Questions & Answers for: Toyota Celica p0420 code

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 ...

...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 System Efficiency Below Threshold ...

...have a intermittent short i have a toyota celicea gt, the check engine light turn on. the code is ...

...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 catalytic converter. It is ...

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.

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 upstream

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