Conditions

Charge Air Absolute Pressure Sensor Circuit. Performance Problem.





Fault symptoms
- CHECK ENGINE.
- Engine speed drops slower than normal when the accelerator is released.

On-Board Diagnostics

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

Enable criteria:
- Crankshaft stationary, even after ignition OFF. Car stationary. The other two absolute pressure sensors deviate less than 10 kPa from each other.

Fault criteria:
- Sensor value deviates more than 15 kPa from atmosphere absolute pressure sensor.

Dependents:
- P0336 and P0337.

System reaction to a fault:





- Density compensation of the throttle angle is blocked. The charge air adaptation is blocked and zeroed, the atmospheric pressure sensor is used as a substitute value.

OK report:
- Fault criteria for P1106, P1107 or P1108 not fulfilled.

Fault handling: Fault Handling III, Other Emission-Related Comp. & Function
- Type III.

Diagnostic help
Fault diagnosis concerns sensor fault.

Diagnostic tool functions related to this fault are:
- Pressure sensor reading, in kPa.

With the engine switched off, the reading should correspond with those of the other two pressure sensors. Permissible difference is 10 kPa.

See also the description of test values under "Fault diagnosis, general" for more information.
Tech 2 Menu Structure, DTC Menu, Read Value, Activate, Sys Info

Proceed to Diagnostic Procedures Changing Components