2003 Honda Accord 6-cylinder with P0420 and P0430: Do I Need Two Catalytic Converters and HO2S Sensors Replaced?
Does a P0420 and P0430 diagnostic code on my 2003 Honda Accord 6-cylinder indicate that I need to replace two catalytic converters and two heated oxygen (HO2S) sensors? If so, what is the typical cost range for parts and labor that falls within reasonable expectations?
The P0420 and P0430 codes do indicate your 2003 Honda Accord has two catalytic converters, each with a heated oxygen sensor (HO2S) located behind it. However, replacing both the catalysts and sensors isn