Code result
P0B04
Electric/Auxiliary Transmission Fluid Pump Motor Phase V Current Low
High severity
What it means
The phase V current of the auxiliary transmission fluid pump motor reports a current low fault. Pump phase commutation impaired.
Is it safe to drive?
No — stop driving
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.
Most likely causes
Phase winding partially open
highOne of the most commonly reported causes for this code — check this first.
Current sensor offset drifted
mediumA plausible cause — test and verify before replacing parts.
Related help
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