Technical Definition:
Malfunction Indicator Lamp (MIL) Control Circuit
Trouble Code: P0650
Address: 0x0650
System: Powertrain
Subsystem: Computer and Auxiliary Output Circuits
Address: 0x0650
System: Powertrain
Subsystem: Computer and Auxiliary Output Circuits
Technical Description:
This diagnostic trouble code (DTC) is set when the vehicle’s Powertrain Control Module detects a fault with the Malfunction Indicator Lamp (MIL) electrical circuit.
Possible Causes:
- Burned out MIL bulb/LED
- MIL wiring problem (short or open electrical condition)
- Poor electrical connection at the bulb/cluster/PCM
- Failed/faulty PCM
Possible Symptoms:
- Malfunction indicator lamp NOT illuminating when it should (check engine light or service engine soon light)
- MIL being illuminated all the time
Malfunction Indicator Lamp Control Circuit Malfunction
Possible Solutions:
OBD-II Trouble Code Type:
Diagnostic Step:
Tech Notes:
– Faulty Malfunction Indicator Lamp Bulb
– Malfunction Indicator Lamp Bulb harness is open or shorted
– Malfunction Indicator Lamp Bulb circuit poor electrical connection
– Faulty Engine Control Module (ECM)