P0655

Symptoms

• Check Engine light comes on
• The overheating indicator does not light up when testing lamps when the ignition is turned on
• If the engine actually overheats, the driver does not receive a warning
• Otherwise the car works fine
• Detected only during diagnostics with a scanner

Causes

• Burnt out overheat indicator lamp
• Lamp control circuit wire break
• Short circuit in control circuit
• ECU output stage malfunction
• Malfunction of the instrument panel control unit

How to Fix

1. Check the operation of the overheating lamp when the ignition is turned on (self-test)
2. Replace a burnt out lamp in the dashboard
3. Check the control wire from the ECU to the dashboard
4. Measure the voltage at the control output of the computer
5. Check the dashboard fuses
6. If the ECU output stage is faulty - repair or replacement

Related codes

Error P0655 by Vehicle Brand