Powertrain
generic / SAE
P0650
Malfunction Indicator Lamp Control Circuit Malfunction
A fault in the wiring or control circuit between the ECU and the malfunction indicator lamp (MIL). The MIL may stay on permanently, fail to light at key-on, or flicker — the OBD-II self-check on the bulb itself failed.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number6 / 50
Possible causes
- MIL bulb burnt out (older clusters) medium
- Instrument cluster MIL driver failed medium
- Wiring fault between ECU and cluster low
Symptoms
- Check engine light on
- Possible limp mode or no-start
- Multiple follow-up faults across modules
- Reset/relearn may be needed after repair
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 50–600 €
- Estimated time: 0.5–4 h
- Component: mil lamp
- Component: mil wiring
- Component: instrument cluster
- MIL / check engine light
Sources
References
sae:J2012