P008F

4CF6 - P008F

Information saved in
DDE

Fault code
4CF6 - P008F

Fault text
Fuel temperature sensor, plausibility:

Fault description
Fuel temperature plausibility check with Terminal 15 on.
The diagnostic trouble code is logged when the difference
between fuel temperature and coolant temperature rises
above the limit value.
The limit value (roughly 21 �C) is calculated using a
characteristic curve based on the engine's downtime.

Condition for fault identification
Test condition:
The error check runs once per driving cycle provided that
compliance with the following conditions is present:
- The engine downtime is greater than or equal to 25200 s.
- No other error is logged.
- The intake-air temperature lies above the threshold -7 �C.
Voltage condition:
The error check runs once per driving cycle provided that
compliance with the following conditions is present:
- The engine downtime is greater than or equal to 25200 s.
- No other error is logged.
- The intake-air temperature lies above the threshold -7 �C.

Condition for fault memory entry
-None.

Action in service
1. Check wires and plug connections.
2. If wiring and plug connections are OK:
Replace fuel pressure and temperature sensor (on vehicles
without closed-loop control of low-pressure fuel-delivery
circuit: fuel-temperature sensor).

Fault effect and breakdown warning
-

Driver information
Warning light:
MIL

Service instruction
none