Isuzu NPR & NQR (Elf) Truck Fault Codes DTC – Flash codes – Type of DTC – Description of DTC – Engine, Euro 4 compliant – Except Euro 4 compliant engines
P0016 16 A A Inconsistency in the reading of crankshaft and camshaft position sensors
P0045 33 A – Malfunction in a chain of the solenoid valve of regulation of pressure of pressurization
P0079 38 A – Low signal level in the solenoid valve control circuit of the exhaust flap
P0080 38 A – High signal level in the solenoid valve control circuit of the exhaust flap
P0087 225 A A Low pressure in the fuel rail / fuel supply system
P0088 118 D A High pressure in the fuel rail / fuel supply system (first stage)
P0088 118 A A High pressure in the fuel rail / fuel supply system (second stage)
P0089 151 A A Malfunction of the fuel pressure regulator
P0091 247 A A Low signal in the fuel pressure regulator circuit
P0092 247 A A High signal in the fuel pressure regulator circuit
P0093 227 A A Leak in the fuel supply system
P0101 92 B – Invalid signal or malfunction in the mass air flow sensor circuit
P0102 91 A – Low signal at the input of the mass air flow sensor
P0103 91 A – High level signal at the input of the mass air flow sensor
P0107 32 A A Low signal at the input of the absolute pressure sensor located in the intake manifold
P0108 32 A A High signal at the input of the absolute pressure sensor located in the intake manifold
P0112 22 A A Low signal in the intake air temperature sensor circuit
P0113 22 A A High signal in the intake air temperature sensor circuit
P0116 23 B – Incorrect signal or malfunction in the temperature sensor circuit liquids
P0117 23 A A Low signal in the coolant temperature sensor circuit
P0118 23 A A High signal in the coolant temperature sensor circuit
P0122 43 A – Low signal in the throttle position sensor circuit
P0123 43 A – High signal in the throttle position sensor circuit
P0182 211 A A Low signal in the fuel temperature sensor circuit
P0183 211 A A High signal in the fuel temperature sensor circuit
P0192 245 A A Low signal in the fuel pressure sensor circuit
P0193 245 A A High signal in the fuel pressure sensor circuit
P0201 271 A A Open in the injector circuit of the first cylinder
P0202 272 A A Open in the injector circuit of the second cylinder
P0203 273 A A Open in the injector circuit of the third cylinder
P0204 274 A A Open in the injector circuit of the fourth cylinder
P0217 542 D D Excessive coolant temperature
P0219 543 D A Overspeed
P0234 42 A A boost pressure
P0299 65 B A Insufficient boost pressure
P0335 15 A A Malfunction in a chain of the gauge of position of a cranked shaft
P0336 15 A A Incorrect signal or malfunction in a chain of the gauge of position of a cranked shaft
P0340 14 A A Malfunction in a chain of the camshaft sensor
P0341 14 A A Invalid signal or malfunction in the camshaft position sensor circuit
P0380 66 C A Malfunction in a chain of glow plugs
P0381 67 C A Malfunction in a chain of a control lamp of system of prestarting heating
P0401 93 A – Not enough recirculated gas
P0404 45 A A Incorrect signal or malfunction in the EGR control circuit
P0409 44 A A Malfunction in a chain of the gauge of position of the valve EGR
P0426 143 C – Wrong signal or malfunction in the exhaust gas temperature sensor sensor circuit # 1
P0427 48 A – Low signal in the exhaust gas temperature sensor sensor circuit # 1
P0428 48 A – High signal in the exhaust gas temperature sensor sensor circuit # 1
P042B 145 C – Incorrect signal or malfunction in the exhaust gas temperature sensor sensor circuit 2
P042C 49 C – Low signal in the exhaust gas temperature sensor sensor circuit 2
P042D 49 C – High signal in the exhaust gas temperature sensor sensor circuit 2
P0477 46 – A Low signal in the exhaust flap control circuit
P0478 46 – A High signal in the exhaust gas pressure control valve circuit
P0500 25 B A Speed sensor malfunction
P0502 25 A A Low level input of the speed sensor
P0503 25 A A High signal at the input of the vehicle speed sensor
P0560 155 A – Incorrect voltage in the electrical system
P0563 35 C A High voltage on-board
P0601 53 A A Checksum error of the internal RAM of the control unit
P0602 154 C A Control unit programming error
P0604 153 A A Error in the internal RAM of the control unit
P0606 51 A A ECM processor failure
P060B 36 A A Malfunction in a circuit of the internal analog-to-digital converter of the block management
P0633 176 C A Immobilizer not programmed
P0638 61 B A Invalid signal or malfunction in the control circuit of the throttle actuator flaps
P0641 55 A A Malfunction in the reference voltage circuit of sensor No. 1
P0650 77 A D Malfunction in a control circuit of a control lamp “Check engine”
P0651 56 A A Malfunction in the reference voltage circuit of sensor No. 2
P0685 416 C A Open in the control circuit of the power relay ECM
P0687 416 C A High signal in the ECM power relay control circuit
P0697 57 A A Malfunction in the reference voltage circuit of sensor No. 3
P1093 227 A A Insufficient fuel pressure
P1261 34 A A Positive voltage of the injector control circuits of group No. 1
P1262 34 A A Positive voltage of the injector control circuits of group No. 2
P1404 45 A – Incorrect EGR valve position (closed position error)
P1404 45 A A EGR valve position incorrect (stored position error)
P1455 132 A – Excessive particulate matter in the particulate filter
P1471 149 A – Insufficient particulate filter regeneration
P161B 179 C A Invalid immobilizer response
P1621 54 A A ROM fault in the control unit
P1664 76 C – Service Indicator Control Circuit
P1669 75 C – Diesel particulate filter warning lamp control circuit
P2122 121 B A Low signal at the input of the accelerator pedal position sensor No. 1
P2123 121 B A High signal at the input of the accelerator pedal position sensor No. 1
P2127 122 B A Low signal at input of accelerator pedal position sensor No. 2
P2128 122 B A High signal at input of accelerator pedal position sensor No. 2
P2138 124 B A Mismatch between accelerator pedal position sensors No. 1 and No. 2
P2146 158 A A Voltage supply circuit for injectors of group No. 1
P2149 159 A A Voltage supply circuit for injectors of group No. 2
P2227 71 B – Incorrect signal or malfunction in the atmospheric pressure sensor circuit
P2228 71 A A Low signal in the atmospheric pressure sensor circuit
P2229 71 A A High signal in the atmospheric pressure sensor circuit
P242F 131 A – Particle filter clogging
P2452 142 A – Fault in the differential pressure gauge circuit
P2453 141 A – Incorrect signal or malfunction in the differential pressure gauge circuit
P2454 47 A – Low signal in the differential pressure gauge circuit
P2455 47 A – High signal in the differential pressure gauge circuit
P2456 47 A – Incorrect initialization of differential pressure gauge
P2458 139 A – Excessive regeneration of differential pressure gauge
P253A 28 C A Malfunction in a chain of the sensor of the mechanism of selection of power
P256A 31 C A Malfunction in a chain of the regulator of turns of idling
U0073 84 B A Shutdown of control unit data bus
U0101 85 C A Open connection to gearbox control unit (TCM)
U0110 87 A A Open connection to variable geometry turbocharger control unit (VNT)
U0167 177 C A Open connection to immobilizer control unit
