Symptoms

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

P1138 Description

Lack Of HO2S12 Switch – Sensor Indicates Rich is one of the definitions for the P1138; however your vehicle’s manufacturer may have a different definition for the P1138 code. Please check below for your specific make.

P1138 Information for specific makes

P1138 BUICK
P1138 CADILLAC
P1138 CHEVROLET
P1138 FORD
P1138 GMC
P1138 NISSAN
P1138 INFINITI
P1138 AUDI
P1138 VOLKSWAGEN
P1138 ISUZU
P1138 MAZDA
P1138 BMW
P1138 SUZUKI