OBD-II code · Powertrain (generic)
P06DA Engine Oil Pressure Control Circuit Open
Modern engines use an electrically controlled variable-displacement oil pump or a pressure regulator solenoid. The control circuit on this regulator has an open circuit - the ECU cannot vary oil pressure with load and the pump runs at default mechanical pressure.
Is it safe to drive with P06DA?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOpen in solenoid or wiring
- Less likelyPin pushed back out of connector body
- Less likelyCracked solder joint inside the module or sensor
Symptoms
- Check engine light on
- Possible limp mode or no-start
- Multiple follow-up faults across modules
- Reset/relearn may be needed after repair
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–3.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Oil Pressure Regulator, Variable Displacement Oil Pump
Related codes
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.