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 too much electricity going through a part of the motor that helps move the car's transmission fluid around. It's like if you used too much power on a toy motor, it might get too hot or stop working right.
The P0B08 code is triggered when the vehicle's control module detects a high current condition in the W phase of the electric or auxiliary transmission fluid pump motor.
The electric or auxiliary transmission fluid pump is responsible for circulating transmission fluid to ensure proper lubrication and cooling of the transmission components. The motor of this pump operates in different phases, and the W phase is one of them. A high current condition indicates that there may be excessive electrical load or a short circuit in the W phase, which can lead to overheating or failure of the motor.
• Illuminated check engine light
• Transmission overheating
• Reduced transmission performance
• Short circuit in the pump motor
• Faulty transmission fluid pump motor
• Wiring issues such as damaged wires or poor connections
Transmission Fluid: A liquid used to lubricate and cool the components of a vehicle's transmission.
Short Circuit: An electrical fault where current flows along an unintended path, often causing excessive current flow.
• Use an OBD-II scanner to confirm the P0B08 code.
• Inspect the wiring and connections to the transmission fluid pump motor.
• Test the pump motor for proper operation and check for short circuits.
• Repair or replace damaged wiring or connectors.
• Replace the faulty transmission fluid pump motor.
• Clear the code and test drive to ensure the issue is resolved.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $600
Moderate
• Toyota Prius
• Chevrolet Volt
• Ford Fusion Hybrid
• Regular maintenance of transmission system
• Inspect wiring and connectors periodically
• Ensure proper fluid levels and conditions
Electrical Issue
• Avoid driving the vehicle until the issue is resolved to prevent further damage.
• Consult with a professional mechanic for accurate diagnosis and repair.
Check with the vehicle manufacturer for warranty coverage on transmission components.
This code has been associated with hybrid and electric vehicles due to the complexity of their transmission systems.
High – This issue can lead to transmission damage if not addressed promptly.
Driving with a faulty transmission fluid pump can lead to safety issues and should be addressed immediately.
• Vehicle at operating temperature
• Engine running
The electric/auxiliary transmission fluid pump is typically located near the transmission assembly.
Q: Can I drive with a P0B08 code?
A: It's not recommended to drive with this code as it can cause further damage to the transmission.
Q: How do I clear a P0B08 code?
A: After repairs, use an OBD-II scanner to clear the code, but ensure the issue is fixed to prevent it from returning.
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