Broken, chafed, or disconnected wire in the oil pressure control solenoid circuit; Corroded or loose electrical connector at the oil pressure control solenoid; Failed oil pressure control solenoid (open internal coil); Faulty engine oil pressure sensor sending incorrect feedback; Engine computer (ECM/PCM) internal driver failure for that circuit; Low engine oil level or severely degraded oil causing the solenoid to overheat and fail; Blown fuse or poor ground connection shared with the solenoid circuit

DTC codes / P06xx · Computer and output circuits / P06DA

P06DAEngine Oil Pressure Control Circuit/Open

Q: What does code P06DA mean?

Engine Oil Pressure Control Circuit/Open. P06DA means the engine computer has detected an open circuit in the wiring that controls the engine oil pressure control solenoid, so it cannot command the oil pump to change pressure as designed. The computer monitors the control circuit for expected voltage or current and flags an open when the signal is missing or out of range.

P06DA means the engine computer has detected an open circuit in the wiring that controls the engine oil pressure control solenoid, so it cannot command the oil pump to change pressure as designed. The computer monitors the control circuit for expected voltage or current and flags an open when the signal is missing or out of range.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaComputer and output circuits

Symptoms you may notice

Illuminated check engine light, often with no other noticeable symptoms
Low oil pressure warning light or message on the dashboard
Engine may enter reduced power or limp mode to protect itself
Rough running or stalling if oil pressure control affects variable valve timing
Poor fuel economy or increased oil consumption in some cases
Audible ticking or knocking from the engine if oil pressure is genuinely low

Common causes, most likely first

Broken, chafed, or disconnected wire in the oil pressure control solenoid circuit
Corroded or loose electrical connector at the oil pressure control solenoid
Failed oil pressure control solenoid (open internal coil)
Faulty engine oil pressure sensor sending incorrect feedback
Engine computer (ECM/PCM) internal driver failure for that circuit
Low engine oil level or severely degraded oil causing the solenoid to overheat and fail
Blown fuse or poor ground connection shared with the solenoid circuit

How to diagnose and fix it

Check engine oil level and condition; top up or change oil if needed
Inspect the oil pressure control solenoid connector and wiring for damage, corrosion, or looseness
Test the solenoid circuit with a multimeter for continuity and short-to-ground
Measure the resistance of the oil pressure control solenoid and compare to manufacturer specification
Check for applicable technical service bulletins (TSBs) or software updates for the engine control module
Replace the oil pressure control solenoid if electrically open or out of specification
Clear the code and verify the repair with a road test and live data monitoring

What P06DA does not always mean

P06DA is an electrical circuit code, so it often sets even when actual oil pressure is normal and the engine runs fine.
A weak or failing oil pressure sensor can mimic a solenoid circuit fault by sending erratic feedback to the computer.
On some engines, the oil pressure control solenoid shares a power or ground circuit with other components, so a fault elsewhere can trigger this code.
Replacing the solenoid without checking the wiring harness is a common misdiagnosis that leads to repeat failures.
The code can be set by a momentary open caused by vibration or heat, so intermittent faults may not appear during a quick inspection.

Can I keep driving with P06DA?

If the engine oil pressure warning light is not on and the engine sounds normal, you can drive cautiously to a repair shop, but avoid hard acceleration and heavy loads. If the oil pressure light is illuminated or the engine is noisy, stop driving immediately and have the vehicle towed to prevent severe engine damage.

Tools that help

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Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.