JCB P0115: Engine Coolant Temperature Sensor Circuit 1 Fault

The engine coolant temperature sensor circuit 1 is not functioning properly. This may result in incorrect temperature readings being sent to the controller, which can affect engine performance and diagnostics.

1. 1

   The connection and wiring of the engine coolant temperature sensor

2. 2

   The integrity of the circuit 1 wiring and harness

3. 3

   The functionality of the engine coolant temperature sensor

1. 1

   Inspect

   Check the physical condition and connections of the engine coolant temperature sensor.

2. 2

   Test

   Use a multimeter to test the resistance of the engine coolant temperature sensor and compare it to the manufacturer's specifications.

3. 3

   Verify

   Check the circuit 1 wiring and harness for any damage, corrosion, or loose connections.