P08ED: Drive Motor A Clutch Pawl Position Performance

A plausibility fault: the pawl position reported for the drive motor A disconnect clutch does not match what the control module commanded, or the clutch did not reach the expected position, even though the circuit itself is electrically intact. GM documents the code for the 2024 Corvette E-Ray, whose front electric drive unit uses a clutch pawl and a disconnect clutch actuator; bulletin 24-NA-165 says it is stored in the drive motor control module, lights the MIL and is usually caused by the disconnect clutch switch, which is replaced as an external part. Electrical faults of the same signal are P08EA to P08EC; actuator enable faults are P08E7 to P08E9. The driver mostly sees the warning lamp and loss of electric front drive.

Symptoms

• Malfunction indicator lamp on
• Electric front-axle drive unavailable or intermittent
• Hybrid modes restricted

Most likely causes

• Faulty drive motor disconnect clutch switch (GM E-Ray bulletin)
• Disconnect clutch actuator not moving the pawl fully
• Worn or binding pawl or clutch teeth inside the drive unit

What to check, in order

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

1. Read the codes with a hybrid-compatible scanner and write down the freeze frame data
2. Compare the reading with other engine data while varying the engine speed.
3. Make sure the battery cooling air intake is clean
4. Check the 12 V auxiliary battery, which can also trigger warnings
5. 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 P08ED means

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

Frequently asked questions

Can I keep driving with code P08ED?

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 P08ED?

The most common causes are: faulty drive motor disconnect clutch switch (GM E-Ray bulletin); disconnect clutch actuator not moving the pawl fully; worn or binding pawl or clutch teeth inside the drive unit.

Related codes

• P08EADrive Motor A Clutch Pawl Position Circuit
• P08EBDrive Motor A Clutch Pawl Position Circuit Low
• P08ECDrive Motor A Clutch Pawl Position Circuit High
• P08E7Drive Motor A Clutch Enable Circuit

Sources

• static.nhtsa.gov: MC 11007913 0001
• static.nhtsa.gov: MC 11009203 0001
• gm-techlink.com
• law.cornell.edu: 13 CCR 1968.2

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.