2002 C240 - P0422 Error Code?
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2002 C240
2002 C240 - P0422 Error Code?
Hi Everyone,
I have been getting the CEL and code - P0422 Main Catalyst Efficiency Below Threshold Bank 1. It comes and goes and sometimes stays off for days when I erase it. However, it always comes back. From what I have read, I probably need new oxygen sensors. Does that sound right? if so, which ones do I replace.
Thanks again for all the help.
I have been getting the CEL and code - P0422 Main Catalyst Efficiency Below Threshold Bank 1. It comes and goes and sometimes stays off for days when I erase it. However, it always comes back. From what I have read, I probably need new oxygen sensors. Does that sound right? if so, which ones do I replace.
Thanks again for all the help.
