2000 GMC Yukon XL "trouble code p0420" Questions

...trouble codes of 171,174, 420 what is my problem Basically this means that an oxygen sensor in bank 2 detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 2 is ...

...https://mechanicbase.com/trouble-code/p0420 Hav cat convertr temp taken..if low u need knew. If oxygen sensor heatn element bad..then u need new too..orhrwise jysta ...

...trouble-code-cylinder-5-misfire-detected-by-jay-safford ...

...trouble code P0420 - Catalyst System Efficiency ... If they have failed, it is likely due to something else that caused it to fail. ... the catalytic converter is broken or failed, it may be ...

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 ...

...code for the catalytic converter. It has failed the efficiency test. See this post for the full story on P0420 trouble codes ...

Trouble Code. Technical Description. Catalyst System Efficiency Below Threshold (Bank 1). What does that mean? This diagnostic trouble code ... P0420 Code Fix How Its Done Catalyst Efficiency Below ..

trouble code P 0420 and P 0304 304 cylinder 4 is misfiring 420 catalyst system efficiency below threshold what the proper fix Needs a cat and need to check the injector and coil. Coil most common on ...

Trouble Code Here's a link to your code. Trouble Code P0420 Catalyst System Efficiency Below Threshold Bank 1 IF YOUR OIL NEEDS CHANGING, TAKE TO DEALER AND LET THEM CHANGE,THEY WILL FIND PROBLEM CODE

...trouble code P0420 may set on low mileage vehicles, or shortly after catalytic converter replacement TSB Number: 3316NHTSA Number: 10017210TSB Date: n/aDate Added to File: October 27, 2005 Failing ...