Manufacturer Code Charts: 105208

105208 - P129C

Information saved in
DME

Fault code
105208 - P129C

Fault text
Ambient-pressure sensor, run-on: pressure implausible

Fault description
In control module's shutdown phase, at NMOT=0 all three
pressure sensors undergo mutual plausibility checks, intake-
manifold pressure, boost pressure and ambient barometric
pressure in the control module. A two out of three selection
process detects sensors outside the tolerance range

Condition for fault identification
Test condition:
If the barometric pressure deviates from the other two
sensors by more than 70 mbar then it is classified as
implausible
Potential problem source(s):
- Sensor in ECU is defective
- Ventilation orifice in ECU is obstructed
- Problem with EBOX ventilation
Terminal condition: none
Voltage condition:
->10 volts
Temperature condition:
- Induction air
- Control module temperature
Time condition:
- 2 seconds after engine stops during shutdown phase
Other conditions:
- in shutdown phase T>2 sec. with engine rpm=0
- Barometric pressure >750 hPa
- 20�< ECU temperature <146�
- 20� < Intake-air temperature < 100�

Condition for fault memory entry
This fault is logged in the control module's fault memory if
it remains present for longer than 0.2 sec.

Action in service
- Sensor on chip, measure with Terminal 15 on (Inpa)

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

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
- Data configured