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Hello ETCG forum! Thanks for reviewing and helping me out with my problem. I have a 2001 dodge dakota v6 (3.9) It runs great but I can’t pass NYS inspection with the check engine light on. I did an OBD test and got 2 codes. (P0031 and P0141) Both which are for o2 sensors. There are only 2 o2 sensors on the truck, (bank 1 sensor 1) and (Bank 1 sensor 2) I replaced the Bank 1 sensor 2 o2 sensor and the check engine light is still there, I am just wondering if there are any other problems that could be wrong sense im getting both codes. Could it be my fuse or exhaust system? I just don’t wanna buy a new o2 sensor for bank 1 sensor 1 if i dont have to. Thanks a bunch!
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Hi Dakota Sport, The two codes are for the heaters on the two 02 sensors . Im not as familiar with the dakotas but a fuse check sounds like a good idea. Id also check the wiring real good. It seems odd to me that both sensors could have heater problems at the same time. So Id look over wiring and see if youre getting voltage and signal to the wire on the older sensor. Im sure one of the more knowledgeful members can tell you more about that.
Thanks alot for the responses quickly guys! I will defenitly be checking for voltage on my wires and on my fuse. probably replace the fuse anyways. thanks a bunch! Hope to be on here to help more often! 🙂
I agree, do a good inspection of the wiring and check the fuse. I’m thinking maybe an o2 sensor shorted on an exhaust manifold and popped the fuse
Quoted From ChrisR1987:
Hi Dakota Sport, The two codes are for the heaters on the two 02 sensors . Im not as familiar with the dakotas but a fuse check sounds like a good idea. Id also check the wiring real good. It seems odd to me that both sensors could have heater problems at the same time. So Id look over wiring and see if youre getting voltage and signal to the wire on the older sensor. Im sure one of the more knowledgeful members can tell you more about that.
+1 to this ^^ i would bet they are not getting voltage.
This may seem like a dumb question but I was just wondering did you reset the codes after the repair? I didn’t see you mention that anywhere. If not I would suggest you do that and recheck to see if the CEL comes back.
+1 on ETCGs suggestion. I didnt even think of that. If you replaced the bank 1 sensor 2 indicator and you still get the code for it then it definately suggests a wiring issue in my opinion
Hey Eric sorry about the reply on an old forum but its the only thing I could find on the fuses and you probably know. I have a 3.9v6 2003 slt quad cab and there is a check engine light on. I plugged up my scanner and it told me 02 sensor so I checked all fuses and the one under the hood isn’t getting any power to the fuse even with the truck in assecory mode. I asked my dad who is a mechanic for over 60 years and he said that it doesn’t send enough to actually light up the test light. I was wondering if this correct because I thought it would need power to the fuse no matter what even no matter how minute the power actually is.
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