P06DAEngine Oil Pressure Control Circuit/Open
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Needs a drive cycle to confirm a fix
- How the car detects it
- A switchable or variable oil pump saves fuel by lowering its output at part load; a solenoid valve sets the stage. GM and Ford design it so the pump runs at full output, i.e. high pressure, when the valve is unpowered – the safe default – and at the low stage when powered. P06DA means the control circuit of this valve is open: it can no longer be powered, so the pump stays at high pressure. GM measures the voltage with the driver off and flags more than 200 kΩ after two trips; some GM modules set P06DB instead. GM checks the low-side driver at 11 V or more relay voltage over 40 of 50 samples (100 ms); Ford's smart driver reports output faults after 5 s with the battery at 11 V or more. Mitsubishi's 2022 Outlander uses the same code. The engine is not at risk, the pump just can no longer be regulated.
- What you may notice
- Check engine light after two trips
- Usually no noticeable symptom, oil pressure permanently high
- Slightly higher fuel consumption
- Likely causes
- LikelyConnector at the control valve loose or corroded (often at the pump in the oil pan)
- PossibleValve coil open or valve broken
- PossibleSupply (main relay) or control wire broken
- RareEngine module software
- Repair
- Medium · Usually a job for a workshop.Typical cost: €60 – €450
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.