Questions & Answers for: Volvo S60 p0420

TROUBLE CODE P0420 CHECK ENGINE CAME AND I HAD IT CHECKED AT AUTO ZONE THE CODE INDICATED WAS P0420. VEHICLE ISN'T MISFIRING OR RUNNING BAD. P0420 isnt a misfiring code; this code P0420 is refer ...

2005 hyundai elantra engiine code P0420, runs good can not pass smog P0420 - Catalyst System Efficiency Below Threshold (worn out cat.)Possible causes- Three way catalyst converter Bank 1 - Exhaust ...