P07A8
Transmission Friction Element D Performance/Stuck Off
Transmission (internal clutch/band)
Generic OBD-II
Medium
What it means
P07A8 means internal friction element D — a clutch pack or band — is under-performing or stuck in the "off" (released) position, so it isn't applying when commanded. The transmission may slip in the affected gear, shift harshly, or enter a failsafe mode. Low or contaminated fluid, a weak solenoid, or a worn element are the common causes.
Medium
Can I keep driving? You can drive gently, but the affected gear may slip or not engage and the transmission can overheat — keep trips short and get it inspected.
Common symptoms
What you'll notice
- Slipping or delayed shifts
- Harsh or rough shifting
- Loss of power or weak acceleration
- Transmission overheating
- Check-engine light on
Common causes
Most likely first
- Low or contaminated transmission fluid reducing apply pressureLikely
- Faulty solenoid not applying friction element DCommon
- Worn or damaged friction element (clutch pack or band)Common
- Valve-body wear or a damaged apply circuitLess often
- Wiring or connector fault in the affected solenoid circuitLess often
How to diagnose & fix
Work through it in order
- Check transmission fluid level and condition; service if low or dirty.
- Inspect and clean the transmission solenoids; replace any that fail testing.
- Perform a fluid and filter service if the fluid is contaminated.
- Repair any damaged wiring or connectors in the transmission circuit.
- If the element still won't apply, the transmission needs internal inspection of friction element D.
FAQ
Quick answers
Is it safe to drive with P07A8?+
Short trips are usually possible, but a friction element that won't apply causes slipping and heat, so limit driving until it's repaired.
Can I just clear P07A8?+
It will return as soon as the element fails to apply again; the fluid, solenoid, or clutch problem has to be fixed first.
Related codes
Often seen with P07A8
Read & clear P07A8 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX