Code result
P0CFF
Hybrid/EV Battery Pack Coolant Pump A Stuck/Stalled
High severity
What it means
The HV battery pack coolant pump A is mechanically stuck or has stalled. Battery thermal management severely 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
Pump impeller jammed
highOne of the most commonly reported causes for this code — check this first.
Motor seized
mediumA plausible cause — test and verify before replacing parts.
Pack cell imbalance approaching service threshold
lowLess common, but worth ruling out after the more likely causes.
Related help
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