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Code came up: P0431

Running hot and just cut off.

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Well the code is not for what you described.
Code 431 is the O2 sensors telling the computer the catalytic converter is not working correctly.
Have you checked the radiator and is the cooling fan working ?
Is the thermostat opening at 195 degrees ?

Posted on Jan 21, 2013

Testimonial: "Thank you. we just put in a thermostat and that must be whats wrong. The radiator was suddenly empty."

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My 2004 mazda 6 (wagon) is shakingand lunging forward. it was lunging while in drive and shakes like it will cut off, previous codes before this: P0022/P0345/P0431


P0022 A Camshaft Position - Timing Over-Retarded (Bank 2)
P0345 Camshaft Position Sensor circuit malfunction
P0431 Warm-up Catalyst system below efficiency

A bad camshaft sensor or wiring to the the sensor would cause the other two codes. Since P0345 refers to a circuit issue, get the wiring diagram and check the circuit before assuming you have a bad sensor. If the circuit checks out, then consider replacing the sensor. After that, clear the codes and drive to see if they come back.

Sep 23, 2017 | Mazda Cars & Trucks

1 Answer

Trouble code: p0431 on 2004 hyundai santa fe 3.5L. Wondering about possible solutions


p0431 is described as "warm up catalyst efficiency below threshold (bank 2)" This code is in the exhaust system air injection section of the trouble codes. Possible it relates to an oxygen sensor reading.

Dec 29, 2012 | 2004 Hyundai Santa Fe

1 Answer

Kia p0431, p0446, p0715


They are three separate issues.
Code 431 involves the O2 sensors and the catalytic converter, code 446 is for the evap vent control for the gas tank, and code 715 is for the input shaft speed sensor in the transaxle.
The engine temp and other factors would need to be checked for code 431, and the sensors would need to be tested for the other two codes.

Aug 11, 2012 | 2002 Kia Sedona

1 Answer

Have a code p0431 on a passat 4motion


P0431 Warm Up Catalyst Efficiency Below Threshold Bank 2
The word Catalyst, means that the catalytic converter needs to be replaced because some of the warm up catalyst is not working initially when the car first starts up before it warms up.

Good luck on this repair.

Nov 12, 2010 | 2002 Volkswagen Passat

1 Answer

2005 (4CYL) Mitsubishi Galant. P0431


BANK 2 IS O2 SENSOR NEAR THE CATALYTIC CONVERTER.

Apr 29, 2010 | 2005 Mitsubishi Galant

1 Answer

What is code p0431


cat convert getting too hot

Feb 11, 2010 | 2003 Hyundai Santa Fe

1 Answer

P0431 code on audi allroad 02


Typcally caused by one of the front oxygen sensors or a bad ground associated with these sensors.Replace both front sensors with direct fit type NOT universal, because there may be a cracked wire and the universal sensor does not contain the complete wire harness. Direct fits, are about $20 more than universal fit type.

The O2 sensors have integrated heating elements that bring them up to the proper operating temperature. Code P0431 indicates that the O2 sensor on your driver side catalytic converter is not reaching the proper operating range. The O2 sensors are usually in the $150 range online.

Nov 25, 2009 | 2003 Audi A6

1 Answer

What are code p0342 and p0431


342 is camshaft position sensor and 431 is your catalytic converter may be getting weak. If this was my car I would do the 342 code and see if the other code for the cat comes back. Tell the shop fix the camshaft sensor. If the sensor is bad your car can still run but its possible you could set a cat code because
of it but on the other hand you cannot set a camshaft code because of a bad cat.

I am a smog tech in California

Aug 10, 2009 | 2005 Chevrolet Aveo

1 Answer

Error code P0431


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

Jun 27, 2009 | 2001 Mazda MPV

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