P1215 GMC Possible Causes
- Faulty generator driver
- Generator driver circuit is open or shorted
- Poor electrical connection in the generator control circuit
How to Fix GMC Code P1215?
Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
- Engine light on (or engine service warning light soon)
P1215 GMC Meaning
With the engine running, the Powertrain Control Module (PCM) determines that the generator FET driver has failed.