P1216 GMC Possible Causes
- Faulty fuel solenoid
- Fuel solenoid harness is open or shorted
- Poor electrical connection in the fuel solenoid circuit
How is GMC Code P1216 Repaired?
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)
P1216 GMC Meaning
With engine speed above 506 RPM, engine coolant temperature (ECT) input above 34°F, system voltage between 10-16V, requested fuel flow greater than 0 mm, the powertrain control module (PCM) detected that the injection pump closing time was less than 0.75 milliseconds.