P0139 Becomes P0141 after new Denso Downstream sensor replacement
10

Asked by Michael Jul 26, 2016 at 03:08 AM about the 2004 Dodge Dakota SXT Quad Cab RWD

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
42,415

Auto_Centric answered 8 years ago

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.

1 people found this helpful.
Mark helpful
10

Michael answered 8 years ago

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.

1 people found this helpful.
Mark helpful

Your Answer:

Related Questions

Dakota

Looking for a Used Dakota in your area?

CarGurus has 21 nationwide Dakota listings starting at $3,999.

Postal Code:

Shortcuts

Search Dodge Dakota Questions

CarGurus Experts

  • #1
    Samantha Brown
    Reputation
    3,280
  • #2
    98DAK
    Reputation
    3,260
  • #3
    havoc_33
    Reputation
    2,180
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Dodge RAM 1500
4 Great Deals out of 73 listings starting at $500
Used Ford F-150
338 Great Deals out of 15,311 listings starting at $1,712
Used Chevrolet Colorado
21 Great Deals out of 1,538 listings starting at $3,778
Used Toyota Tacoma
56 Great Deals out of 1,060 listings starting at $8,708
Used Ford Ranger
24 Great Deals out of 1,577 listings starting at $2,888
Used Chevrolet Silverado 1500
202 Great Deals out of 5,916 listings starting at $2,975
Used GMC Canyon
15 Great Deals out of 1,441 listings starting at $6,995
Used Toyota Tundra
35 Great Deals out of 1,173 listings starting at $8,500
Used Nissan Frontier
27 Great Deals out of 880 listings starting at $5,998
Used Dodge RAM 2500
22 listings starting at $9,999
Used Dodge Durango
45 Great Deals out of 2,251 listings starting at $5,500

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. Content will be removed if CarGurus becomes aware that it violates our policies.