dbear134 Posted September 25, 2012 Share Posted September 25, 2012 ok my car rhas thrown up an error P0420 cat not running efficiently Below threshold B1 ...exhausts seem ok MIL now reset does a cat cleaner help or would it be of no use a bit reluctant to spend £400 + on a fault thats not critical any advise ?? Link to comment Share on other sites More sharing options...
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