PO420 weak catalyst.
denise_d_d
03-17-2006, 01:18 PM
Yesterday I notice the "check engine" light light up, so I brought my 97 crown victoria to auto zone he rana diagnostic test on it and it showed up "PO420" weak catalyst? does this mean that i need to replace it or will the mechanic fix it or is it even the catalyst. I just bought the car 3 weeks ago... is this an exepnsive problem? please help!
elow5x
03-17-2006, 01:47 PM
Yesterday I notice the "check engine" light light up, so I brought my 97 crown victoria to auto zone he rana diagnostic test on it and it showed up "PO420" weak catalyst? does this mean that i need to replace it or will the mechanic fix it or is it even the catalyst. I just bought the car 3 weeks ago... is this an exepnsive problem? please help!
Have same year CV. P0420 code was coming on intermittently for about a year. I would turn it off with my scan tool and it would stay off for anywhere from a day to a couple of weeks. its supposed to indicate a problem with the oxygen sensors or the catalytic converter but really could me any of a dozen things. I recently had a leaky intake manifold fixed and have not had the PO420 check engine malfunction code since.
elow5x:2cents:
Have same year CV. P0420 code was coming on intermittently for about a year. I would turn it off with my scan tool and it would stay off for anywhere from a day to a couple of weeks. its supposed to indicate a problem with the oxygen sensors or the catalytic converter but really could me any of a dozen things. I recently had a leaky intake manifold fixed and have not had the PO420 check engine malfunction code since.
elow5x:2cents:
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