Hi guys

I have resigned myself to saving up for the Swirl Flap modification kit (Z22YH engine). Now I am wondering if it is a
faulty sensor making the ECU think there is a fault???

Whereabouts would the sensor be located in the engine bay and would anyone know if there is a GM part number??? This could be a cheaper option to change the sensor before going ahead with the modified kit.

The reason why I think it could just be the sensor is because the emission light only comes on intermittently, quite a few times I have started the car and light has been out but then comes on about 5 mins down the road.

Obviously, if I change the sensor, clear the P1112 fault code and then the light still comes on then I will have no choice but to install the modified Swirl Flap kit