P0625
PowertrainCharging Systemmoderate severityGenerator Field Terminal Circuit Low
What P0625 Means
The PCM detected a low voltage condition on the generator field terminal circuit. This can reduce or disable proper charging output.
Symptoms
- Battery discharging
- Charge warning light
- Dimming lights
Common Causes
- Short to ground in field circuit
- Faulty alternator
- Damaged wiring
- Faulty PCM
Diagnostic Steps
- Measure field terminal circuit voltage
- Check wiring for shorts to ground
- Test alternator output
- Repair wiring or replace alternator
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