P1222 GMC, CHEVROLET, CADILLAC, BUICK: INJECTOR CONTROL CIRCUIT 1 INTERMITTENT
POST UPDATED IN January, 2023
P1222 GMC, CHEVROLET, CADILLAC, BUICK: INJECTOR CONTROL CIRCUIT 1 INTERMITTENT
In modern vehicle engines, fuel injection is controlled electronically. An electronic magnet is activated to drive a spring that accesses or limits fuel delivery.
The cylinders in turn receive the fuel directly in the compression process. However, in some systems, the fuel together with air is premixed in the intake stroke.
The P1222 OBDII fault code is a code that brands such as GMC, Chevrolet, Cadillac, and Buick use to indicate that the Powertrain Control Module (PCM) detected an incorrect voltage potential in one of the injector drive circuits while the engine was running. This code is usually accompanied by DTC P0200 if a component or circuit failure is found.
The P1222 OBD2 diagnostic code is set by one of the following factors:
To troubleshoot the DTC P1222 OBDII code you must do the following: