Chevrolet P1021: CNG Fuel Injector 1 Circuit Malfunction
Is your scanner showing Chevrolet P1021?
No worries. We'll show you what it means and how to deal with it.
Chevrolet P1021: CNG Fuel Injector 1 Circuit Malfunction
OVERVIEWWhat Does The Chevrolet P1021 Code Mean?
Engine started, system voltage from 6-18v, and the FICM detected an incorrect voltage condition on the circuit that controls the CNG Fuel Injector 1 operation during the CCM test.
What Are The Potential Causes Of The Chevrolet P1021 Code?
- CNG fuel injector 1 control circuit is open or shorted to ground
- CNG fuel injector 1 is damaged or it has failed
- FICM has failed
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
Chevrolet P1021, DTCDECODE.
