P0115

3EF0 - P0115

Information saved in
DDE

Fault code
3EF0 - P0115

Fault text
DDE: Coolant temperature sensor, plausibility: no
temperature increase

Fault description
Dynamic plausibility check on coolant temperature sensor.
The diagnostic trouble code is logged when the difference
between the current coolant temperature and the coolant
temperature at engine start is less than a limit defined with
the program map.

Condition for fault identification
Test condition:
The monitoring system is active when compliance with the
following conditions is present:
- The coolant temperature at engine start must exceed 40 �C.
- The injection quantity must exceed 11 mg/hub.
- The engine rpm must be in excess of 1000 1/min.
If one of the conditions listed above is not satisfied within a
period defined in the program map, the timer stops and
restarts from this count when compliance with the
conditions is again present. The timer is not reset until the
next driving cycle.
Voltage condition:
The monitoring system is active when compliance with the
following conditions is present:
- The coolant temperature at engine start must exceed 40 �C.
- The injection quantity must exceed 11 mg/hub.
- The engine rpm must be in excess of 1000 1/min.
If one of the conditions listed above is not satisfied within a
period defined in the program map, the timer stops and
restarts from this count when compliance with the
conditions is again present. The timer is not reset until the
next driving cycle.

Condition for fault memory entry
-None.

Action in service
Replace coolant temperature sensor.

Fault effect and breakdown warning
Proceed to the nearest BMW Service facility.

Driver information
Warning light:
MIL

Service instruction
none