Check engine light still on


Asked by Aug 18, 2016 at 07:58 PM about the 2002 Dodge Durango SXT 4WD

Question type: Maintenance & Repair

So I keep getting 4 code a p 0031 p 0037 and p
Replaced both 02 sensors but still stays on frond
one of the wires burnt thru on the exhaust.
Soni just replaced them both but won't go off I'm
wondering if it took out the pcm and if so how do
you know.

2 Answers


Double check the upstream HEGO (heated exhaust gas oxygen) sensor connector and wiring make sure its intact. connect to the j1962 port OBDII and read freeze frame info on the PCM (computer) next erase codes. run the vehicle and check codes again.


do not unplug the pcm. this can cause the abs module to lose its programming and will need to be reprogrammed if lost. as Auto_centric said check the wires and connectors the oxygen sensors plug into. if they seem fine try and test the sensors. cause a vacuum leak and make sure they respond, do the same with something flammable like propane and make sure they respond. If you see no change then they either aren't up to temp, check oxygen sensor heater fuses, or the new oxygen sensor is defective.

Your Answer

Add photo

Related Questions

  • check engine light 2 answers

    Check engine light came on and was flashing while driving. I've had spark plugs replaced and coils (?) Or cylinders. Shift solenoid replaced also. I want to trade it in but can't right now cause I'...

    2007 Dodge Durango


    Maintenance & Repair

  • Check engine light 3 answers

    My check engine light came on and my friend told to check the oil and stuff and everything was fine so I scan it with my obd2 it game p0420 and so early today I unplug my battery to some stuff and ...

    1999 Dodge Durango 4 Dr SLT 4WD SUV


    Maintenance & Repair

  • had check engine light checked ,it came up with 3 ####-vo184,vo156,poo38 1 answer

    my check engine light came on after running my air condition and a whinning noise was coming and after running it ,it would stop.

    2005 Dodge Durango SLT


    Maintenance & Repair

  • 99 Dodge Durango check engine light on, doesn't start sometimes 1 answer

    My Durangos check engine light will come on sometimes and when it does amd I kill the engine, it won't start up until the engine cools off. And sometimes it won't stay started unless I keep my foo...

    1999 Dodge Durango 4 Dr SLT SUV


    Maintenance & Repair

  • What does it mean when the check engine light is on but has no code? 3 answers

    My check engine light came on after having to use my spare which is a 17 instead of a 20 in tire. I thought it was because it wasnt finding the TPMS from the original tire, But I have fixed the tire a...

    2007 Dodge Durango Limited


    Maintenance & Repair

Search Dodge Durango Questions

Dodge Durango Experts

#1 Sigurður Guðmundsson
Sigurður Guðmundsson
Reputation 2,300
#2 Breanskis
Reputation 1,320
#3 tenspeed
Reputation 680
View All

Related Models For Sale

Used Jeep Grand Cherokee"
1,231 Great Deals out of 74,214 listings starting at $1,500
Used Ford Explorer"
1,396 Great Deals out of 72,124 listings starting at $300
Used Chevrolet Tahoe"
1,160 Great Deals out of 36,620 listings starting at $1,995
Used Dodge Ram 1500"
532 Great Deals out of 13,943 listings starting at $995
Used Toyota 4Runner"
362 Great Deals out of 18,989 listings starting at $2,400
Used Ford Expedition"
595 Great Deals out of 21,558 listings starting at $2,111
Used Honda Pilot"
577 Great Deals out of 19,670 listings starting at $1,800
Used GMC Yukon"
566 Great Deals out of 14,734 listings starting at $1,500
Used Toyota Highlander"
662 Great Deals out of 31,097 listings starting at $1,990
Used Ford F-150"
3,287 Great Deals out of 217,270 listings starting at $1,000

Used Cars For Sale

2017 Dodge Durango For Sale
9,175 listings starting at $25,562
2016 Dodge Durango For Sale
27 Great Deals out of 3,233 listings starting at $25,998
2015 Dodge Durango For Sale
79 Great Deals out of 2,095 listings starting at $22,000
2014 Dodge Durango For Sale
51 Great Deals out of 1,259 listings starting at $14,991
2013 Dodge Durango For Sale
94 Great Deals out of 1,702 listings starting at $12,500