P1369 Code Description
The diagnostic code P1369 (DTC) indicates a malfunction in the engine temperature control light. This code generally means that the vehicle’s onboard computer system has detected a problem with the engine temperature sensor or its associated circuits. The engine temperature sensor is responsible for monitoring the engine coolant temperature and sending this information to the Engine Control Module (ECM) to ensure the engine operates within the optimal temperature range.
Common Causes of P1369
NOTE: The listed causes may not be a complete list of all potential issues, and there could be other causes.
- Faulty engine temperature sensor
- Wiring or connector issues related to the engine temperature sensor
- ECM software malfunction
- Cooling system problems such as a faulty thermostat or water pump
- Electrical issues such as a blown fuse or relay related to the engine temperature sensor
Symptoms of P1369
- Engine temperature gauge fluctuates or does not work
- Check engine light is on
- Engine overheating or running too hot
- Poor fuel efficiency
- Engine stalling or rough idling
How to Fix P1369
- Diagnose the issue using a scan tool to read the DTC and check the engine temperature sensor readings.
- Inspect the wiring and connectors associated with the engine temperature sensor for any damage or corrosion.
- Test the engine temperature sensor for proper operation and replace it if necessary.
- Check and repair any cooling system components that may contribute to the problem, such as the thermostat or water pump.
- Clear the DTC and test the vehicle to ensure the issue is resolved.