Symptoms

- Engine Light ON (or Service Engine Soon Warning Light) - Possible shifting problems

Possible Causes

- Transmission fluid temperature sensor circuit is open or shorted. - Poor transmission fluid temperature sensor circuit connection - Faulty transmission fluid temperature sensor

When Detected

The Engine Control Module (ECM) detected engine temperature change but recorded no transmission temp change

Description

The Automatic Transmission (A/T) fluid temperature sensor detects the A/T fluid temperature and sends a signal to the TCM.