressure controller is above the upper limit.
90	P0335	No signal from crankshaft
91	P0336	Crankshaft speed signal is irrational.
92	P0339	Camshaft speed signal is irrational.

S/N	DTC	Meaning
93	P0340	No signal from camshaft
94	P0341	The offset angle of camshaft is too large.
95	P0380	The preheating indicator light output circuit is high.
96	P0382	The preheating indicator light output circuit is low.
97	P0383	EGR valve circuit is short to ground.
98	P0384	EGR valve circuit is short to power supply.
99	P0401	The actual air intake flow is greater than the target set by system.
100	P0402	The actual air intake flow is less than the target set by system.
101	P0403	Overtemperature of EGR valve bridge-H chip
102	P0404	The short-term jitter of EGR valve exceeds the limit.
103	P0405	The original voltage of EGR valve sensor signal is below the lower limit.
104	P0406	The original voltage of EGR valve sensor signal is above the upper limit.
105	P0409	EGR valve circuit is open.
106	P040C	The signal level of EGR cooler downstream temperature sensor is relatively low.
107	P040D	The signal level of EGR cooler downstream temperature sensor is relatively high.
108	P0426	Upstream temperature fault of oxidation catalytic converter
109	P0427	The signal level of upstream temperature of oxidation catalytic converter is relatively low.
110	P0428	The signal level of upstream temperature of oxidation catalytic converter is relatively high.
111	P0480	EGR valve circuit is open.
112	P0481	EGR valve circuit is open.
113	P0483	Overtemperature of EGR valve bridge-H chip
114	P0484	Overtemperature of EGR valve bridge-H chip
115	P0487	CJ945 Power level no-load fault
116	P0488	CJ945 Overheating fault
117	P0489	EGR valve circuit is short to ground.
118	P0490	EGR valve circuit is short to power supply.
119	P0500	Wheel fault
120	P0501	Unreliable vehicle speed
121	P0503	Signal of speed sensor exceeds the upper limit.
122	P0504	Unreliable brake signal
123	P0520	Engine oil pressure signal fault on CAN
124	P0521	The maximum oil pressure signal is unreliable.
125	P0522	The signal level of oil pressure sensor is relatively low.

S/N	DTC	Meaning
126	P0523	The signal level of oil pressure sensor is relatively high.
127	P0524	The minimum oil pressure signal is unreliable.
128	P0532	The signal level measured by A/C coolant pressure sensor is too low.
129	P0533	The signal level measured by A/C coolant pressure sensor is too high.
130	P0537	The signal level of A/C evaporator’s temperature is relatively low.
131	P0538	The signal level of A/C evaporator’s temperature is relatively high.
132	P0562	The signal level of battery voltage sensor is too low.
133	P0563	The signal level of battery voltage sensor is too high.
134	P0571	False brake signal
135	P0575	The analog cruise control signal is unreliable.
136	P0576	The analog cruise control signal level is too low.
137	P0577	The analog cruise control signal level is too high.
138	P0578	The analog cruise control button is stuck.
139	P0607	Cy320 Hardware error reported
140	P060A	Error reported in monitoring too high voltage
141	P060D	The accelerator pedal voltage signal is unreliable.
142	P0611	The injection frequency is limited by system.
143	P061B	Error reported in torque comparison
144	P061C	The deviation difference between the engine speed signals obtained from the 1st level and the 2nd level is too large.
145	P061D	The set value of air system is limited by the torque limit of the function control unit.
146	P061F	Error reported in the process of throttle offset self-adaption
147	P0627	The control line of priming fuel pump is open.
148	P0628	The control line of priming fuel pump is short to ground.
149	P0629	The control line of priming fuel pump is short to power supply.
150	P062A	Overheating of priming pump
151	P062B	The set value of fuel injection amount is limited by the torque limit of the function control unit.
152	P062F	Error reported in EEP read-write
153	P0643	The sensor power supply monitoring fault 1
154	P0645	The compressor circuit is open.
155	P0646	The compressor circuit is short to ground in electrifying phase.
156	P0647	The compressor circuit is short to power supply in electrifying phase.
157	P0650	EGR valve circuit is open.
158	P0653	The sensor power supply monitoring fault 2

S/N	DTC	Meaning
159	P0660	The positive deviation of throttle controller exceeds the upper limit for a long time.
160	P0661	The Port 1 of EGR valve bridge-H chip is short to ground.
161	P0662	The Port 1 of EGR valve bridge-H chip is short to power supply.
162	P0663	Short circuit / overload of EGR valve bridge-H
163	P0664	The Port 2 of EGR valve bridge-H chip is short to ground.
164	P0665	The Port 2 of EGR valve bridge-H chip is short to power supply.
165	P0668	The voltage of ECU temperature sensor is below the lower limit.
166	P0669	The voltage of ECU temperature sensor is above the upper limit.
167	P0670	EGR valve circuit is open.
168	P0686	The main relay opens too early.
169	P0687	The main relay opens too late.
170	P0691	EGR valve circuit is short to power supply.
171	P0692	EGR valve circuit is short to ground.
172	P0693	EGR valve circuit is short to power supply.
173	P0694	EGR valve circuit is short to ground.
174	P0699	The sensor power supply monitoring fault 3
175	P0704	Clutch signal error
176	P0737	Then engine speed output signal circuit is open.
177	P0738	Then engine speed output signal circuit is short to ground.
178	P0739	Then engine speed output signal circuit is short to power supply.
179	P0A32	Parking counter error
180	P1000	The long-term jitter of EGR valve exceeds the limit.
181	P1001	The relief valve reaches to the maximum permissible opening position.
182	P1002	The relief valve reaches to the maximum permissible opening time.
183	P1003	The average fuel rail pressure regulated by relief valve is out of the range.
184	P1004	Check the flow equilibrium if the relief valve is opened normally.
185	P1005	The relief valve opens.
186	P1006	The relief valve is forced open to implement the pressure shock.
187	P1007	The torque in MAP for torque and fuel conversion does not increase along the fuel direction strictly and monotonically.
188	P1008	PhyMod_trq2qBas_MAP contains non-strict and non-monotonic Q curve.
189	P1011	The positive deviation of rail pressure is above the upper limit.
190	P1012	The negative deviation of rail pressure is below the lower limit.
191	P1013	The maximum negative deviation of rail pressure is below the lower limit.

S/N	DTC	Meaning
192	P1020	The heating drive circuit of fuel filter is open.
193	P1021	The heating drive circuit of fuel filter is short to power supply.
194	P1022	The heating drive circuit of fuel filter is short to ground.
195	P102A	The signal level of ambient pressure sensor is relatively high.
196	P102B	The signal level of ambient pressure sensor is relatively low.
197	P102C	The signal level of ambient temperature sensor is relatively high.
198	P102D	The signal level of ambient temperature sensor is relatively low.
199	P1030	Overtemperature of EGR valve bridge-H chip
200	P1031	Short circuit / overload of EGR valve bridge-H
201	P1032	Overcurrent of EGR valve bridge-H based on temperature
202	P1033	Under-voltage of EGR valve bridge-H
203	P1034	The EGR valve in closed status is stuck.
204	P1035	The EGR valve in open status is stuck.
205	P1036	The long-term jitter of EGR valve exceeds the limit.
206	P1037	An error is reported when the EGR valve is stuck in closing or opening.
207	P1038	The physical value of EGR valve position sensor is too high.
208	P1039	The physical value of EGR valve position sensor is too low.
209	P103A	The signal level of intercooler downstream temperature is relatively high.
210	P103B	The signal level of intercooler downstream temperature is relatively low.
211	P103C	EGR valve offset is unreliable.
212	P103D	The positive deviation of regeneration controller is above the limit.
213	P103E	The positive deviation of regeneration controller is below the limit.
214	P1040	Overheating of throttle bridge-H
215	P1041	Short circuit / overload of throttle bridge-H
216	P1042	Overtemperature caused by overcurrent of throttle bridge-H
217	P1043	Long-term deviation in the process of throttle self-adaption
218	P1044	Output circuit 2 of throttle bridge-H is short to ground.
219	P1045	Under-voltage of throttle bridge-H
220	P1046	Output circuit 2 of throttle bridge-H is short to power supply.
221	P1047	The physical value of throttle position is below the lower limit.
222	P1048	The throttle circuit is short to ground.
223	P1049	The physical value of throttle position is above the upper limit.
224	P104A	The throttle circuit is short to power supply.
225	P1060	OBD General fault 1

S/N	DTC	Meaning
226	P1061	OBD General fault 10
227	P1062	OBD General fault 11
228	P1063	OBD General fault 12
229	P1064	OBD General fault 13
230	P1065	OBD General fault 14
231	P1066	OBD General fault 15
232	P1067	OBD General fault 16
233	P1068	OBD General fault 2
234	P1069	OBD General fault 3
235	P106A	OBD General fault 4
236	P106B	OBD General fault 5
237	P106C	OBD General fault 6
238	P106D	OBD General fault 7
239	P106E	OBD General fault 8
240	P106F	OBD General fault 9
241	P1070	Blockage of particulate filter
242	P1100	The regulated idling value of air flow sensor is above the upper limit.
243	P1102	The duty cycle of air temperature sensor on the air flow meter is above the upper limit.
244	P1103	The duty cycle of air temperature sensor on the air flow meter is below the lower limit.
245	P1106	The time interval measured by the air temperature sensor on the air flow meter is above the upper limit.
246	P1107	The time interval measured by the air temperature sensor on the air flow meter is below the lower limit.
247	P110A	System degradation 0
248	P110B	Level-1 degradation
249	P110C	Level-2 degradation
250	P110D	Level-3 degradation
251	P110E	Vehicle performance limit function is activated.
252	P1110	The detected signal within physical range is relatively high.
253	P1111	The engine coolant temperature signal level is relatively low.
254	P1120	The correction of air flow sensor load exceeds the maximum deviation limit.
255	P1121	The physical value of air flow meter is above the upper limit.
256	P1122	The physical value of air flow meter is below the lower limit.

S/N	DTC	Meaning
257	P1123	The signal level of intake air temperature sensor (integrated inside the air flow sensor) is relatively low.
258	P1130	The signal level of fuel temperature sensor is relatively low.
259	P1131	The signal of fuel temperature is unreliable.
260	P113A	The signal of too high oil temperature is unreliable.
261	P113B	The signal level of oil temperature sensor is relatively high.
262	P113C	The signal level of oil temperature sensor is relatively low.
263	P1200	Short circuit between the high end and low end of the 1st cylinder fuel injector
264	P1201	Short circuit between the high end and low end of the 2nd cylinder fuel injector
265	P1202	Short circuit between the high end and low end of the 3rd cylinder fuel injector
266	P1203	Short circuit between the high end and low end of the 4th cylinder fuel injector
267	P1204	Short circuit between the high end and low end of the 5th cylinder fuel injector
268	P1205	Short circuit between the high end and low end of the 6th cylinder fuel injector
269	P1207	1st cylinder special error
270	P1208	2nd cylinder special error
271	P1209	3rd cylinder special error
272	P120A	4th cylinder special error
273	P120B	5th cylinder special error
274	P120C	6th cylinder special error
275	P1210	An error is reported when the time for electrifying the 1st cylinder reaches to the minimum.
276	P1211	An error is reported when the time for electrifying the 2nd cylinder reaches to the minimum.
277	P1212	An error is reported when the time for electrifying the 3rd cylinder reaches to the minimum.
278	P1213	An error is reported when the time for electrifying the 4th cylinder reaches to the minimum.
279	P1214	An error is reported when the time for electrifying the 5th cylinder reaches to the minimum.
280	P1215	An error is reported when the time for electrifying the 6th cylinder reaches to the minimum.
281	P1216	Maximum deviation error in the inner control circuit of electronic throttle
282	P1217	Minimum deviation error in the inner control circuit of electronic throttle
283	P1218	Maximum deviation error in the outer control circuit of electronic throttle
284	P1219	Minimum deviation error in the outer control circuit of electronic throttle
285	P121A	1st cylinder IQA error
286	P121B	2nd cylinder IQA error

S/N	DTC	Meaning
287	P121C	3rd cylinder IQA error
288	P121D	4th cylinder IQA error
289	P121E	5th cylinder IQA error
290	P121F	6th cylinder IQA error
291	P1220	The signal level of intercooler downstream temperature sensor is relatively high.
292	P1221	The signal level of intercooler downstream temperature sensor is relatively low.
293	P122A	The positive deviation of throttle controller exceeds the upper limit for a long time.
294	P122B	The negative deviation of throttle controller is below the lower limit for a long time.
295	P1230	Error reported in monitoring the OBDII maximum threshold correction
296	P1231	Error reported in monitoring the OBDII minimum threshold correction
297	P1245	System degradation information
298	P1250	An error is triggered when the ET time of the 1st cylinder reaches the maximum limit (when the ZEL comes into effect).
299	P1251	An error is triggered when the ET time of the 2nd cylinder reaches the maximum limit (when the ZEL comes into effect).
300	P1252	An error is triggered when the ET time of the 3rd cylinder reaches the maximum limit (when the ZEL comes into effect).
301	P1253	An error is triggered when the ET time of the 4th cylinder reaches the maximum limit (when the ZEL comes into effect).
302	P1254	An error is triggered when the ET time of the 1st cylinder reaches the minimum limit (when the ZEL comes into effect).
303	P1255	An error is triggered when the ET time of the 2nd cylinder reaches the minimum limit (when the ZEL comes into effect).
304	P1256	An error is triggered when the ET time of the 3rd cylinder reaches the minimum limit (when the ZEL comes into effect).
305	P1257	An error is triggered when the ET time of the 4th cylinder reaches the minimum limit (when the ZEL comes into effect).
306	P1400	EGR valve circuit is open.
307	P1401	Overtemperature of EGR valve bridge-H chip
308	P1402	EGR valve circuit is short to power supply.
309	P1403	EGR valve circuit is short to ground.
310	P140A	The signal level of the EGR cooler downstream temperature is relatively high.
311	P140B	The signal level of the EGR cooler downstream temperature is relatively low.
312	P1410	The positive deviation of throttle controller exceeds the upper limit for a long time.
313	P1411	The negative deviation of throttle controller is below the lower limit for a long time.
314	P1415	The time for transforming from RGN to NRM mode is too long.
315	P1418	The indicator actuator circuit for EGR bypass regulating valve is open.

S/N	DTC	Meaning
316	P1419	Overheating of indicator actuator for EGR bypass regulating valve
317	P141A	The indicator actuator circuit for EGR bypass regulating valve is short to battery.
318	P141B	The indicator actuator circuit for EGR bypass regulating valve is short to ground.
319	P141C	The relay actuator circuit for EGR bypass regulating valve is open.
320	P141D	Overheating of relay actuator for EGR bypass regulating valve
321	P141E	The relay actuator circuit for EGR bypass regulating valve is short to battery.
322	P141F	The relay actuator circuit for EGR bypass regulating valve is short to ground.
323	P1420	The maximum exhaust temperature signal of the 1st cylinder is too strong.
324	P1421	The maximum exhaust temperature signal of the 2nd cylinder is too strong.
325	P1422	The maximum exhaust temperature signal of the 3rd cylinder is too strong.
326	P1423	The maximum exhaust temperature signal of the 4th cylinder is too strong.
327	P1424	The maximum exhaust temperature signal of the 5th cylinder is too strong.
328	P1425	The maximum exhaust temperature signal of the 6th cylinder is too strong.
329	P1426	The minimum exhaust temperature signal of the 1st cylinder is too strong.
330	P1427	The minimum exhaust temperature signal of the 2nd cylinder is too strong.
331	P1428	The minimum exhaust temperature signal of the 3rd cylinder is too strong.
332	P1429	The minimum exhaust temperature signal of the 4th cylinder is too strong.
333	P142A	The minimum exhaust temperature signal of the 5th cylinder is too strong.
334	P142B	The minimum exhaust temperature signal of the 6th cylinder is too strong.
335	P1430	The exhaust temperature T0 in cold start is unreliable.
336	P1431	The exhaust temperature T1 in cold start is unreliable.
337	P1432	The exhaust temperature T2 in cold start is unreliable.
338	P1433	The exhaust temperature T3 in cold start is unreliable.
339	P1434	The exhaust temperature T4 in cold start is unreliable.
340	P1435	The exhaust temperature T5 in cold start is unreliable.
341	P1436	The exhaust temperature signal is unreliable.
342	P1437	Unreliable monitoring of the 1st cylinder exhaust temperature
343	P1438	Unreliable monitoring of the 2nd cylinder exhaust temperature
344	P1439	Unreliable monitoring of the 3rd cylinder exhaust temperature
345	P143A	Unreliable monitoring of the 4th cylinder exhaust temperature
346	P143B	Unreliable monitoring of the 5th cylinder exhaust temperature
347	P143C	Unreliable monitoring of the 6th cylinder exhaust temperature
348	P1440	Negative deviation error of oxygen sensor regulator
349	P1441	Positive deviation error of oxygen sensor regulator

S/N	DTC	Meaning
350	P1442	Conversion failure of oxygen sensor regulator
351	P1450	The particulate filter upstream temperature is unreliable.
352	P1451	The signal level of particulate filter upstream temperature is relatively high.
353	P1452	The signal level of particulate filter upstream temperature is relatively low.
354	P1453	The signal level of particulate filter upstream temperature sensor is relatively high.
355	P1454	The signal level of particulate filter upstream temperature sensor is relatively low.
356	P1455	Connection failure of particulate filter differential pressure sensor hose
357	P1456	The particulate filter differential pressure sensor is unreliable.
358	P1457	Maximum characteristic differential pressure of particulate filter
359	P1458	Minimum characteristic differential pressure of particulate filter
360	P1459	Minimum deviation of particulate filter
361	P145A	The signal level of particulate filter flow impedance is high.
362	P145B	Maximum deviation of particulate filter smoke mass
363	P145C	Minimum deviation of particulate filter smoke mass
364	P145D	Maximum value of particulate filter smoke mass
365	P145E	The signal level of particulate filter flow impedance is relatively high.
366	P145F	The signal level of particulate filter flow impedance is relatively low.
367	P1460	The maximum differential pressure signal of particulate filter is enhanced.
368	P1461	The minimum differential pressure signal of particulate filter is enhanced.
369	P1462	The dynamic differential pressure of particulate filter is unreliable.
370	P1463	The differential pressure self-adaption of particulate filter hose is unreliable.
371	P1464	Particulate filter differential pressure error
372	P146A	The physical value of differential pressure sensor for particulate oxidation catalyst exceeds the upper limit.
373	P146B	The physical value of differential pressure sensor for particulate oxidation catalyst falls below the lower limit.
374	P146C	CAN Signal error
375	P146D	CAN Signal error
376	P1470	Nernst signal error of oxygen sensor
377	P1471	The oxygen sensor is virtually grounded.
378	P1472	The dynamic signal level of oxygen sensor is relatively low.
379	P1473	Oxygen sensor heater coupling signal fault
380	P1474	The oxygen sensor heater signal is unreliable.
381	P1475	The oxygen sensor battery voltage is relatively low.
382	P1476	The calibration signal level of oxygen sensor is relatively high.

S/N	DTC	Meaning
383	P1477	The calibration signal level of oxygen sensor is relatively low.
384	P1478	The oxygen concentration of oxygen sensor exceeds the maximum threshold.
385	P1479	The oxygen concentration of oxygen sensor exceeds the minimum threshold.
386	P147A	Relatively high oxygen concentration is unreliable.
387	P147B	Relatively high oxygen concentration is unreliable.
388	P147C	Relatively high oxygen concentration is unreliable.
389	P147D	Relatively low oxygen concentration is unreliable.
390	P147E	Relatively low oxygen concentration is unreliable.
391	P147F	Relatively low oxygen concentration is unreliable.
392	P1480	The calibration value of oxygen sensor internal impedance is too high.
393	P1481	The calibration value of oxygen sensor internal impedance is too low.
394	P1482	The SPI battery voltage of oxygen sensor is too low.
395	P1483	The SPI signal of oxygen sensor is unreliable.
396	P1484	The oxygen sensor temperature is above the upper limit.
397	P1485	The oxygen sensor temperature is below the lower limit.
398	P1486	The oxygen sensor voltage in shunting exceeds the threshold.
399	P148A	The signal level of turbocharger upstream temperature sensor is relatively high.
400	P148B	The signal level of turbocharger upstream temperature sensor is relatively low.
401	P1500	The voltage signal level of vehicle speed sensor is relatively high.
402	P1501	The voltage signal level of vehicle speed sensor is relatively low.
403	P150A	Power supply diagnosis is disabled in electrifying phase due to overvoltage of battery.
404	P150B	Power supply diagnosis is disabled in electrifying phase due to under-voltage of battery.
405	P1510	The signal level measured by A/C coolant pressure sensor is too low.
406	P1511	The signal level measured by A/C coolant pressure sensor is too low.
407	P1512	The signal level measured by A/C coolant pressure sensor is too high.
408	P1513	The signal level measured by A/C coolant pressure sensor is too high.
409	P1514	Overtemperature of compressor torque reduction command circuit in electrifying phase
410	P1515	A/C switch CAN input signal is unreliable.
411	P1516	The compressor torque reduction command circuit in electrifying phase is short to ground.
412	P1517	The compressor torque reduction command circuit in electrifying phase is short to power.
413	P1520	Short circuit of turbocharger bridge-H

S/N	DTC	Meaning
414	P1521	Under-voltage of turbocharger bridge-H
415	P1522	Overcurrent of turbocharger bridge-H
416	P1523	Overtemperature of turbocharger bridge-H
417	P1524	Overcurrent of turbocharger bridge-H temperature sensor
418	P1525	The valve is stuck in deviation learning process.
419	P1526	Output circuit 1 of turbocharger bridge-H is short to ground.
420	P1527	Output circuit 1 of turbocharger bridge-H is short to ground.
421	P1528	Output circuit 1 of turbocharger bridge-H is short to battery.
422	P1529	Output circuit 2 of turbocharger bridge-H is short to battery.
423	P1601	EGR valve circuit is open.
424	P1602	Too high downstream temperature of coolant temperature sensor is unreliable.
425	P1603	EGR valve circuit is short to power supply.
426	P1604	EGR valve circuit is short to ground.
427	P1608	EGR valve circuit is short to power supply.
428	P1609	EGR valve circuit is short to ground.
429	P160A	EGR valve circuit is open.
430	P160B	Overtemperature of EGR valve bridge-H chip
431	P160C	Overcurrent of turbocharger bridge-H temperature sensor
432	P1610	Execute closing fuel injection under standard ICO mode.
433	P1613	The electrifying time detected by galloping prevention monitor is too long.
434	P1614	Several faults occur during SPI communication.
435	P1615	Time-out when trying to set up or cancel alarm task
436	P1617	Error reported in monitoring under-voltage
437	P1618	WDA works abnormally.
438	P1619	EGR valve circuit is short to power supply.
439	P161A	EGR valve circuit is short to ground.
440	P161B	EGR valve circuit is open.
441	P161C	EGR valve circuit is open.
442	P161D	Failure in software reset visibility
443	P161E	Failure in software reset visibility
444	P161F	Failure in software reset visibility
445	P1620	TTLAMP drive circuit is open.
446	P1621	The drive circuit for fuel consumption display is short to power supply.
447	P1622	The drive circuit for fuel consumption display is short to ground.

S/N	DTC	Meaning
448	P1623	The drive circuit for fuel consumption display is open.
449	P1624	Overtemperature of the drive circuit for fuel consumption display
450	P1625	TTLAMP drive circuit is short to power supply.
451	P1626	TTLAMP drive circuit is short to ground.
452	P1627	Overheating of TTLAMP drive circuit
453	P1633	The signal level of ECU temperature sensor is relatively high.
454	P1634	The signal level of ECU temperature sensor is relatively high.
455	P1635	The signal level of ECU temperature sensor is relatively low.
456	P1636	The signal level of ECU temperature sensor is relatively low.
457	P1637	The power supply voltage is too high.
458	P1638	The power supply voltage is too low.
459	P1639	The physical value of ECU temperature sensor exceeds the upper limit.
460	P163A	The physical value of ECU temperature sensor falls below the lower limit.
461	P163B	ECU temperature sensor SPI fault (LM71)
462	P1640	Compressor overtemperature in electrifying phase
463	P1643	Signal safety checkout error
464	P1645	The injection frequency is limited by the boosting electric quantity charging balance.
465	P1646	The injection frequency is limited by the high pressure fuel pump fuel quantity balance.
466	P1647	The injection frequency is limited by the runtime.
467	P164C	EGR valve circuit is open.
468	P164D	EGR valve circuit is short to power supply.
469	P164E	EGR valve circuit is short to ground.
470	P1650	EEP Clear Error
471	P1651	EEP Clear Error
472	P1652	An error is reported when the module’s data-writing is disabled for three times.
473	P165A	Null dataset identifier
474	P165B	Dataset switchover fault
475	P165C	EEPROM data-reading error
476	P1660	ADC open circuit pulse test fault
477	P1662	The voltage being transformed by ADC module exceeds the set range of test voltage.
478	P1663	The radiometry correction exceeds the set range.
479	P1664	Monitoring control communication fault
480	P1665	SPI Monitoring control communication fault

S/N	DTC	Meaning
481	P1666	Several faults occur when testing the whole ROM zone.
482	P1667	The number of responsive bytes obtained from CPU in monitoring mode is too small / Error of the set response time of monitoring mode
483	P1668	Error of the set response time of monitoring mode
484	P166A	OFF-route test time-out
485	P166B	The electrifying time for injection is unreliable.
486	P166C	The initial electrifying angle (SO E) is unreliable.
487	P166D	ZFC is unreliable.
488	P166E	Fuel injection monitoring mode 1
489	P166F	Fuel injection monitoring mode 2
490	P1670	Error reported in fuel injection correction
491	P1671	Unreliable rail pressure
492	P1672	The torque limit is set once any error is detected before the MoCSOP’s error is generated.
493	P1673	Monitoring OFF-route forward test fault
494	P1674	Monitoring fault mode 3
495	P1675	The negative deviation of throttle controller is below the lower limit for a long time.
496	P1676	Open circuit of EGR valve bridge-H
497	P1677	Overload of EGR valve bridge-H
498	P1678	Overtemperature of EGR valve bridge-H chip
499	P167B	CY33X fault
500	P167C	The set value of rail pressure is limited by the torque limit of the function control unit.
501	P1680	The cruise indicator drive circuit is open.
502	P1681	Overtemperature of cruise indicator drive circuit
503	P1682	The cruise indicator drive circuit is short to power supply or high level.
504	P1683	The cruise indicator drive circuit is short to ground.
505	P1684	The grill heater is always ON.
506	P1685	DFC mechanical fault when turning on ignition switch
507	P1686	Fuel filter heating power level temperature fault
508	P1687	CJ945 Power level no load fault
509	P1688	CJ945 Power level no load fault
510	P1689	Overheating of intake air heater drive circuit
511	P168A	CJ945 Overheating fault
512	P168B	CJ945 Power level is short to battery.

S/N	DTC	Meaning
513	P168C	CJ945 Power level is short to battery.
514	P168D	CJ945 Power level is short to ground.
515	P168E	CJ945 Power level is short to ground.
516	P1700	Unreliable clutch signal / Clutch signal error
517	P1710	Overheating of engine speed sensor
518	P1720	Transmission neutral position signal
519	P2002	The particulate oxidation catalyst device is removed.
520	P2004	Overcurrent of EGR valve bridge-H based on temperature
521	P2008	EGR valve circuit is open.
522	P2009	EGR valve circuit is short to ground.
523	P2010	EGR valve circuit is short to power supply.
524	P2014	Under-voltage of EGR valve bridge-H
525	P2015	The turbocharger control valve is stuck.
526	P2072	The throttle valve is frozen.
527	P2076	An error is reported when the EGR valve is stuck in closing or opening.
528	P2077	The signal level of swirl valve position sensor is relatively low.
529	P2078	The signal level measured by the variable swirl valve position sensor is above the limit.
530	P207A	Overtemperature of EGR valve bridge-H chip
531	P207B	The short-term jitter of EGR valve exceeds the limit.
532	P2100	Open circuit of throttle bridge-H
533	P2101	Overcurrent of throttle bridge-H
534	P2102	Output circuit 1 of throttle bridge-H is short to ground.
535	P2103	Output circuit 1 of throttle bridge-H is short to battery.
536	P2135	Signals of accelerator pedal position sensor 1 and 2 are unreliable.
537	P213A	Open circuit of EGR valve bridge-H
538	P213B	Overload of EGR valve bridge-H
539	P213C	The Port 2 of EGR valve bridge-H chip is short to ground.
540	P213D	The Port 2 of EGR valve bridge-H chip is short to ground.
541	P2141	The Port 1 of EGR valve bridge-H chip is short to ground.
542	P2142	The Port 1 of EGR valve bridge-H chip is short to power supply.
543	P2146	Short circuit
544	P2149	Short circuit
545	P2157	Unreliable vehicle speed signal

S/N	DTC	Meaning
546	P2173	False positive deviation of throttle regulator
547	P2175	False negative deviation of throttle regulator
548	P2226	Fault of signal obtained from CAN by air pressure sensor
549	P2228	The signal value of ambient pressure is below the lower limit.
550	P2229	The signal value of ambient pressure is above the upper limit.
551	P2264	EGR valve circuit is open.
552	P2265	An error is reported when the moisture content in fuel is detected.
553	P2266	EGR valve circuit is short to ground.
554	P2267	EGR valve circuit is short to power supply.
555	P2268	EGR valve circuit is open.
556	P2269	The sensor self-checking signal level is above the upper limit.
557	P2290	The rail pressure is below the minimum set value.
558	P242F	The particulate filter smoke load exceeds the maximum.
559	P2454	The signal level of particulate filter differential pressure sensor is relatively low.
560	P2455	The signal level of particulate filter differential pressure sensor is relatively high.
561	P2458	Particulate filter regeneration permanent fault
562	P245A	EGR cooler bypass valve fault
563	P245B	Too low EGR cooling efficiency
564	P245D	The signal level of EGR cooler sensor is relatively high.
565	P250F	Danger is caused by too low fuel level and air ingress into hydraulic system.
566	P2519	A/C switch CAN input signal error
567	P2522	The compressor torque reduction command circuit in electrifying phase is open.
568	P2562	The turbocharger bridge-H chip circuit is open.
569	P2563	The turbocharger control valve is stuck.
570	P2564	The original voltage of EGR valve sensor signal is below the lower limit.
571	P2565	The original voltage of EGR valve sensor signal is above the upper limit.
572	P2621	The throttle signal level is relatively low.
573	P2622	The throttle signal level is relatively high.
574	P2626	The oxygen sensor pump current terminal IP is in open circuit.
575	B0020	Airbag collision status
576	U0121	ABS ECU main data loss
577	U0400	CAN received frame BCM1 message length error
578	U0415	CAN received frame ABS1 message length error