P1031 / SAAB

Injector 3 Low Output

Notes:

P1031 / CHEVROLET

HO2S Heater Current Monitor Control Circuit Banks 1 and 2 Sensor 1

Notes:

P1031 / CADILLAC

HO2S Heater Current Monitor Control Circuit Sensors 1

Notes:

P1031 / BUICK

HO2S Heater Current Monitor Control Circuit Sensors 1

Notes: