Question about 2002 Pontiac Grand Prix
WHAT IS PO420
PO420 code has to do with the oxagen sensors, But allso can be triggered if there is a leak in the (Exuast) System some where, If the (Exuast) System is good ,Problem is with a oxagen sensor, If not replaced it can do damage to the cat (Converter) That is verry costly to have replaced,
Posted on Nov 02, 2012
Testimonial: "BEFORE I BRING MY CAR TO FIX , HOW LONG IS SAFE FOR ME TO DRIVE CAR , ALSO TEST TELL ME IS CATALYTIC CONVERTER SO PLEASE TELL SOME MECHANIC IS CLOSED DURING WEATHER SO MOST TOWN WITHOUT POWER, BUT I LIKE TO KNOW CAN I DRIVE CAR WITH THIS PROBLEM TILL I GET NEXT WEEK SOMEBODY IN SHOP. HOW MUCH IS SAFE AND IS THERE DANGER TO DRIVE AND WHAT MOST IS IMPORTANT TO WATCH . THANK YOU ENRA.."
As long as you do not keep driving the car for the next six months...these problens will not overnight damage your car...however it needs to be checked and fixed ASAP...
Posted on Aug 10, 2014
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Posted on Jan 02, 2017
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