For 1990-2009 cars only
Circuit Description
If the engine control module (ECM) detects an engine overrun condition, this DTC will set.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC P0219 Engine Overspeed
Conditions for Running the DTC
The engine is running.
Conditions for Setting the DTC
The ECM detects an engine speed of 3,750 RPM or higher.
Action Taken When the DTC Sets
| • | The ECM does not illuminate the malfunction indicator lamp (MIL) when the diagnostic runs and fails. |
| • | The ECM records the operating conditions at the time the diagnostic fails. The ECM stores this information in the Failure Records. |
Conditions for Clearing the DTC
| • | A current DTC, Last Test Failed, clears when the diagnostic runs and passes. |
| • | Clear the malfunction indicator lamp (MIL) and the DTC with a scan tool. |
Diagnostic Aids
| • | This DTC is caused by an engine overspeed condition, which was most likely caused by driver error (i.e. downshifting a manual transmission on a steep grade). Since this DTC does not illuminate any lamps, clear the DTC and ensure there are no signs of engine damage. Excessive engine overspeed may damage internal engine components. |
| • | Make sure the CKP sensor is tight and the sensor wheel teeth are not damaged. |
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Engine Controls Schematics | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |
2 | Does the DTC set with the ignition ON or with the engine operating? | Go to Step 4 | Go to Step 3 |
3 | Ask the driver if overrun is caused by gear slip-out, shift error, etc. Did you complete the action? | Go to Step 4 | -- |
4 | Clear the DTCs and operate the vehicle. Do any other DTCs set? | System OK | |
