How to Fix P1109 CADILLAC Code?
Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
Check Engine Light On (or Service Engine Soon Warning Light)
P1109 CADILLAC Meaning
The Secondary Port Throttle System is the generic description for the Cadillac P1109 code, but the manufacturer may have a different description for your vehicle model and year. Currently, we do not have more information about the Cadillac OBDII P1109 code.