P07A5
Transmission Friction Element B Stuck On
Transmission — internal clutch/band
Generic OBD-II
High
What it means
P07A5 means internal friction element "B" — a clutch pack or band inside the transmission — is staying applied when it should release. A stuck-on element can fight against other gears, causing binding, harsh engagement, and even an engine stall when you shift into gear. This is a serious internal fault: keep driving to a minimum and have it diagnosed before it damages more of the transmission.
High
Can I keep driving? Drive as little as possible — a stuck-applied clutch or band can bind the transmission, stall the engine when you select a gear, and damage internal parts.
Common symptoms
What you'll notice
- Engine stalls or bogs when shifting into gear
- Difficulty shifting or transmission binding
- Harsh or delayed gear changes
- Transmission running hot
- Check-engine light on
Common causes
Most likely first
- Friction element B mechanically stuck applied (clutch pack or band not releasing)Likely
- Stuck-on solenoid or valve body passage holding apply pressureCommon
- Dirty or contaminated transmission fluid preventing releaseCommon
- Sensor or wiring fault causing an incorrect apply commandLess often
- Internal mechanical failure of the transmissionLess often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and note the conditions when the fault set.
- Check transmission fluid level and condition; contaminated fluid can keep an element from releasing.
- Inspect and test the solenoids and valve body for a stuck-on hydraulic circuit.
- Repair any wiring or connector faults commanding the element.
- If the element is mechanically stuck, the transmission needs teardown to free or replace the clutch/band.
FAQ
Quick answers
Is it safe to drive with P07A5?+
No — a friction element that won't release can tie up the transmission, stall the engine when you select a gear, and cause further damage. Have it towed or driven only the minimum distance to a shop.
Can I just clear P07A5?+
Clearing does nothing for a stuck element. The code returns immediately and the binding remains until the hydraulic or mechanical cause is fixed.
Related codes
Often seen with P07A5
Read & clear P07A5 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