2005 Nissan Altima "code p0420" Questions

2002 Nissan Altima P0720, P1574, P0420 I have a 2002 Nissan Altima. Can anyone tell me what these codes are? And how to fix them? P0720, P1574, P0420. Please? I have a 2002 Nissan Altima. Can anyone ...

code p0420 on my 2005 altima 2.5 s i have an 2005 Nissan Altima that is giving me an check engine error and i have taken it to a auto zone and gave me an engine code of P0420, can someone tell me what

what are codes P0720, p1574, p0420? 2002 Nissan Altima p0720-- auto. trans. vehicle speed sensor (revolution sensor) p1574--automatic speed control device/vehicle speed sensor p0420--two way catalyst ...

what does the code p0420 mean? P0420....Catalyst System Efficiency Below Threshold (Bank 1)

...p0420 code is for catalyst efficiency below threshold, basically, your catalytic converter is bad and may need to be replaced. Sometimes repairing the random missfire can eventually clear the p0420 ...

...P0420 Code I have a 2000 Nissan Altima with aprox 136k miles. Friday I put gas in my car. 3 days later the check engine light came on. Checked fluids, gas cap (seemed tight at the time), oil, ...

code p0420 I just bought a used 2005 Nissan Altima on Tuesday. Yesterday which was Friday my service engine light came on. Is there anyway I can find the problem without spending a lot of money. Could

...code p0420. catalyst system efficiency below threshold. probable cause; large vaccum leak, fuel system fault, ignition system fault, or failed bank 1 catalytic converter. i put a new catalytic ...

...code P0420 SES came on today. Autozone says code is P0420. Does this ALWAYS mean the catalytic convertor much be replaced? 137K miles. No O2 sesnors have ever been replaced. code p0420 refers to the ...

...Code reads p0420? Is it a sensor or something else? HI. This is a sign of a catalytic converter that is not working as efficiently as it should be. It is part of the vehicle emissions system. The ...