Fault Conditions

Internal Control Module. Malfunction.







Fault symptoms
- CHECK ENGINE.

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

Enable criteria:
- Engine running.

Fault criteria:
- Voltage from atmosphere absolute pressure sensor higher than 4.920 V for more than 1 s.

Dependents:
- None.

System reaction to a fault:
- Charge air adaptation blocked and zeroed. The charge air pressure start value is used as a substitute value. The purging is blocked. All diagnoses with the general condition that the atmospheric pressure must exceed 72 kPa and the engine coolant and intake air temperature must exceed -7 °C are blocked.

OK report:
- Fault criteria for P1631, P1632 or P1633 not fulfilled.

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

Diagnostic help
Fault diagnosis concerns internal control module fault as the sensor is integrated in the control module.
Functions in the diagnostic tool related to the fault:
- Pressure sensor value, unit kPa.

The value should correspond with that of the other two pressure sensors when the engine is stationary. Accepted deviation: 10 kPa.
For information, Tech 2 Menu Structure, DTC Menu, Read Value, Activate, Sys Info

Proceed to Diagnostic Procedures Changing Components