Code result
P277B
Electric/Auxiliary Transmission Fluid Pump B Driver Circuit Performance
High severity
What it means
The driver stage for the second auxiliary transmission fluid pump does not respond to commands within tolerance.
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
Aged driver shows degraded switching behaviour
mediumA plausible cause — test and verify before replacing parts.
Current feedback loop noisy
mediumA plausible cause — test and verify before replacing parts.
Related help
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