OBD-II code · Powertrain (generic)
P06DC Engine Oil Pressure Control Circuit High
Same as P06DA with the control line shorted to supply. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
Is it safe to drive with P06DC?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyControl line shorted to supply
- Less likelyConnector pins corroded - high contact resistance
- Less likelySupply wire pinched against B+ source
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
Related codes
- P06D9Sensor Reference Voltage F Circuit Range or Performance
- P06DAEngine Oil Pressure Control Circuit Open
- P06DBEngine Oil Pressure Control Circuit Low
- P06DDEngine Oil Pressure Control Circuit Performance Stuck Off
- P06DEEngine Oil Pressure Control Circuit Stuck On
- P06DFGlow Plug Control Module 1 Memory Checksum Error
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.