Code : P111D
Make : GMC
Description : P111D GMC Intake Air Temperature Sensor?1 ? Fuel Temperature Sensor?2 Correlation
Possible causes :
– Faulty Intake Air Temperature Sensor 1
– Intake Air Temperature Sensor 1 harness is open or shorted
– Intake Air Temperature Sensor 1 circuit poor electrical connection
– Faulty Fuel Temperature Sensor 2
– Fuel Temperature Sensor 2 harness is open or shorted,
Solutions :
– Carry out a Reset via CarDiag
– Choose a better quality fuel
– Check that the tank cap is securely closed
– Check the oil level and add more if it is lower than MAX
– Restart an Automatic diagnostic via CarDiag
– If the fault persists, you can check the “Possible causes” listed above : visually inspect (by yourself (tutorials to come) or by a professional) the wiring harness and the associated connectors, check for damaged components, and look for broken, bent, pushed, or corroded connector pins.
