Code result
P2E31
Battery Charger B Module Supply Voltage High
High severity
What it means
The supply voltage to battery charger B control module is high. Charger may not start or operate reliably.
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
Alternator overvoltage
highOne of the most commonly reported causes for this code — check this first.
Wire shorted to B+
mediumA plausible cause — test and verify before replacing parts.
Related help
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