P1222 GMC, CHEVROLET, CADILLAC, BUICK: INJECTOR CONTROL CIRCUIT 1 INTERMITTENT
Description of DTC code P1222
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 thePowertrain 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.