Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information ECM-P222900

Condition
The Engine control module (ECM) measures the atmospheric pressure using an atmospheric pressure sensor. The control module checks the direct voltage from the sensor.

Note! The atmospheric pressure sensor is integrated in the Engine control module (ECM).

The diagnostic trouble code (DTC) is stored if the control module detects that:
- The direct voltage is higher than 4.526 V.
- Incorrect value lasts longer than 9 seconds.
- Incorrect value lasts for 2 or more subsequent driving cycles.
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- Ignition switch position II.

Note! The control module can only detect the fault once the test has been started and the diagnostic trouble code (DTC) is stored when the conditions are met.





Substitute value
- The control module uses a value for atmospheric pressure that is calculated based on the air pressure in the inlet manifold.
- If a malfunction has been detected on the air pressure sensor, the control module uses a constant atmospheric pressure, 100 kPa (corresponds to sea level).

Possible source
- Damaged engine control module (ECM).

Note! The diagnostic trouble code can be generated as a subsequent malfunction to a detected problem with the air pressure sensor in the inlet manifold.

Fault symptom[s]
- Malfunction indicator light (MIL), on