P08CE: Shift Solenoid J Stuck On

Set when shift solenoid J is switched off but its clutch or shift valve stays applied, so the valve behaves as if stuck in its on position. No manufacturer documents this code publicly. GM's P0752 on the 6-speed transmissions is the nearest documented counterpart: with third gear commanded, the TCM flags shift solenoid A stuck on when the gearbox slip reaches 400 rpm while first or second gear is actually obtained, and the MIL comes on after one trip. Ford sets its stuck-on codes P0752 to P0772 from the gear or shift pattern actually reached. CARB requires such functional monitoring. P08CD is the opposite fault. Because an applied clutch can tie up the gearbox, drivers may feel a wrong gear, a harsh engagement or limp mode.

Symptoms

• Check engine or transmission warning light on
• Wrong gear or harsh engagement, possible binding feel
• Transmission goes into limp mode

Most likely causes

• Solenoid or its shift valve held in the applied position by debris or varnish
• Contaminated transmission fluid after internal wear
• Control circuit shorted so the solenoid stays energised
• TCM output driver does not switch off

What to check, in order

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

1. Check the fluid level and condition according to the manufacturer
2. Use the scanner to command the movement and compare the actual position with the requested one.
3. Check the transmission connector
4. Read the data with a transmission-compatible scanner
5. Measure the solenoid valve circuit
6. Leave opening the transmission to a specialized repair shop

Good to know

• It can trigger limp mode.
• It affects emissions.

What each character of P08CE means

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

Frequently asked questions

Can I keep driving with code P08CE?

Drive as little as possible and gently. If the transmission slips or stays in one gear, go slowly to a repair shop or call for a tow truck.

What causes code P08CE?

The most common causes are: solenoid or its shift valve held in the applied position by debris or varnish; contaminated transmission fluid after internal wear; control circuit shorted so the solenoid stays energised.

Related codes

• P08CCShift Solenoid J
• P08CDShift Solenoid J Performance/Stuck Off
• P08CFShift Solenoid J Electrical
• P08D3Shift Solenoid J Control Circuit High
• P08D7Shift Solenoid K Stuck On
• P0752Shift Solenoid A Stuck On
• P0751Shift Solenoid A Performance/Stuck Off

Sources

• gsi.ext.gm.com: 16OBDG03 Transmission Diagnostics
• fordservicecontent.com: OBD Operations Summary Gasoline 2020 2023
• 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.