OBD-II code · Powertrain (generic)
P07A5 Transmission Friction Element B Stuck On
Transmission Friction Element B Stuck On: the actuator is stuck in the on position.
Is it safe to drive with P07A5?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyStuck apply piston
- Less likelyCarbon or debris buildup preventing free movement
- Less likelyComponent wear with age - mechanical play
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 4–14 h
- Emissions test
- Usually unaffected
- Parts involved
- Clutch Pack B, Apply Piston
Related codes
- P07A3Transmission Friction Element A Stuck On
- P07A7Transmission Friction Element C Stuck On
- P07A9Transmission Friction Element D Stuck On
- P07ABTransmission Friction Element E Stuck On
- P07ADTransmission Friction Element F Stuck On
- P07AFTransmission Friction Element G Stuck On
- P07B1Transmission Friction Element H Stuck On
- P07A2Transmission Friction Element A Performance/Stuck Off
- P07A4Transmission Friction Element B Performance/Stuck Off
- P07A6Transmission Friction Element C Performance/Stuck Off
- P07A8Transmission Friction Element D Performance/Stuck Off
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.