Code result
P063D
Generator Voltage Sense Circuit A High
Moderate severity
What it means
Same as P063A with the sense voltage above the plausible range.
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
Sense line shorted to supply
highOne of the most commonly reported causes for this code — check this first.
Pack cell imbalance approaching service threshold
lowLess common, but worth ruling out after the more likely causes.
Ground point with elevated resistance
lowLess common, but worth ruling out after the more likely causes.
Related help
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