P12A6

104602 - P12A6

Information saved in
DME

Fault code
104602 - P12A6

Fault text
Absolute pressure sensor 2, intake pipe: Afterrunning,
pressure too low

Fault description
During the control module's shutdown phase the diagnostic
function monitors the barometric pressure sensor, intake-
manifold sensor and the pressure sensor on the air-intake
side of the throttle valve to determine whether they are all
measuring the same pressure.

Condition for fault identification
Test condition:
The fault is recognized when the indicated sensor value on
Bank 2 deviates by (-330 mbar or 10 %) during the post-
operational shutdown phase.
Potential problem source(s):
- Defect in wiring harness
- Fault in intake-manifold pressure sensor
Terminal condition: none
Voltage condition:
- Electrical system voltage > 10 V
Temperature condition:
- 10 °C < control module temperature < 150 °C
- 10 °C < intake-air temperature < 90 °C
Time condition:
- 5 seconds after engine stops during post-operational
shutdown phase
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 2.2 sec.

Action in service
- Check signal transmission path
- Replace sensor

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

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