P1201 GMC Possible Causes
- Faulty mass air flow sensor
- Mass air flow sensor harness is open or shorted
- Poor electrical connection in mass air flow sensor circuit
How is GMC P1201 Code Repair Done?
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 service engine soon warning light)
P1201 GMC Meaning
Mass Air Flow Sensor Circuit Range/Performance is the generic description for GMC P1201 code, but the manufacturer may have a different description for your vehicle model and year. Currently, we don’t have more information about the GMC P1201 OBDII code.