Questions & Answers for: Toyota Celica p0420

My sons car just failed inspection: P0420 Catalyst System Efficiency Below Threshold (Bank 1) P0505 Idle Control System This is going to be bad, isn't it? may not did the battery or replaced battery ...

I had my car inspected and received P0420 code? what does it mean? P0420 Error Code: Catalyst System Efficiency Below Threshold (Bank 1) Repair information for the OBD-II trouble code P0420 - Catalyst

2000 Celica GT driver door lock My 2000 Celica GT driver door lock is acting up; it sometimes will lock when I press my alarm remote, sometimes it won't. it could be the door lock acuator going bad it

2000 toyota celica fault code p0420 cat efficiency below threshold (bank 1). I have two sensors before and after catalytic converter. Which sensor usaully goes bad first? Neither it probably is the ...

have a P0420 code catalyst system efficiency below threshol-bank 1 It may need a new converter, buy it from the dealer, Aftermarket cats do not work.

have a p0420 code on 2000 celica should i replace o2 sensors or cat The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the ...

I am getting codes po308 p0420 p1300 P0308 Cylinder 8 Misfire DetectedP0420 Catalyst System Efficiency Below Threshold (Bank 1)P1300  Igniter Circuit Malfunction - No. 1.

obd code 0420 P0420 Catalyst System Efficiency Below Threshold (Bank 1)

what does the code P0420 means in a 2003 buick lasaber The P0420 means Catalyst System Efficiency Below Threshold.__________carprog full V4.01

FIX FAULT CODE P0420 FOR TOYOTA CELICA 2004 You need a new cataylitic converter . http://www.autocodes.com/P0420.html