P0B0C
Electric/Auxiliary Transmission Fluid Pump A Hydraulic Leakage
Generic OBD-II
Common symptoms
What you'll notice
- Check and replace the electric/auxiliary transmission fluid pump if it is faulty
- Inspect and repair any hydraulic leaks in the transmission system
- Ensure proper fluid levels and exchange the transmission fluid if needed
- Conduct a thorough inspection of the transmission system for any other potential issues such as damaged seals or valves
Common causes
Most likely first
- Faulty electric/auxiliary transmission fluid pump
- Hydraulic leakage in the transmission system
- Low transmission fluid level or insufficient fluid pressure
- Damaged or worn
- out seals or gaskets in the transmission system
- Clogged transmission fluid filter
How to diagnose & fix
Work through it in order
- Difficulty shifting gears or no response when attempting to shift
- Slipping or jerking movements during acceleration or deceleration
- Vehicle stalling or difficulty starting
- Decreased fuel efficiency
- Unusual noises or vibrations coming from the transmission system
Read & clear P0B0C yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.