Hi Folks I have 2004 Dodge ram and was having several codes related to 02 sensors last fall, so this spring I replaced all of them with denso sensors and I am now getting a P0032 code. Prior to replacing the sensors it was running rough,bad idle stall at time's bog down around 2000 rpm then race off suddenly. Truck runs great now but the idiot lite is still on. After I did the install I pulled fuse 23 and did the old turn the truck on and wait for the second ding. I then replaced chip and fired her up and the dang idiot light is still there. Went to autozone and pulled the code. I tired to erase and it would not let me?

I have heard that NTK where factory replacement, I also heard that Denso were. When i talked to parts guy at Dodge he said no mopar are the factory ones. So I explained no Dodge does not have there own O2 factory they get them from another company, after 7-10 minutes talking to this Monkey I said see you. So now I either have a wiring problem, a bad PCM or a bad sensor. Where does the wiring from the drivers side pre cat sensor run? I would like to check to see if wired is fried somewhere. Part of me is saying screw it, truck runs great who cares, as i only tow my boat with it, but I also go to some secluded places so i don't need it to crap the bed either. Anyone got any idea's for me. Help hate all this electric crap.

 

Removing Fuse 23 does nothing for you.

You have to disconnect the negative on the battery then press the brake pedal a few times... reconnect and you've just reset the PCM and the DTC should be gone.

It will reappear if the problem still exists.

 

densoco makes mopar.. just fwiw..

heater circuit high relates to pre-heating of the sensor filament.. it's drawing too much juice..

check your wiring carefully.. those things are in a bad place to meet corrosion and abrasions.. and the heat makes them brittle pretty easily..

chances are, though, that the sensor itself is, literally, burned up.. those filaments are pretty sensitive for the location and purpose they serve.. grease is terrible for them, road grime isn't good- but antifreeze will take them out in a heartbeat if exposed..

there are a series of tiny vents on the exterior of the sensor.. they sample exterior air and compare it to interior exhaust to determine o2 content based on resistance... if the exterior vents get clogged, it will burn up the self heating sensor as well... but, again, contaminants like anti freeze are the number one enemy of that sensor.. if you've dripped some down there, that sensor is toast.

 

[QUOTEthere are a series of tiny vents on the exterior of the sensor.. they sample exterior air and compare it to interior exhaust to determine o2 content based on resistance... if the exterior vents get clogged, it will burn up the self heating sensor as well... but, again, contaminants like anti freeze are the number one enemy of that sensor.. if you've dripped some down there, that sensor is toast.[/QUOTE]

Thanks for the reply. I understand they are sensitive but I installed them yesterday and it threw a code the first time I started the truck, I was super careful not to get any grime or anti seize on them and not touch the end with my dirty mitts while I installed it. Its most likely a short ,burned wire , Yippy my luck. You need the hands of a 6 year old Chinese girl to get to the wiring around the drivers side front 02 sensor. Guess that's my next thing to check.

 

Going to swap the front sensors and see if it generates a P0031 code instead of the present P0032. I think I would actually be happy if it was one of the new o2 sensors was bad. Doubt that one. I couldn't be that lucky. LOL

 

Thouight I would take the time to report what I found as I hate when someone comes on here tell's us their problem, they try a few things and then disappear and we never do find out how thy fixed their issue. How the hell can you learn from that? Anyway I switched sensors but noticed the drivers side (one that thru new code) seemed loose compared to passenger side. Upon closer inspection one of the tabs on the connector you need to depress to pull sensor apart and i imagine keep together was missing. So I rigged up a lock tie and ensured it was completely connected then I tightened it up. I cleared the code by disconnecting both posts touched them together, waited 5 minutes, put posts back on, fired up the beast and code is gone, truck runs good and most important the Friggen idiot light left town. I'm so impressed I figured this out I'm going to have a good old Alexander Keith's beer. Lesson I learned "Always rule out the obvious"! Dodge 0 Goat 2

 

Always feels good when you figure out a problem yourself, don't it? Good job.

And yes, the Denso or NTK are suitable replacements. Bosch not so much...