P0218
DTC P0218 (2.2 L and 3.4 L)Schematic:
Circuit Description
The transmission fluid pump is constantly circulating fluid through the torque converter. Hot fluid leaving the converter flows through the transmission cooler lines to the oil cooler, located in the vehicle radiator. From the cooler, the fluid returns to the transmission.
Lube 1 fluid flows through the input shaft to lubricate the transmission components in the front of the transmission. The Lube 2 fluid circuit is fed by line pressure at the pressure regulator valve. Lube 2 fluid flows through the oil feed pipes, and into the forward clutch support. Lube 2 fluid provides lubrication to the rear components of the transmission.
When the PCM detects a high transmission fluid temperature for a long period of time, then DTC P0218 sets. DTC P0218 is a type C DTC.
Conditions for Running the DTC
No TFT DTCs P0711, P0712 or P0713.
Conditions for Setting the DTC
The transmission fluid temperature is greater than 130°C (260°F) for 10 minutes.
Action Taken When the DTC Sets
- The PCM does not illuminate the Malfunction Indicator Lamp (MIL).
- The PCM freezes transmission adapt functions.
- The PCM records the operating conditions when the Conditions for Setting the DTC are met. The PCM stores this information as Failure Records.
- The PCM stores DTC P0218 in PCM history.
Conditions for Clearing the DTC
- A scan tool can clear the DTC.
- The PCM clears the DTC from PCM history if the vehicle completes 40 warm-up cycles without a non-emission-related diagnostic fault occurring.
- The PCM cancels the DTC default actions when the fault no longer exists and the DTC passes.
Diagnostic Aids
Ask the customer about overloading the vehicle, exceeding the trailer-towing limit, or towing in Overdrive.
Test Description
Steps 1-5:
Steps 6-7:
The numbers below refer to the step numbers on the diagnostic table.
2. This step tests for low fluid level, which can cause high transmission fluid temperatures.
3. This step inspects for transmission cooling restrictions.