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P0031 code check engine is on P0031 AND P0051

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Posted on Jan 02, 2017

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SOURCE: I am getting a P0031, P1512, & P0421 code

P0031 - most likely pointing to a failed O2 sensor (bank 1 sensor 1 is located before the catalytic converter)

P0421 - failed catalytic converter or a failed O2 sensor

P1512 - intake manifold shutter valve is stuck - may be caused by the O2 sensor, but may not

I recommend replacing your O2 sensor first and see what happens

Posted on Sep 18, 2009

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SOURCE: I have a 2002 Mazda Protege and have error code

bank 1 before cat

Posted on Jan 17, 2010

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2005 Dodge Magnum R/T suddenly put out codes P0031, P0037, P0051, P0057.Where do I start looking?


http://www.autocodes.com/popular_codes_make.php?make=DODGE, try to look up the codes under the autocodes.com, this site can help you find the code and give you help to fix it, also look for the ground wires and they are grounded to the engine and body

Dec 13, 2016 | Dodge Cars & Trucks

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2002 dodge durango was codes po031 ,po051, po131, po151, po132 & po748 I already changed all o2s


P0031 and P0051 02 heater control, P0131, P0151 and P0132 02 voltage P0748 pressure control solenoid a electric. Your 02 sensors not problem, problem is electric in nature

Apr 07, 2015 | Dodge Cars & Trucks

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What is purpose of sensor with code p0051


Hi, it could be possible that the thermostat is faulty. Replacement of this part is necessary. Hope this solves the heating problem.

Jun 07, 2014 | 2002 Jeep Liberty

1 Answer

All 4 O2 sensors failed at same time


No that is not possible. You either have lost power or ground to sensors or the system has a fuel control issue.

Nov 04, 2013 | 2004 Nissan Pathfinder

1 Answer

Just replaced all 4 o2 sensors and it is still giving me these codes... p0031 p0202 p0051 p0302 p0136


Check the air flow metre on the air box and all connections on the O2 sensors

Jul 30, 2011 | 2004 Jeep Grand Cherokee

1 Answer

I have a 04 sequoia and the codes p0031 and p0051 are coming up. How do I fix this?


Trouble code P0031 means: Oxygen Sensor Heater Control Circuit Low - Bank 1 Sensor 1 .
Error code p0051:replace O2 sensor ($75-150 depending if OEM) before catalytic converter. need O2 socket ($10) to get at and tough to get to if vehicle isn't at least on a ramp.

Nov 22, 2009 | 2004 Toyota Sequoia

1 Answer

05 COROLLA P0031


What does that mean? A P0031 DTC (diagnostic trouble code) refers to the O2 sensor (oxygen sensor) located on Bank 1 in front of the catalytic converter. There is also an oxygen sensor behind the converter which is Sensor #2.
This O2 sensor #1 may also be refered to as an air/fuel ratio sensor since on some vehicles it is. It detects the amount of oxygen in the exhaust gas compared to the outside air and then vehicle's computer adjusts the air/fuel ratio going into the engine. The sensor is less effective when the exhaust gas temperature is low, so it includes a heater which is activated to help get better readings from the A/F O2 sensor. Essentially this P0031 code means that the resistance of the heater circuit is lower than normal. In most cases, that resistance level must fall below 0.8 A to trigger the DTC code.
Note, this code is very similar in nature to P0032, P0051, and P0052

Potential Symptoms Most likely you'll not notice any symptoms other than the MIL (malfunction indicator lamp, a.k.a. the check engine light) will illuminate.
Causes A P0031 DTC trouble code may be caused by one or more of the following:
  • A short or open in the heater circuit in the sensor
  • A failed O2 sensor heater
  • Wiring/connectors broken/frayed leading to sensor and/or relay
  • Failed PCM/ECM
Possible Solutions Need an O2 Sensor? Visit our O2 Sensor shopping area for the lowest price on your replacement sensor!
To fix a P0031 DTC code, you'll need to do a proper diagnosis. To do that, you'll want to inspect the wiring and connectors leading to the sensor. Also if equipped with a heater relay and fuse, you'll want to check those as well. Use a digital volt ohm meter to:
  • check for 12 volts at the heater circuit feed (hint: unplug the sensor and check at the wiring connector to do this measurement)
  • check the ground circuit for continuity
  • measure the resistance of the heater circuit (done on the sensor itself)
  • measure the resistance and voltage of the wiring
Refer to a service manual for the correct specifications (volts, ohms) for your vehicle. On some Toyota vehicles this code is triggered when the resistance of the heater circuit is below 0.8 A.
With that said, a common fix for this DTC is to replace the air/fuel (O2 oxygen) sensor #1 on bank 1.
Please keep in mind that OEM (original equipment) replacement sensors are recommended (from the dealer). Aftermarket sensors can be less reliable and of poorer quality (not always, but more often). There's also a chance that replacement parts for the P0031 code may also fall under a federal emissions warranty (check with your dealer to see if it's covered).

Aug 20, 2009 | 2006 Toyota Corolla

1 Answer

Have code of P0031,P0037,P0051,P0057 on a 2005 jeep wrangler


these codes are o2 sensor related need to get dealership to check out

Jun 03, 2009 | 2005 Jeep Wrangler

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