P1ABB GMC - Starter/Generator Field Coil Current Sensor Overcurrent
- Faulty Motor Generator Unit (MGU)
- Motor Generator Unit (MGU) harness is open or shorted
- Motor Generator Unit (MGU) circuit poor electrical connection
- Engine Light ON (or Service Engine Soon Warning Light)
P1abb Gmc DescriptionThe Starter/Generator Control Module (SGCM) monitors the Motor Generator Unit (MGU) field coil circuit to see if the field coil current is within tolerance.
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