P08E8: 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. 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.

High severity. Can I keep driving?If the car still runs, drive as little as possible and go to a specialized repair shop. Do not touch the orange cables: they carry high voltage.

Symptoms

Check engine light or hybrid system warning on
Electric drive axle stays disconnected
Reduced performance, no electric launch or all-wheel drive

Most likely causes

Enable wire chafed and shorted to ground
Internal short at the actuator enable input
Water ingress in the actuator connector
Faulty output stage in the drive motor control module

What to check, in order

Start with the simplest. You can tick off each step.

Read the codes with a hybrid-compatible scanner and write down the freeze frame data
With the connector unplugged, check whether the signal wire is making contact with ground.
Make sure the battery cooling air intake is clean
Check the 12 V auxiliary battery, which can also trigger warnings
Leave any high-voltage measurements to a specialized repair shop

Good to know

Repair difficulty: hard
It can trigger limp mode.
It affects emissions.

What each character of P08E8 means

P: Powertrain: engine and transmission
0: Generic code: same on every make
8: Transmission
E8: Specific fault in that system

Frequently asked questions

Can I keep driving with code P08E8?

If the car still runs, drive as little as possible and go to a specialized repair shop. Do not touch the orange cables: they carry high voltage.

What causes code P08E8?

The most common causes are: enable wire chafed and shorted to ground; internal short at the actuator enable input; water ingress in the actuator connector.

Related codes

Sources

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.