Question 1 of 1

Technician A and Technician B are discussing the troubleshooting procedure for a P0420 DTC. Technician A says that the presence of any other codes should be considered first before replacing the converter. Technician B says that an air leak in the exhaust upstream from the converter could cause the code to set. Who is correct?

Technician A

Technician B

Both technician A and B
Neither technician A or B