DAF 95XF. Manual — part 165
![](/vehicles/unay/milerdeju/uss/menda.png)
©
200438
1-13
UPEC fault codes
UPEC
DAVIE XD diagnostics manual
2
56-13
Irregular engine running detected by the ECU due
to:
-
fuel leak of injector pipes of cylinders 1, 3
and 6
-
defective/clogged injectors of cylinders 1, 3
and 6
-
air in fuel system
-
internal leakage of pump units of cylinders 1,
3 and 6
-
clogged injector pipes of cylinders 1, 3 and 6
-
too low a combustion pressure in cylinders
1, 3 and 6 caused by a mechanical defect of
the engine (valve seal etc.)
-
Irregular engine running and reduced
engine power
56-14
Irregular engine running detected by the ECU due
to:
-
fuel leak of injector pipes of cylinders 3, 5
and 6
-
defective/clogged injectors of cylinders 3, 5
and 6
-
air in fuel system
-
internal leakage of pump units of cylinders 3,
5 and 6
-
clogged injector pipes of cylinders 3, 5 and 6
-
too low a combustion pressure in cylinders
3, 5 and 6 caused by a mechanical defect of
the engine (valve seal etc.)
-
Irregular engine running and reduced
engine power
56-15
Irregular engine running detected by the ECU due
to:
-
fuel leak of injector pipes of cylinders 1, 3, 5
and 6
-
defective/clogged injectors of cylinders 1, 3,
5 and 6
-
air in fuel system
-
internal leakage of pump units of cylinders 1,
3, 5 and 6
-
clogged injector pipes of cylinders 1, 3, 5
and 6
-
too low a combustion pressure in cylinders
1, 3, 5 and 6 caused by a mechanical defect
of the engine (valve seal etc.)
-
Irregular engine running and reduced
engine power
57-1
Irregular engine running detected by the ECU due
to:
-
fuel leak of injector pipe of cylinder 2
-
defective/clogged injector of cylinder 2
-
air in fuel system
-
internal leakage of pump unit of cylinder 2
-
clogged injector pipe of cylinder 2
-
too low a combustion pressure in cylinder 2
caused by a mechanical defect of the engine
(valve seal etc.)
-
Irregular engine running and reduced
engine power
Fault code
Fault code description with possible cause
Symptom
![](/vehicles/unay/milerdeju/uss/uad.png)
UPEC
1-14
©
200438
UPEC fault codes
2
DAVIE XD diagnostics manual
57-2
Irregular engine running detected by the ECU due
to:
-
fuel leak of injector pipe of cylinder 4
-
defective/clogged injector of cylinder 4
-
air in fuel system
-
internal leakage of pump unit of cylinder 4
-
clogged injector pipe of cylinder 4
-
too low a combustion pressure in cylinder 4
caused by a mechanical defect of the engine
(valve seal etc.)
-
Irregular engine running and reduced
engine power
57-3
Irregular engine running detected by the ECU due
to:
-
fuel leak of injector pipes of cylinders 2 and 4
-
defective/clogged injectors of cylinders 2
and 4
-
air in fuel system
-
internal leakage of pump units of cylinders 2
and 4
-
clogged injector pipes of cylinders 2 and 4
-
too low a combustion pressure in cylinders 2
and 4 caused by a mechanical defect of the
engine (valve seal etc.)
-
Irregular engine running and reduced
engine power
61-8
Internal CAN fault in ECU
-
System reaction depending on the missing V
CAN data
62-2
No CAN message received from ABS/EBS ECU
relating to the engine torque control due to:
-
communication problem with ABS/EBS ECU
-
No noticeable system limitation in UPEC
Communication problem via V-CAN on pin B11 or
pin B12 of the ECU due to:
-
interruption on pin B11 or B12 of the ECU
-
short circuit to supply on pin B11 or B12 of
the ECU
-
Rev counter gives no reading
-
Thermometer gives no reading
Communication problem via V-CAN on pin B12 of
the ECU due to:
-
short circuit to earth on pin B12 of the ECU
-
Rev counter gives no reading
63-2
No CAN message received from ABS/EBS ECU
relating to the engine braking function due to:
-
communication problem with ABS/EBS ECU
-
No noticeable system limitation in UPEC
Communication problem via V-CAN on pin B11 or
pin B12 of the ECU due to:
-
interruption on pin B11 or B12 of the ECU
-
short circuit to supply on pin B11 or B12 of
the ECU
-
Rev counter gives no reading
-
Thermometer gives no reading
Communication problem via V-CAN on pin B12 of
the ECU due to:
-
short circuit to earth on pin B12 of the ECU
-
Rev counter gives no reading
Fault code
Fault code description with possible cause
Symptom
![](/vehicles/unay/milerdeju/uss/eve.png)
©
200438
1-15
UPEC fault codes
UPEC
DAVIE XD diagnostics manual
2
65-2
No CAN message received from transmission
ECU due to:
-
communication problem with transmission
ECU
-
No noticeable system limitation in UPEC
Communication problem via V-CAN on pin B11 or
pin B12 of the ECU due to:
-
interruption on pin B11 or B12 of the ECU
-
short circuit to supply on pin B11 or B12 of
the ECU
-
Rev counter gives no reading
-
Thermometer gives no reading
Communication problem via V-CAN on pin B12 of
the ECU due to:
-
short circuit to earth on pin B12 of the ECU
-
Rev counter gives no reading
66-2
No CAN message received from transmission
ECU due to:
-
communication problem with transmission
ECU
-
No noticeable system limitation in UPEC
Communication problem via V-CAN on pin B11 or
pin B12 of the ECU due to:
-
interruption on pin B11 or B12 of the ECU
-
short circuit to supply on pin B11 or B12 of
the ECU
-
Rev counter gives no reading
-
Thermometer gives no reading
Communication problem via V-CAN on pin B12 of
the ECU due to:
-
short circuit to earth on pin B12 of the ECU
-
Rev counter gives no reading
67-2
No CAN message received from transmission
ECU due to:
-
communication problem with transmission
ECU
-
No noticeable system limitation in UPEC
Communication problem via V-CAN on pin B11 or
pin B12 of the ECU due to:
-
interruption on pin B11 or B12 of the ECU
-
short circuit to supply on pin B11 or B12 of
the ECU
-
Rev counter gives no reading
-
Thermometer gives no reading
Communication problem via V-CAN on pin B12 of
the ECU due to:
-
short circuit to earth on pin B12 of the ECU
-
Rev counter gives no reading
68-1
No CAN message received from transmission
ECU due to:
-
communication problem with transmission
ECU
-
No noticeable system limitation in UPEC
Communication problem via V-CAN on pin B11 or
pin B12 of the ECU due to:
-
interruption on pin B11 or B12 of the ECU
-
short circuit to supply on pin B11 or B12 of
the ECU
-
Rev counter gives no reading
-
Thermometer gives no reading
Communication problem via V-CAN on pin B12 of
the ECU due to:
-
short circuit to earth on pin B12 of the ECU
-
Rev counter gives no reading
Fault code
Fault code description with possible cause
Symptom
![](/vehicles/unay/milerdeju/uss/lat.png)
UPEC
1-16
©
200438
UPEC fault codes
2
DAVIE XD diagnostics manual
69-1
No communication with immobiliser when
switching on the ignition, or immobiliser code
does not correspond with UPEC code due to:
-
defective immobiliser
-
ignition key not adjusted to the immobiliser
-
immobiliser not matched to UPEC ECU
-
voltage on pin B15 but no voltage on pins B3
and B4 of the ECU
-
Engine starts but will not fire
Communication problem via V-CAN on pin B11
and/or pin B12 of the ECU due to:
-
interruption on pin B11 and/or pin B12 of the
ECU
-
short circuit to supply on pin B11 of the ECU
-
Engine starts but will not fire
-
Several systems will output error messages
in connection with the CAN communication
Communication problem via V-CAN on pin B12 of
the ECU due to:
-
short circuit to supply on pin B12 of the ECU
-
Several systems will output error messages
in connection with the CAN communication
71-1
Short circuit to supply of glow relay (G014) on pin
B10 of the ECU
-
Glow function cannot be activated
71-2
Short circuit to earth of glow relay (G014) on pin
B10 of the ECU
-
Glow function permanently activated
71-8
Interruption in glow relay (G014) on pin B10 of the
ECU
-
Glow function cannot be activated
73-1
Short circuit to supply of exhaust brake solenoid
valve (B192) on pin B9 of the ECU
-
Exhaust brake cannot be activated
73-2
Short circuit to earth of exhaust brake solenoid
valve (B192) on pin B9 of the ECU
-
Exhaust brake permanently activated
No supply voltage on glow relay, exhaust brake
and DEB due to faulty fuse
-
Glow function cannot be activated
-
Exhaust brake cannot be activated
-
DEB cannot be activated
73-8
Interruption in exhaust brake solenoid valve
(B192) on pin B9 of the ECU
-
Exhaust brake cannot be activated
74-1
Short circuit to supply of connection point for DIP
stop indicator on pin B6 of the ECU
-
No noticeable system limitation in UPEC
74-2
Short circuit to earth of connection point for DIP
stop indicator on pin B6 of the ECU
-
No noticeable system limitation in UPEC
74-8
Interruption in connection point for DIP stop
indicator on pin B6 of the ECU
-
No noticeable system limitation in UPEC
75-1
Short circuit to supply of DEB solenoid valve
(B247) on pin B18 of the ECU
-
Reduced braking power of DEB
75-2
Short circuit to earth of DEB solenoid valve
(B247) on pin B18 of the ECU
-
DEB permanently activated
-
Irregular engine running
75-8
Interruption in DEB solenoid valve (B247) on pin
B18 of the ECU
-
Reduced braking power of DEB
77-1
Short circuit to supply of DEB solenoid valve
(B248) on pin A8 of the ECU
-
Reduced braking power of DEB
77-2
Short circuit to earth of DEB solenoid valve
(B248) on pin A8 of the ECU
-
DEB permanently activated
-
Irregular engine running
77-8
Interruption in DEB solenoid valve (B248) on pin
A8 of the ECU
-
Reduced braking power of DEB
Fault code
Fault code description with possible cause
Symptom
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