P07AA: Transmission Friction Element E Performance/Stuck Off

Each friction element (clutch or brake) has three functional codes: slip while commanded locked (P079A ff), performance/stuck off – it does not apply or applies too weakly – and stuck on – it does not release. No manufacturer document available to us uses this code: GM's hybrids report clutch E only as slip (P079E) or stuck on (P07AB), only the Cadillac CT6 plug-in has a clutch 5. The description follows the family. A clutch that does not apply means a missing gear or slip, typically from worn plates, low pressure or a sticking valve.

Medium severity. Can I keep driving?Drive gently to a repair shop. If it slips, you hear clunks, or it loses its gears, do not keep driving.

Symptoms

Check engine light or transmission warning
Gear missing or slipping, weak acceleration
Limp mode

Most likely causes

Clutch E plates worn or piston seal leaking
Too little apply pressure (fluid, pump, valve)
Clutch actuator or valve sticking (DCT: electric actuator)
Module software or lost adaption

What to check, in order

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

Check the fluid level and condition
Compare the reading with other engine data while varying the engine speed.
Read the input and output speed in live data
Check the connector and wiring
Check for other related engine codes
Consult the manufacturer's procedure for the transmission

Good to know

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

What each character of P07AA means

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

Frequently asked questions

Can I keep driving with code P07AA?

Drive gently to a repair shop. If it slips, you hear clunks, or it loses its gears, do not keep driving.

What causes code P07AA?

The most common causes are: clutch E plates worn or piston seal leaking; too little apply pressure (fluid, pump, valve); clutch actuator or valve sticking (DCT: electric actuator).

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.