Code result
P277D
Electric/Auxiliary Transmission Fluid Pump B Motor Over Temperature
High severity
What it means
The second auxiliary transmission fluid pump motor has reached over-temperature. Sustained high duty or insufficient cooling.
Is it safe to drive?
No — stop driving
This code points to a problem that can cause damage or affect safety. Avoid driving and have the vehicle diagnosed promptly.
Most likely causes
Sustained high duty cycle
highOne of the most commonly reported causes for this code — check this first.
Cooling air or fluid path blocked
mediumA plausible cause — test and verify before replacing parts.
Related help
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