Re: DTC P0403
I hooked it up and it says P0403 Catalyst System Efficiency Below Threshold (Bank 2). I don't have cats, I never had since I have bought the car, never had this code. O2 Sensors are working. What else do I need to check?
Bassani Off-road X-pipe, Magnaflow Catback, BOMZ Racing CAI, Smoked Tail lights, Black Projector Headlights