Question about 2000 Jaguar S-Type
How can affect the car if "Catalyst System Efficiency Below threshold (Bank1) P0420" message appears on the Smog test shop computer, after a Check system light turn ON.
The light was ON after it passed the test.
This message is displayed to let you know that the catalyst is not performing to standards as outlined by manufacturer. this can be caused by the precious metals in the catalytic converter breaking down due to a possible lean condition or overfueling. this can also be caused by normal wear and tear too. hope this info helps!!
Posted on Sep 04, 2009
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Posted on Jan 02, 2017
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