Operation CHARM: Car repair manuals for everyone.

P0118

109001 - P0118

Information saved in
DME

Fault code
109001 - P0118

Fault text
Coolant-temperature sensor, electric: short circuit to positive
or open circuit

Fault description
The diagnostic function monitors the upper voltage limit of
the coolant-temperature sensor.

Condition for fault identification
Test condition:
The fault is recognized when the voltage exceeds 3.24 V.
Potential problem source(s):
- Defect in wiring harness between DME and sensor
- Sensor defective
Terminal condition: none
Voltage condition:
- Electrical system voltage > 9.15 V
Temperature condition:
- None
Time condition:
- 3 sec. after engine start when intake-air temperature is < 25
°C
Other conditions:
- none

Condition for fault memory entry
This fault is logged in the control module's fault memory if
it remains present for longer than 1.5 sec.

Action in service
- Check wiring harness between DME and sensor
- Replace sensor

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

Driver information
Warning light:
- ECE emissions warning lamp: on
- US emissions warning lamp: on
- ECE electronic engine power reduction: off
- US electronic engine power reduction: off
- CC message: none

Service instruction
- none