P0127

10BA48 - P0127

Information saved in
DME

Fault code
10BA48 - P0127

Fault text
Intake air temperature sensor, plausibility: Intake air
temperature too high

Fault description
The diagnostic function monitors the intake-air temperature
to detect implausibly high figures.

Condition for fault identification
Test condition:
The fault is recognized when the intake-air temperature on
the engine-side of the air filter is more than 24 °C above the
intake-air temperature before the throttle valve.
Potential problem source(s):
- Defective wiring harness between DME and intake-air
temperature sensor
- Intake-air temperature sensor defective
- Defective DME
Terminal condition: none
Voltage condition:
- Onboard electrical system voltage between 9 V and 16 V
Temperature condition:
- None
Time condition:
- None
Other conditions:
- Engine on
- Vehicle speed in excess of 40 km/h

Condition for fault memory entry
This fault is logged in the control module's fault memory
immediately.

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

Fault effect and breakdown warning
Breakdown notice:
None
Possible apparent symptoms:
Engine runs roughly

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

Service instruction
None