Code result
P0AA1
Hybrid Battery Positive Contactor Circuit
High severity
What it means
BMS detects an electrical fault in the positive HV contactor coil circuit. The contactor connects the battery positive terminal to the high-voltage bus.
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
Contactor coil open
highOne of the most commonly reported causes for this code — check this first.
Wiring fault
mediumA plausible cause — test and verify before replacing parts.
Related help
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