P1222 CADILLAC Possible Causes
- Faulty fuel injector 1
- Fuel injector 1 harness is open or shorted
- Poor electrical connection in fuel injector 1 circuit
How to Fix P1222 CADILLAC Code?
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 soon warning light)
P1222 CADILLAC Meaning
With the engine running, the Powertrain Control Module (PCM) detects incorrect voltage potential on one of the fuel injector driver circuits for less than 500 ms. Additionally, code P0200 will be set if a fault in a component or circuit is detected.