P0139 Becomes P0141 after new Denso Downstream sensor replacement

Asked by Jul 26, 2016 at 03:08 AM about the 2004 Dodge Dakota 4 Dr SXT Quad Cab SB

Question type: Maintenance & Repair

I was getting a recurrent code for P0139 stating that bank 1 sensor 2 had a
slow or unexpected response to ECM.  So, I replaced it with an OE Denso
sensor.  Now I have a P0141 code that states the heated oxygen heater
element has malfunctioned/failed.  This is for the exact same sensor
location, but a different code now that I have installed a new one.  What I
am trying to ask, did I get a bad O2 sensor from the store, or is there
something else going on that might be a common problem? This is on a
3.7L V6 version of the 2004 Dodge Dakota QuadCab SXT.  Thanks in
advance.

2 Answers

13,205

The DTC codes don't always mean a sensor is bad, there can be an issue in the circuit as in your case the 4 wire HEGO is signaling a no or non heat in the circuit / sensor time to inspect the connector and wiring harness the 02 can be Ok, and still have a circuit issue. The downstream sensors don't control anything, they monitor the catalytic converter temperature by means of 02 content the Upstreams are the active Major control signals of air fuel mixture in closed loop only.

The problem with diagnosing the circuit is the difficulty in getting to the connector. It is above the transmission in a tight place. This sensor seems to be directly tied in to the passenger side sensor. Is it a likely scenario that a different sensor could also be causing this code? I don't want to unhook the harness if I can help it. It's a pain in the butt to get back on in such a tight place. I may have too, but I Am hoping I can get around that.

Your Answer

Dakota

Looking for a Used Dakota in your area?

CarGurus has 3,654 nationwide Dakota listings starting at $1,750.

ZIP:

Dodge Dakota Experts

  • #1
    banana
    Reputation
    1,070
  • #1
    Samantha Brown
    Reputation
    1,070
  • #3
    Snidely
    Reputation
    940
View All

Related Models For Sale

Used Dodge Ram 1500
390 Great Deals out of 10,844 listings starting at $1,500
Used Ford F-150
2,580 Great Deals out of 197,074 listings starting at $1,300
Used Chevrolet Colorado
277 Great Deals out of 34,286 listings starting at $1,900
Used Toyota Tacoma
601 Great Deals out of 44,633 listings starting at $1,790
Used Ford Ranger
149 Great Deals out of 5,459 listings starting at $800
Used Chevrolet Silverado 1500
2,273 Great Deals out of 169,086 listings starting at $1,000
Used Nissan Frontier
355 Great Deals out of 23,307 listings starting at $2,495
Used GMC Sierra 1500
1,028 Great Deals out of 66,257 listings starting at $1,995
Used GMC Canyon
144 Great Deals out of 14,418 listings starting at $3,000
Used Chevrolet S-10
17 Great Deals out of 1,251 listings starting at $1,600
Used Dodge Durango
265 Great Deals out of 22,814 listings starting at $895
Used Toyota Tundra
467 Great Deals out of 33,600 listings starting at $2,000
Used Ford Explorer Sport Trac
48 Great Deals out of 1,816 listings starting at $1,990

Used Cars For Sale

2010 Dodge Dakota For Sale
8 Great Deals out of 150 listings starting at $5,995
2009 Dodge Dakota For Sale
5 Great Deals out of 94 listings starting at $6,995
2008 Dodge Dakota For Sale
17 Great Deals out of 287 listings starting at $4,497
2007 Dodge Dakota For Sale
17 Great Deals out of 349 listings starting at $3,897
2006 Dodge Dakota For Sale
18 Great Deals out of 516 listings starting at $2,447

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.