1B9508

1B9508 - P15E8

Information saved in
DME

Fault code
1B9508 - P15E8

Fault text
Engine switch-off time, plausibility: Time to short in
correlation to engine-coolant cooling

Fault description
The diagnostic function monitors the time that the engine
requires to cool.

Condition for fault identification
Test condition:
The fault is recognized when the engine has cooled too
quickly after a specific period of time.
Potential problem source(s):
- Collateral fault resulting from malfunction in registering
engine temperature
Terminal condition: none
Voltage condition:
Voltage in onboard electrical system > 10 V
Temperature condition:
Engine shutdown temperature > 80 °C
Time condition:
Engine off time greater than value from program map
Other conditions:
Engine on

Condition for fault memory entry
This fault is logged in the control module fault memory if it
remains present for longer than 20 sec.

Action in service
- Because this is a collateral fault, start by resolving issues
related to other faults logged in the DME related to engine
temperature monitoring; no additional action will be needed
with these kinds of faults

Fault effect and breakdown warning
Breakdown notice:
None
Possible apparent symptoms:
- none

Driver information
Warning light:
MY10:
no
MY11:
- ECE emissions warning lamp: off
- US emissions warning lamp: on
- ECE electronic engine power reduction: off
- US electronic engine power reduction: off
- CC message: One

Service instruction
None