Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer has detected a problem with the electric motor that helps move the transmission fluid. It's like when a toy car's battery isn't working right, so the car doesn't move well.
The P0B00 code indicates an issue with the current in the 'U' phase of the electric or auxiliary transmission fluid pump motor. This motor helps circulate transmission fluid, which is crucial for the transmission's operation.
The electric or auxiliary transmission fluid pump motor has three phases: U, V, and W. The P0B00 code is triggered when the engine control module (ECM) detects an abnormal current in the 'U' phase of this motor. This can affect the motor's performance and, consequently, the transmission's ability to function properly.
• Transmission may not shift properly
• Warning light on the dashboard
• Reduced fuel efficiency
• Faulty transmission fluid pump motor
• Damaged wiring or connectors in the motor circuit
• Defective control module
ECM: Engine Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the code
• Inspect the wiring and connectors of the transmission fluid pump motor
• Test the motor for proper operation
• Replace the faulty transmission fluid pump motor
• Repair or replace damaged wiring or connectors
• Reprogram or replace the control module if necessary
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $600
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regular maintenance of the transmission system
• Periodic inspection of electrical connections
• Promptly address any warning lights on the dashboard
Sensor Issue
• Do not ignore warning lights on the dashboard
• Schedule regular maintenance checks
• Consult a professional mechanic if unsure about repairs
Check with your vehicle manufacturer for specific warranty coverage related to the transmission system.
This code has become more common with the increase in hybrid and electric vehicles, which rely more on electric components for their operation.
Moderate – While the vehicle may still operate, ignoring this issue can lead to more severe transmission problems.
Driving with a faulty transmission can be unsafe. Address this issue promptly to ensure vehicle safety.
• Vehicle ignition in the 'On' position
• Transmission system engaged
The electric transmission fluid pump motor is typically located near the transmission assembly.
Q: Can I drive my car with a P0B00 code?
A: It's not recommended to drive for long periods with this code, as it can lead to further transmission issues.
Q: Will clearing the code fix the problem?
A: Clearing the code may temporarily remove the warning light, but it won't fix the underlying issue.
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