Code result
P0625
Generator Field Terminal Circuit Low
Moderate severity
What it means
Voltage on the alternator F terminal (field excitation) is below threshold — open or short to ground in the excitation path.
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
Field circuit open or shorted to ground
highOne of the most commonly reported causes for this code — check this first.
Alternator brushes worn
mediumA plausible cause — test and verify before replacing parts.
Connector pins corroded - high contact resistance
lowLess common, but worth ruling out after the more likely causes.
Related help
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