P0218

Schematic:

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 Transaxle Control Module (TCM) detects a high transmission fluid temperature for a long period of time, then DTC P0218 sets. DTC P0218 is a type C DTC.

DTC PARAMETERS
DTC P0218 will set if:
- The transmission fluid temperature is greater than 130°C (260°F) for ten minutes.
- No TFT sensor DTCs have been set.

DIAGNOSTIC AIDS
- Ask the customer about vehicle overloading exceeding trailer-towing limit, or towing in Overdrive.
- Transaxle oil cooler restricted.
- Transaxle oil cooler lines restricted.
- Radiator/condenser air flow restricted.
- Low transaxle fluid level.
- Inoperative cooling fans.