P08E8 code meaning
Drive Motor A Clutch Enable Circuit Low
Powertrain system Generic code P08xx codes Check engine light
What P08E8 means
Set when the voltage on the enable line of the drive motor A disconnect clutch actuator stays below the expected range, usually because the wire or the actuator input is shorted to ground. The control module can then no longer switch the actuator on, so the clutch cannot be engaged or released on command. No manufacturer documents this code publicly; the comparable hardware is the front drive unit of the Corvette E-Ray with its disconnect clutch actuator, pawl and switch, for which GM publishes only P08ED and an actuator communication fault. CARB requires such circuit monitoring. P08E7 is the general circuit fault, P08E9 the high-side counterpart. Electric drive on that axle is typically disabled.
P08E8 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor1 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P08E8
- Check engine light or hybrid system warning on
- Electric drive axle stays disconnected
- Reduced performance, no electric launch or all-wheel drive
Common causes of P08E8
- Most likelyEnable wire chafed and shorted to ground
- PossibleInternal short at the actuator enable input
- PossibleWater ingress in the actuator connector
- Less likelyFaulty output stage in the drive motor control module
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Drive motor a clutchDrive motor a clutch pawlWiring harness
What each part of P08E8 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 8 | Area: transmission. |
| E8 | The exact fault in that area. |
What to do next
- Note P08E8 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P08E8
What does P08E8 mean?
P08E8 means "Drive Motor A Clutch Enable Circuit Low". Set when the voltage on the enable line of the drive motor A disconnect clutch actuator stays below the expected range, usually because the wire or the actuator input is shorted to ground. It is a generic code, so it means the same on every make.
Is it safe to drive with P08E8?
Drive gently and only to a workshop. With P08E8 the car can go into limp mode (reduced power) to protect itself.
Will P08E8 fail an emissions test?
Yes, it can. P08E8 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P08E8 to fix?
Difficulty: hard. A typical repair takes 1 to 4 hours of work. This is a job for a workshop.
Will P08E8 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.