2001 Diamante P0421 code, need to know which sensor and any other advice
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2001 Diamante P0421 code, need to know which sensor and any other advice
I have a 2001 Diamante and keep getting a CEL P0421 Bank 1 Warm-up efficiency. searched internet and can not find an exhaust diagram so i can figure out which 02 sensor i should replace first. Tried Cat-a-clean, octane boost, had fuel system cleaned, nothing yet has worked.
was gonna replace spark plugs, but that seems to be a pain, probably will anyway, but if i am tearing that much apart, might as well change suspect o2 while i am at it.
anyone tackle this problem? what did you do?
was gonna replace spark plugs, but that seems to be a pain, probably will anyway, but if i am tearing that much apart, might as well change suspect o2 while i am at it.
anyone tackle this problem? what did you do?
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1998blackgst 240
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Apr 12, 2005 12:56 PM
