P0B03: Electric/Auxiliary Transmission Fluid Pump Motor Phase V Current
What to do
As P0B00.
What this code means
The current in phase V of the auxiliary pump motor disagrees with its two siblings.
The letter identifies which of three identical circuits stopped matching, and changes nothing else about the diagnosis. The family's argument is at P0B00; the general three-phase reasoning is at P0A5D.
Likely causes
Start here
- Faulty auxiliary transmission fluid pump · specialist
- Corroded or loose connector · easy
Less common
- Damaged transmission wiring harness · moderate
- Motor winding insulation breakdown · specialist
Symptoms
Components involved
Information, not instruction
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Community experience
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