P0B08
Electric/Auxiliary Transmission Fluid Pump Motor Phase W Current High
The phase W current of the auxiliary transmission fluid pump motor reports a current high fault. Pump phase commutation impaired.
The phase W current of the auxiliary transmission fluid pump motor reports a current high fault. Pump phase commutation impaired.
Common causes
- high
Short between motor phases
One of the most commonly reported causes for this code — check this first.
Typical part cost: $550-2750
- medium
Rotor stalled
A plausible cause — test and verify before replacing parts.
Typical part cost: $550-2750
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does P0B08 mean?
P0B08 means "Electric/Auxiliary Transmission Fluid Pump Motor Phase W Current High". It is a generic OBD-II code that points to a fault in the hybrid / ev powertrain.
What are the most common causes of P0B08?
short between motor phases; rotor stalled — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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