JCB P0669: ECU Internal Temperature Sensor High Fault

The system has detected a high temperature reading from the ECU internal temperature sensor. This may indicate overheating or a malfunction in the component identified by this code.

1. 1

   ECU internal temperature sensor

2. 2

   the affected circuit

1. 1

   Inspect

   Inspect the ECU internal temperature sensor for physical damage or signs of overheating.

2. 2

   Test

   Test the ECU internal temperature sensor for proper operation using the appropriate diagnostic tools.

3. 3

   Check

   Check the affected circuit for any issues that may be causing incorrect temperature readings.