Question about 2001 Honda Odyssey
2001 Honda Odyssey van with 123k miles. Had a shop put in a new, generic replacement sensor for Bank 1. Diagnostic code P0420 indicates catalyst system efficiency below threshold bank 1.
Any ideas on how to get this to clear. The shop I had do this tried to disconnect battery but no luck. I have tried revving the engine then drive for 10 min at highway speed, etc as one tech note suggested. But still no luck. This has been happening now for 5 months.
HI .YOU NEED TO REPLACE THE CATAYST ON BACK 1. ONLY THE REAR CATALYTC OK
Posted on Apr 17, 2009
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Posted on Jan 02, 2017
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