Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)

P1109 Description

IAT – B Sensor Intermittent is one of the definitions for the P1109; however your vehicle’s manufacturer may have a different definition for the P1109 code. Please check below for your specific make.

P1109 Information for specific makes

P1109 BUICK
P1109 CADILLAC
P1109 CHEVROLET
P1109 FORD
P1109 GMC
P1109 HYUNDAI
P1109 ACURA
P1109 HONDA
P1109 AUDI
P1109 VOLKSWAGEN