My wife's SUV has the same code. Replaced two sensors and the cat already. If you find out what caused it, let me know so I can fix hers.
My wife's SUV has the same code. Replaced two sensors and the cat already. If you find out what caused it, let me know so I can fix hers.
Originally Posted by Echonova
Did you use aftermarket ones?
OEM is the best option, especially on newer vehicles. most aftermarket converters are too small and the materials inside are cheap and generic, most people don't want to here this when the OEM is $500+ but its always better to replace with and OEM converter when u get a P0420. I see customers come through the dealership all the time that went the cheap route but anyways end up returning and spending more money on top of what they just spent at joe blow down the road.
If it was a weld on muffler U might want to check and make sure they didn't install it backwards, I see that allow too lmfao.
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