(VIN: -039999) Trionic T7 V6 OBD II (B308E)

P0106
Manifold Absolute Pressure Sensor Circuit. Performance Problem.

Fault symptoms
- CHECK ENGINE.
- Engine speed drops slower than normal when accelerator pedal is released.
- Misfiring may occur before trouble code is generated.

On-Board Diagnostics
Type of diagnosis:
- Continuous. But interrupted when fault criteria fulfilled and does not restart until next driving cycle.





Enable conditions:
- General conditions for this trouble code: When starting the engine, the atmospheric pressure must exceed 78 kPa and the engine coolant and intake air temperatures must exceed -7°C.
- Test 1: Crankshaft stationary, even after ignition OFF. Car stationary. The difference in pressure between the other two absolute pressure sensors in the system less than 10 kPa.
- Test 2: Engine running. Engine speed above 1300 rpm. Engine load lower than 110 mg/c. Accelerator pedal fully released.

Fault criteria:
- Test 1: Sensor value differs more than 15 kPa form atmospheric absolute pressure sensor.
- Test 2: Sensor value exceeds 50 kPa.

Dependents:
- P0336 and P0337.

System reaction to a fault:
- Purging blocked. Correction of air mass/combustion for fuel calculation blocked. OK report:
- Test 1 and Test 2 performed once and fault criteria not fulfilled. Fault criteria for P0107 or P0108 not fulfilled.

Fault handling: See "Fault diagnosis, general" for more information.
- Type III.

Diagnostic help
Fault diagnosis concerns a fault in the sensor. A major vacuum leak can generate this trouble code.

Functions in the diagnostic tool related to the fault:
- Pressure sensor value, unit kPa. The value should correspond with the other two pressure sensors when the engine is stationary. Accepted difference is 10 kPa.

See also the description of readings in "Fault diagnosis, general" for more information.