Sensor o2 oxygen p0420 bank p0140 circuit sensors code catalyst clean efficiency below system threshold catalytic converter ho2s low heater P0043 code: ho2s heater control circuit low (bank 1 sensor 3) P0420 code check engine light audiworld bank threshold efficiency catalyst below system
Check Engine Light - Code P0420 - AudiWorld Forums
Check engine light
Check Engine Light - Code P0420 - AudiWorld Forums
P0043 Code: HO2S Heater Control Circuit Low (Bank 1 Sensor 3) - In The