Powertrain, generic · Computer and auxiliary outputs

P06DE Engine Oil Pressure Control Circuit Stuck On

Check engine lightOn
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

A switchable oil pump changes its output via a solenoid valve; powered it runs at the low stage. To test it, the module switches the pump between stages (GM up to 15 times, with oil at 50–110 °C and 1350–2500 rpm, expecting more than 100 kPa difference) and watches the oil pressure sensor; Ford checks each switch-over of a two-stage pump within 1 s, or a variable pump over 10 s, from 30 s after start. P06DE is the counterpart of P06DD: the commanded high stage is not reached and the pressure stays below the threshold, as if the valve were stuck on. Too little oil pressure at high load endangers the engine, so GM sets it after just one trip; a Ford patent raises idle speed in this case. A short to ground on the control wire (P06DB) has the same effect electrically. An FCA bulletin for the 3.6 L V6 fixes false codes by software.

Likely causes

Control valve stuck in the powered position
Low oil level, diluted or sludged oil, aeration
Pump wear or internal leakage
Engine module software (FCA 3.6 L)
Oil pressure sensor

Symptoms

  • Check engine light at once
  • Oil pressure warning at higher engine speed possible
  • Possibly reduced power or raised idle
  • Valvetrain or chain tensioner noise from lack of oil

Repair estimate

DifficultyHardWorkshop job
Parts and labour€100–3,500
Time1–12 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

oil pump control valveoil pumpoil pressure sensorengine control module

Related codes

P06DDP06DBP0524P0521P0520

References: gsi.ext.gm.com, gsi.ext.gm.com, fordservicecontent.com, static.nhtsa.gov.