Circuit Description
In order to reduce the engine temperature the PCM has the ability to disable a number of fuel injectors during an engine over temperature condition. The PCM considers the engine over temperature whenever the ECT reaches 131°C (268°F). This DTC sets in order to show that the PCM detected an over temperature condition and the PCM enabled the protection mode.
Conditions for Running the DTC
| • | DTCs P0117, P0118, P0125 are not set. |
| • | The engine is running. |
Conditions for Setting the DTC
| • | The ECT is greater than 132°C (270°F). |
| • | The above conditions exist for more than 10 seconds. |
Action Taken When the DTC Sets
| • | The PCM illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails. |
| • | The PCM records the operating conditions at the time the diagnostic fails. The PCM stores this information in the Freeze Frame and/or Failure Records. |
Conditions for Clearing the MIL/DTC
| • | The PCM turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail. |
| • | A last test failed, or current DTC, clears when the diagnostic runs and does not fail. |
| • | A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic. |
| • | Use a scan tool in order to clear the MIL and the DTC. |
Diagnostic Aids
Important:
• If an overheating condition exists, repair the overheat condition
and change the engine oil and filter. • For an intermittent condition, refer to
Symptoms
.
Test Description
The numbers below refer to the step numbers on the diagnostic table.
-
A cooling system condition will enable the engine protection mode. Refer to Engine Overheating in Engine Cooling.
Step | Action | Values | Yes | No |
|---|---|---|---|---|
Did you perform the Powertrain On-Board Diagnostic (OBD) System Check? | -- | Go to Engine Overheating in Engine Cooling |
