Powertrain, generic · Transmission

P08EC Drive Motor A Clutch Pawl Position Circuit High

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

Set when the pawl position signal of the drive motor A disconnect clutch stays above its valid range. Typical reasons are an open signal or ground wire, which lets the input float high, or a short to a supply voltage. The module then has no trustworthy feedback on whether the clutch is engaged. No manufacturer documents this code publicly; the closest documented hardware is the disconnect clutch switch on the Corvette E-Ray front drive unit, tied by GM only to P08ED, and patents on pawl or strut clutches with position sensors show the principle. CARB requires out-of-range monitoring. P08EB is the low-side fault, P08EA the general circuit fault, P08ED the plausibility check. Electric drive on that axle is usually locked out.

Likely causes

Open signal or ground wire of the position switch
Signal wire shorted to a supply circuit
Position switch or sensor failed high

Symptoms

  • Check engine light or hybrid system warning on
  • No electric drive from the affected axle
  • All-wheel drive or electric launch missing

Repair estimate

DifficultyHardWorkshop job
Parts and labour€150–1,200
Time1–4 h

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

Parts involved

drive motor a clutchdrive motor a clutch pawlwiring harness

Related codes

P08EAP08EBP08ED

References: law.cornell.edu, static.nhtsa.gov, patents.google.com.