Causes of an error in the automatic transmission temperature sensor:
* Faulty automatic transmission temperature sensor
*Damaged or loose wiring harness
* Faulty automatic transmission control module (TCM)
* Low fluid level in automatic transmission
* Clogged automatic transmission cooling system
*Wiring or grounding problems
Symptoms of an error in the automatic transmission temperature sensor:
*Check Engine Light comes on
* Automatic transmission goes into emergency mode (gear limitation or slipping)
* Deterioration of gear shifting
* Automatic transmission overheating
* Fluid leakage from automatic transmission
Diagnostics and troubleshooting:
1. Read Trouble Codes: Use an OBD-II scanner to read trouble codes associated with the automatic transmission temperature sensor.
2. Check the automatic transmission temperature sensor: Inspect the sensor for damage or contamination. Use a multimeter to check the resistance of the sensor as the temperature changes.
3. Check Wiring Harness: Inspect the wiring harness for kinks, cuts, or other damage. Make sure all connectors are tight.
4. Check the automatic transmission fluid level: Make sure the fluid level meets the manufacturer’s recommendations.
5. Check the automatic transmission cooling system: Inspect the radiator for blockages or damage. Also check the cooling system lines for leaks or kinks.
6. Check Wiring and Grounding: Make sure all wires are properly connected and grounded.
After troubleshooting:
* Erase fault codes.
* Road test the vehicle to ensure the problem is resolved.
* Contact a service center if the problem persists.