Code Definition

P06DE — Engine Oil Pressure Control Circuit Stuck On

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P06DE

P06DE is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P06DE is stored, the module has detected an electrical-circuit fault in the wiring, connector, or driver associated with the named component.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P06DE is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The engine control module monitors the engine oil pressure control solenoid valve circuit to regulate oil pressure according to engine speed, load, and temperature by varying the output of a variable displacement oil pump. DTC P06DE is logged when the module detects that the oil pressure control circuit is stuck on, meaning the solenoid appears continuously energised, or the commanded oil pressure and the actual measured oil pressure do not correlate. This typically results in oil pressure remaining high even when reduced pressure is commanded, which increases parasitic load on the oil pump an...

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