P12B8

105202 - P12B8

Information saved in
DME

Fault code
105202 - P12B8

Fault text
Ambient-pressure sensor, run-on: pressure too low

Fault description
The diagnostic function monitors the voltage at the boost
pressure sensor.

Condition for fault identification
Test condition:
The fault is recognized when the boost-pressure sensor's
voltage is < 0.2 V.
Potential problem source(s):
- Defect in wiring harness between DME and boost-pressure
sensor
- Boost-pressure sensor defective
- Defective DME
Terminal condition: none
Voltage condition:
- Onboard electrical system voltage between 9 V and 16 V
Temperature condition:
- None
Time condition:
- 5 sec. after engine off
Other conditions:
- Shutdown phase

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

Action in service
- Replace the DME if the fault code is currently present or
has been logged more than three times

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

Driver information
Warning light:
MY10 ECE:
- ECE emissions warning lamp: off
- ECE electronic engine power reduction: off
- CC message: none
MY10 US:
- US emissions warning lamp: on
- US electronic engine power reduction: off
- CC message: on
MY11 ECE:
- ECE emissions warning lamp: on
- ECE electronic engine power reduction: off
- CC message: on

Service instruction
None