Question about 2004 Jeep Grand Cherokee

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Eng.lightis on code#p0031.

I CHANGE THE02SENSORS ON MY 04 JEEP GCKEE.
BUT THECHECK ENG,LIGHT KEEPS ON..

code p0031


I



















CHANGE THE O2 SENSORS ON MY 04 JEEP GCKEE

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  • jorgerami621 Sep 15, 2009

    it didnot work.also chk wires connections, r ok.

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  • Master
  • 986 Answers

Have you diconnected the battery for 20 min to reset the puter?

Posted on Sep 11, 2009

  • Roger Campbell
    Roger Campbell Sep 15, 2009

    If the connectors are indeed good, O2 sensors are new, and the battery trick didnt reset the code. Your CPU needs to be re-flashed at the dealer.

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1 Answer

What are the probable causes of DTCs P0031, P0603, and P1148?


Clean out you idle air bypass valve with carb cleaner. P0031 air/fuel sensor 1 heater (B1)bank 1, p0603 engine control back up circuit,p1148 closed loop B1. Broken heater in upper O2 sensor is one if not all of your problems. Replace all of your O2 sensors & reset engine light.

Sep 01, 2015 | 2012 Nissan Altima 2.5 Sedan 2.5L 4-cyl....

1 Answer

2003 Lexus GS300 P0031 code


Yes the O2 sensor preheater problem will turn on the VSC light, see the complaint often, why? don't know
.P0031 TOYOTA - Oxygen Sensor Heater Control Circuit Low Bank 1 Sensor 1
In most cases the O2 being replaced cures the code but here is the full story.
Possible causes- Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit open shorted to ground
- Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit poor electrical connection
- Faulty Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit
- Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit fuse
- Faulty Engine Control Module (ECM)

Jun 16, 2012 | 2003 Lexus Gs 300

1 Answer

I have a code of P0135 and P0030 are these oxygen sensor in a 06 saab 9x-7


The code P0135 is a fault code for the o2 sensor before the catalytic converter.Replace the o2 sensor and then reset the computer and it should be fine afterwards.The check engine light should stay off then.

Dec 31, 2011 | 2006 Saab 9-7X

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

Service engine light came on and has displayed code P0031 and P0041. What could be the problem?


P0031 is HO2S Heater Control Circuit Low Bank 1 Sensor 1 P0041 is O2 Sensor Signals Swapped Bank 1 Sensor 2/ Bank 2 Sensor 2

Jan 14, 2011 | 1994 Cadillac DeVille

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

2 Answers

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

Sep 18, 2009 | 2001 Mazda MPV

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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