2000 Toyota Avalon "p0420" Questions

check engine light on;engine codes 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 ...

I have a 2003 Toyota Avalon V6 XLS. The check engine light came on and I got the car scanned. Code P0420 came up. I know the oxygen sensor needs replacing...but I was told there are 3 O2 sensors for ...

O2 sensor and the exhaust stream. http://www.tankota.net/repair/Repair_Manual/03tacoma/di/eg5vzfe/cip0420.pdf P0420: Catalyst System Efficiency Below Threshold ( Bank1)

...Relay "A" Circuit Malfunction P0419 Secondary Air Injection System Relay "B" Circuit Malfunction P0420 Catalyst System Efficiency Below Threshold (Bank #1) P0421 Warm Up Catalyst Efficiency Below ...

have a 20088 fully loaded nissan quest with code p0420 plugs and coils have been replaced already drives fine https://www.fixdapp.com/blog/p0420 https://www.fixdapp.com/blog/p0420 https://mechanicbase

P0420 2003 Toyota Corolla, HELP! FYI more background on a P0420 - http://p0420.com p0420 is a code for catalytic converter efficiency, the cat will need to be replaced. in some instances a software ...

...came on my 2011 Subaru Legacy premium. I connected the computer and got three codes. P020 PRM, P0420 PND, and P0420 CNF. Can you please let me know what they are? P0420 Catalyst System

what is p0420 on a 2006 chevy cobalt 2.2l P0420 is a code for the catalytic converter. It has failed the efficiency test. See this post for the full story on P0420 trouble codes ...

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 ...

Error codes: P0420 AND P0446 1996 Oldsmobile Bravada 4.3 liter. Error code: P0420 and will not pass emissions. Also code: P0446, I realize that the P0420 may be a 02 sensor, but I am looking for ...