P0B0C
Electric/Auxiliary Transmission Fluid Pump A Hydraulic Leakage
Generic OBD-II
What it means
Electric/auxiliary transmission fluid pump A has a hydraulic leak, meaning fluid pressure is escaping. The pump moves transmission fluid when the engine is off or at low speed.
Can I keep driving? Shifting may be rough or the car may drop into a limited gear; drive gently, avoid towing, and get it read soon.
Common symptoms
What you'll notice
- 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
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
- 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
Related codes
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