Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a leak in the part of the car that helps move the transmission fluid around. It's like if a water hose had a hole in it and water was leaking out.
The P0B0C code indicates that there is a hydraulic leak in the electric or auxiliary pump system that circulates transmission fluid.
The electric or auxiliary transmission fluid pump is responsible for maintaining the proper pressure and flow of transmission fluid in vehicles equipped with hybrid or electric drivetrains. A hydraulic leak in this system can lead to inadequate lubrication and cooling of transmission components, potentially causing damage or reduced efficiency.
• Transmission overheating
• Reduced fuel efficiency
• Unusual noises from the transmission
• Damaged or worn seals in the pump
• Cracked or damaged pump housing
• Loose or damaged hydraulic lines
Transmission: A system in a vehicle that transmits power from the engine to the wheels.
Hydraulic: Relating to the movement of liquids through pipes and channels.
• Inspect the transmission fluid pump for visible leaks.
• Check the condition of the seals and gaskets.
• Test the hydraulic lines for pressure loss.
• Replace damaged seals or gaskets.
• Repair or replace the pump housing if cracked.
• Tighten or replace hydraulic lines as needed.
• Hydraulic pressure tester
• Wrench set
• Seal replacement kit
$300 - $800
Moderate
• Toyota Prius
• Chevrolet Volt
• Ford Fusion Hybrid
• Regular maintenance checks
• Timely replacement of worn seals
• Avoiding overloading the vehicle
Hydraulic System Issue
• Have the vehicle inspected by a professional promptly.
• Monitor transmission temperature if possible.
• Avoid heavy towing or loads until repaired.
Check with the vehicle manufacturer for warranty coverage on the transmission system.
This code has been associated with hybrid and electric vehicles as they rely on electric pumps for transmission fluid circulation.
High – Hydraulic leaks can lead to severe transmission damage if not addressed.
Continuing to drive with this issue may lead to further damage and safety risks.
• Vehicle in a safe, stationary position
• Transmission fluid at operating temperature
The electric/auxiliary transmission fluid pump is typically located near the transmission assembly.
Q: Can I drive with a P0B0C code?
A: It's not recommended to drive with this code as it can lead to further damage.
Q: How can I prevent this issue?
A: Regular maintenance and inspections can help catch potential leaks early.
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