Questions & Answers for: auto code p0420

...Code PO420 Had local auto parts store scan code and they came up with PO420. I just bought this car. Seem to run good. Have the 2000 Miata had any problem areas that you know of that would cause this ...

...p0420 and p0773 2000 avalon xls;150k mi.;codes pulled by auto zone;only notable performance difference is lower gas milage. I looked up the codes you posted. P0420 is showing a bad oxygen sensor on ...

...p0420? 2002 Nissan Altima p0720-- auto. trans. vehicle speed sensor (revolution sensor) p1574--automatic speed control device/vehicle speed sensor p0420--two way catalyst system bank 1 where is this ...

...1-1 Hello: If you have code P0420 you will have to replace the catalytic converter then get auto parts store to clear code. A aftermarket converter is much cheaper. This part is in the exhaust

...AUTO ZONE THE CODE INDICATED WAS P0420. VEHICLE ISN'T MISFIRING OR RUNNING BAD. P0420 isnt a misfiring code; this code P0420 is refer at Catalyst System Efficiency Below Threshold (Bank 1). Feel ...

...Grand Am. What does the code mean? Go to Advance Auto.  They have free troubleshooting of engine codes.  The techs there can give you a list of causes for the code based on your

...code is, as it relates to your vehicle, you should take it to a local auto-part store (like AutoZone and have them pull the codes off of your vehicle. At auto part stores, they generally do this ...

...by advance auto and he stated that here is the number P0420 P0420 is a specific code for the catalytic converter, if there are no other codes the converters should be replaced, there are two of ...

...code P0420 Catalyst efficiency below ... mechanics.stackexchange.com/.../check-engine-code-p0420-catalyst-efficie... Feedback P0420 Error Code: Catalyst System Efficiency Below ... ...

2013 Lincoln MKZ with a p0420 code several times how do I fix it How to fix Code P0420 Ricks Free Auto Repair Advice