DAF LF45 LF55 CF65 CF75 CF85 XF95 Trucks Fault Codes DTC
0-0
Internal communications failure in the electronic control unit (D901) as a result of the electronic control unit malfunction
– Cabin heater does not start or work intermittently
0-1
Internal communications failure in the electronic control unit (D901) as a result of the electronic control unit malfunction
– Cabin heater does not start or work intermittently
1-0
Malfunction when starting ACH-EW, no flame is detected during startup. Flame sensor value remains below 80 ° C, the voltage across the terminals 10 and 12 of the connector 18 from the bottom of the electronic
is below the 2.23:
– The absence or lack of fuel supply
– Insufficient air supply
– Clogged exhaust
– Pollution or damage to the igniter
– Too high or too low voltage spark
– Cabin heater does not start. After two unsuccessful launches cabin heater is turned off and generates fault code.
1-4
Too many starts without flame detection:
– The absence or lack of fuel supply
– Insufficient air supply
– Clogged exhaust
– Pollution or damage to the igniter
– Too high or too low voltage spark
– Cabin heater is switched off after 10 unsuccessful runs (runs 20 attempts) and the electronic control unit is blocked
2-0
The flame goes out frequently during the operation:
– The absence or lack of fuel supply
– Insufficient air supply
– Low or high voltage
– Excessively high flame temperature sensor
– Excessive temperature overheating sensor
– Faulty combustion device
– Pollution or damage to the igniter
– Clogged or dirty exhaust
– Cabin heater does not work, or smokes, highlighting the lack of heat
3-1
Too high voltage (above 30 V for 20 seconds) on the A5 and the electronic control unit Ab findings (D901) due to excessive alternator / battery voltage
batteries
– Disruptions in the cab heater
3-2
Too low voltage (below 20 V for 20 seconds) and A5 ECU findings Ab (D901) due to insufficient power supply, for example during engine start
– Disruptions in the cab heater
4-0
Alarm when the flame. Flame sensor value above 80 ° C, despite the four-minute cold air ventilation; the voltage across the terminals 10 and 12 of the 18-pin connector below the electronic control unit above 2.23 due to the flame sensor failure.
– Cabin heater does not start
5-1
Flame sensor short circuit at the terminals 10 and 12 of the 18-pin connector below the electronic control unit
– Cabin heater does not start or work intermittently
5-2
Break the flame detector circuit at the terminals 10 and 12 of the 18-pin connector below the electronic control unit
– Cabin heater does not start or work intermittently
6-1
Short in coolant temperature sensor
on the conclusions of 9 and 11 of the 18-pin connector below the electronic control unit
– Cabin heater does not start or work intermittently
6-2
Open circuit coolant temperature sensor on the findings
9 and 11 of the pin 18 from below the electronic control unit
– Cabin heater does not start or work intermittently
7-1
Short circuit in the fuel pump module from the level sensor (B122) at the terminals A1 and A2 of the electronic control unit
– Cabin heater does not start or work intermittently
7-2
Open circuit in the fuel pump module from the level sensor (B 122) on the conclusions of the A1 and A2 of the electronic control unit
– Cabin heater does not start or work intermittently
8-3
Deviation device combustion speed:
– Malfunction of the combustion device
– Malfunction of the electronic unit (D901)
– Heater cab during operation fails with a delay of 60 seconds
9-1
Short filament at terminals 3 and 4 of the 18-pin connector below the electronic control unit
– Cabin heater does not start
9-2
Open circuit at the terminals of the filament 3 and 4 of the 18-pin connector below the electronic control unit
– Cabin heater does not start
10-0
Too rapid growth of the coolant temperature:
– Bad liquid stream
– Lack of coolant
– Use Intarder
– Cabin heater fails during operation
10-4
Activated safety function ACH-EW as a result of too much overheating
– Cabin heater is not working. The electronic control unit is locked after three unsuccessful launches
11-1
Short circuit in the pump circulation of the coolant at the terminals 6 and 7 of the 18-pin connector below the electronic control unit
– Cabin heater does not start or work intermittently
11-2
Open circuit pump circulating coolant on the findings
6 and 7, pin 18 from below the electronic control unit
– Cabin heater does not start or work intermittently
13-1
Short circuit Overheating sensor conclusions 5 and 8 of the 18-pin connector below the electronic control unit
– Cabin heater does not start or work intermittently
13-2
Break overheating sensor circuit at the terminals 5 and 8 18-pin connector below the electronic control unit
– Cabin heater does not start or work intermittently
13-3
Too much difference between the values of overheating sensor and coolant temperature sensor:
– Bad liquid stream
– Lack of coolant
– Use Intarder
– Cabin heater does not start or work intermittently
15-1
Short circuit in the wiring “enable signal ACHEW» at terminal A9 ALS-S electronic control unit (D911)
– No signal detection system in the cabin (ALS-S)
DAF LF, CF, XF Fault Codes DTC D3LC (ACH-EA)
0-0
Internal faults in the electronic control unit (D871):
– Malfunction of the electronic control unit (D871)
– Insufficient battery voltage
– Cabin heater does not start or fails during operation
0-1
Internal faults in the electronic control unit (D871):
– Malfunction of the internal temperature sensor in the electronic control unit (D871)
– Cabin heater does not start or fails during operation
1-0
Failed to start ACH-EA, the flame is detected during start-up:
– The absence or lack of fuel supply
– Insufficient air supply
– Clogged exhaust
– Malfunction of the flame sensor (F626)
– Damage to the filament (B 168)
– Cabin heater does not start. After two unsuccessful launches
cabin heater is switched off and a fault code is generated
2-0
In the process, the flame goes out frequently:
– The absence or lack of fuel supply
– Insufficient air supply
– Clogged exhaust
– Malfunction of the flame sensor (F626)
– Cabin heater does not work, or smokes, highlighting the lack of heat
3-1
Too high voltage (above 30 V for 20 seconds) at terminal A5 electronic control unit (D871):
– Excessive generator voltage / battery
– Cabin heater fails during operation
3-2
Too low voltage (below 20 V for 20 seconds) at terminal A5 electronic control unit (D871):
– Insufficient generator voltage and / Battery
– Open circuit at pin A5 electronic control unit (D871)
– Cabin heater does not start
4-0
fire alarm at startup:
– Malfunction of the flame sensor (F626)
– Malfunction of the electronic control unit (D871)
– Cabin heater does not start
5-1
Short-circuit to ground or the supply to the conclusions of the FW1 and FW2 electronic control unit (D871), a flame sensor (F626)
– Cabin heater does not start or fails during operation
5-2
Open on the findings and FW1 / FW2 or electronic control unit (D871), a flame sensor (F626)
– Cabin heater does not start or fails during operation
6-1
Short-circuit to ground or to the power supply at the terminals A8 and A13 Electronic Control Unit (D871), a temperature sensor (F509)
– Cabin heater does not start or fails during operation
6-2
Open on the findings and A8 / A13 or the electronic control unit (D871), a temperature sensor (F509)
– Cabin heater does not start or fails during operation
7-1
Short-circuit to ground or the supply to the A ll findings and / or electronic control unit AZ (D871), a fuel pump with a level sensor (B 122)
Internal fault in the fuel pump with a level sensor (B 122)
– Cabin heater does not starts
7-2
Open at the terminals 4 and / or 9 of the electronic control unit (D871), a fuel pump with a level sensor (B 122)
Internal fault in the fuel pump with a level sensor (B 122)
– Cabin heater does not start
8-1
Short-circuit to ground or to the power supply at the terminals BM1 and BM2 electronic control unit (D871), a fan (V305)
Internal fault in the fan cabin heater (V305)
– Cabin heater does not start
8-2
Open on pin BM1 and / or electronic control unit BM2, The fan (V305)
Internal fault in the fan cabin heater (V305)
– Cabin heater does not start
8-3
Deviation of the cab heater fan speed (V305):
– Fan Lock (V305)
– No solenoid electric motor
– Malfunction of the electronic control unit (D871)
– Cabin heater fails during operation
9-1
Short-circuit to ground or the supply to the A9 findings and / or AN electronic control unit (D871), a filament (B 168)
– Cabin heater does not start
9-2
Open on pin A9 and / or A ll of the electronic control unit (D871), a filament (V168)
– Cabin heater does not start
10-0
Cab heater overheats too often:
– Clogging of pipes of hot air
– Faulty overheat sensor (F627)
– Insufficient air supply
– Cabin heater fails during operation
10-4
Activated safety function ACH-EA as a result of too frequent overheating
– The electronic control unit is blocked
12-1
Short-circuit to ground or to the power supply at the terminals of the A8, A13, A7 and / or A14 Electronic Control Unit (D871), a thermostat unit (E566)
Internal fault in the thermostat block (E566) or timer unit (E581)
– Cabin heater does not start
– Cabin heater does not turn on or off when the desired temperature
12-2
Open at the terminals 10 and / or 11 of the electronic control unit, the unit
Thermostat (E566)
Internal fault in the thermostat block (E566) or timer unit (E581)
– Cabin heater does not start
– Cabin heater does not turn on or off when the desired temperature
13-1
Short-circuit to ground or the supply to the UF1 UF2 findings and the electronic control unit, overheating sensor (F627)
– Cabin heater does not start or fails during operation
13-2
Open to UF1 findings and / or UF2 electronic control unit, overheating sensor (F627)
– Cabin heater does not start or fails during operation
