P0625moderate severityPowertrain
Generator Field Terminal Circuit Low
on 2007 Ram 3500 5.9L I6 Cummins · 4WD
What this code 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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P0002
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P0004
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P0005
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P0006
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P0007
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P0008
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P0010
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