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P0431 mazda 6 - MAZDA6 Mazda Cars & Trucks

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Http://ww2.justanswer.com/uploads/jettadan1/2010-10-15_230432_p0431.pdf

Posted on Feb 21, 2012

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Posted on Jan 02, 2017

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P0431 code came out


exhaust leak,or bad sensor,even the converter,
look for an exhaust leak first then the sensor next lastly the converter.My bet is on a exhaust leak,even a stuck EGR valve might need cleaning because it shows up as a leak as well.Good luck,Gary

Oct 24, 2013 | 1999 Mazda Millenia

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Which catalystic converter should I focus on if my Mazda millenia has a p0431 code


the front seems to be most likely ..there really is no inexpensive formula other than being safe and replacing both converters ..God Bless

Oct 17, 2013 | Cars & Trucks

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I have 3 codes po431 po103 and po113


P0103 Mass or Volume Air Flow Circuit High Input P0113 Intake Air Temperature Circuit High Input P0431 Warm Up Catalyst Efficiency Below Threshold (Bank 2) A code P0431 may mean that one or more of the following has happened:
  • The catalytic converter is no longer functioning properly
  • An oxygen sensor is not reading (functioning) properly
  • There is an exhaust leak
A code P0113 may mean that one or more of the following has happened:
  • Internally failed IAT sensor
  • Faulty connection at IAT sensor
  • Open in IAT ground circuit or signal circuit
  • Short to voltage in IAT signal circuit or reference circuit
  • IAT harness and/or wiring routed too close to high-voltage wiring (e.g. alternator, spark plugmag-glass_10x10.gif cables, etc.)
  • Faulty PCM (less likely but not impossible)
A code P0103 may mean that one or more of the following has happened:
  • The MAF may be disconnected, or a wiring connection may be bad
  • The MAF sensor may be damaged
  • The vehicle computer may be faulty (very rare)

May 25, 2011 | 2006 Mazda 6

2 Answers

What are codes P1492, P0421 & P0431 on the 2002 Mazda Millenia?


po421 warm up catalyst efficiency below threshhold bank 1, 431 same on bank 2..

Feb 08, 2010 | 2002 Mazda Millenia

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2001 Mazda MPV Error code p0431 makes engine light come on


THAT CODE IS FOR THE BANK 2 OR FRONT CATALITIC CONVERTER ON THE VAN. YOU CAN HAVE THE DEALER REPLACE IT OR A MUFFLER SHOP CAN DO IT. THE CAT IS A PART OF THE FRONT EXHAUST MANIFOLD AND WILL NOT BE CHEEP TO REPLACE.

Jun 27, 2009 | 2001 Mazda MPV

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Error code P0431


P0431 Left Hand Warm-up Catalyst System Efficiency Below Threshold.

Jun 27, 2009 | 2001 Mazda MPV

1 Answer

P0421, P0431


Technically, you can put the car in neutral and press the gas while the car is running, til it reaches 3500 rpm. You don't have to actually have the car on the road while you do this.

Apr 06, 2009 | 1999 Mazda Millenia

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