0

Subjects>Auto>Auto Parts

What does engine code P0421 mean?

Anonymous

∙ 14y ago

Updated: 12/8/2022

P0421 code = Warm up catalyst efficiency below threshold, Bank 1

Wiki User

∙ 14y ago

What else can I help you with?

Related Questions

P0421 check engine code on 2001 Mazda 626?

Trouble code P0421 means:Warm up catalyst system efficiency below threshold

What is 1999 Mazda Miata check engine light code P0421?

Trouble code P0421 means: Catalyst Efficiency Below Normal (Bank 1)

Ow do you correct the Check engine light on your 1998 Mazda protage with the code of p0421?

Trouble code P0421 means: Catalyst Efficiency Below Normal (Bank 1)

What is code p0421?

P0421 : Warm up catalyst efficiency below thresh hold bank 1

Mazda Millieum S 2000 emission code P0421?

Trouble code P0421 means: Catalyst Efficiency Below Normal (Bank 1)

Mazda 2001 protege lx P0421 error code?

Trouble code P0421 means:Warm up catalyst system efficiency below threshold

What is OBDII code P0421?

P0421 : Warm up catalyst efficiency below thresh hold bank 1

1998 Mazda 626 p0421?

Trouble code P0421 means: Catalyst Efficiency Below Normal (Bank 1)

What does dtc code p0421 on Mitsubishi montero mean and is this an emergency?

When this code come out may be haven no enough warm up on the catalyst is efficienecy the vehicle has an exhaust leak

What does code p0421 mean on a Hyundai santafe?

I believe 0421 is a catalytic converter inefficiency code which is usually caused by a bad o2 sensor or a bad catalytic converter, but I have also seen fouled plugs and exhaust leaks cause this code.

What is the engine check code P0421 on a 04 Mazda mpv?

PO421 Warmup Catalyst Efficiency Below Threshold Bank 1Possible Causes: Defective spark plugDefective O2 SensorDefective Catalytic Converter

What is code p0421 on audi a6 2002 3.0 bank 1 02 sensor?

Passenger side and after the catalytic converter O2 sensor.

Trending Questions

Who invented biodiesel and when? Alarm remote stopped working. central locking working via the key only and car immobilised. Battery replaced in remote same problem. Volkswagen Golf VR6 1997. Please help. Scorpian 5000 system.? Why you make crank? Why would a 1995 Honda Civic EX 1.6 have no power to the fuel pump if the fuel relay switch has already been changed? Would a bad ignition switch cause the service engine light to come on? What does NAPA 703-1699 radiator cap fit? 97 dodge neon runs fine but smells like it is running rich and the smell is getting into the drivers compartment what would cause it to run rich? What do English call car dashboard? Where is the camshaft position sensor located on a 1997 Chevy C1500? What causes smoke from dipstick on turbo diesel rodeo? What is firing order on engine 4.3L? How big does a subwoofer enclosure for a rockford fosgate rfp 1818 half to be? How much does it cost to replace the fuel pump in a Honda CR-V? Would a poor battery cause the engine management light to come on and put car into low gear mode? What size battery for a 2003 Navigator? What is the gear ratio of 2006 z71 Chevrolet truck? Can you change an Infiniti G35 odometer from kilometers to miles? Switched to an electric fuel pump on a 350 and put a fuel pump block-off plate over the old location what are the torque specs for the 4 bolts holding the plate? What does oil filter no. ph4006 fit promotive? How do you reset tire preasure light?

Resources

Top Categories

Product

Company

Copyright ©2025 Answers.com. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Answers.