So the light came back on for P0420 22,000 miles after new installed cat. I reset and about 1,000 miles later comes back on.
Could it be the downstream O2 sensor, also getting P1450, would that be related somehow?
Trying to get insight before going back to the mechanic.
Could it be the downstream O2 sensor, also getting P1450, would that be related somehow?
Trying to get insight before going back to the mechanic.