Code result
P065B
Generator A Control Circuit Range or Performance
Moderate severity
What it means
The PWM control line to the alternator A regulator does not deliver the expected charging response - high contact resistance, regulator drift, or wrong calibration.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Regulator response drifted
highOne of the most commonly reported causes for this code — check this first.
Related help
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