Jump to content

Code P0141 - O2 Sensoor Heater Circuit

wmwtn

Recommended Posts

wmwtn Enthusiast

wmwtn

Posted
Posted

I just had the exhaust replaced from the manifolds back throuth both converters on my '98 5.7L. The cats were replaced to fix a P0430 code. The tech did the worst job I've ever seen in my life. When I got it back the cats were vibrating against each other and one O2 sensor was forced solid against the heat shield. When the truck would accelerate and decelerate we could hear the "creek" that we later found out was the body against the O2 sensor.

 

I knew I was in trouble. I got the shop to fix the exhaust where it didn't touch and they assured me all was okay (like I was gonna belive that). I drove it for about 150 miles and this evening I got the code P0141 - "O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)".

 

Which O2 sensor is this referring to? In front or behind the cat? Left or right side?

 

I had already replaced the two front O2 sensors with new Boche units the week before I took it in for the cat replacement. I don't see why they would have touched the rear O2 sensors behind the cats, but maybe they could have. So my fears are broken/cracked sensor or burned wires, or ???? Ugh...

 

I'll get under it tomorrow and see what I can. All tips and info really appreciated!

 

Thanks to all,

Marty

wmwtn Enthusiast

wmwtn

Posted
  • Author
Posted

Thanks chevroletmb! I'll crawl under it tomorrow. The rear O2 sensors are still original at 129K miles, so I expected to replace them fairly soon anyway, but just not immediately... Many thanks...

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.4k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    342,838
    Total Members
    8,960
    Most Online
    bellssn690
    Newest Member
    bellssn690
    Joined

  • Who's Online   2 Members, 0 Anonymous, 522 Guests (See full list)

  • Latest Articles

  • Posts

    • cautious optimist
      GM Hard Folding Tonneau by REV review

      By cautious optimist · Posted

      This is a really late reply but I just found this thread. They won't sell the hinges. I've gone 7 rounds with them. Their solution is to buy a new cover. I'm about to buy a new cover and it won't be a Bakflip. It also won't be from realtruck.com. 
    • Chuck FB
      2 speed transfer case optional now?

      By Chuck FB · Posted

      Yes, and also pulling heavy trailers or a large camper up steep grades as well as descending grades such as the more rustic off road camping locations and using engine braking with that low gearing as well as soft ground can just suck the power . I realize pickups these days tend to have an over all lower first gear ratio compared to automatic transmission pickups from years back so that has helped a lot in its ability in high range but there comes a point if in four wheel drive the torque runs out at the wheels, certainly with a gas engine. They don't put two speed transfer cases on pickups for a cool factor, they have a function if one needs that massive torque to the wheels that high range can't deliver. 
    • Grumpy Bear
      Grumpy Bears 2015 Silverado 2WD

      By Grumpy Bear · Posted

      Notes 7/18/2026   3,400 miles on this batch of Mobil 1 Euro 5W40 since the GDI pump replacement. Alcohol runs very clean when ring seal is tight and the sump isn't getting hosed with fuel. Checked oil level at fill up today as is my practice and grabbed a white Kleenex to look at the color. What color?  I was going to change it but.....  
    • Another JR
      2 speed transfer case optional now?

      By Another JR · Posted

      4 low is really nice on steep boat ramps. 
    • Chuck FB
      Gas Prices

      By Chuck FB · Posted

      Interesting, I suspect I would have fueled up in Lee Vining as the day prior I would have filled up either in Laughlin or near there and maybe again before I entered Death Valley and once out the other side late that evening as I kept on driving into the night up near Lee Vining. Next morning I most likely fueled up in LV before heading over Tioga Pass into ( as I refer to it as "Yose .... Mite" 😁 ). And again that was 19 years ago but the price then must not have jumped out at me like the 5 bill a gallon theme of nutty cult hippy country Big Sir or head so far up their rear Aspen. I'd be curious to know where the highest prices are in the lower 48, I probably would not be far off to guess somewhere in Cali forn ie. Coldfoot and Prudhoe bay may have those prices beat but that is a whole other world up there and when prices are more normal elsewhere that is about what they can be up there I believe in no mans land. Anyway interesting that the 395 corridor is hosing people and the thing is, its tourist season and its not like there are a lot of competition options when driving up that highway from what I could see. Yup, big ole Boaterhomes and various other RV's ahead and behind me at the Yosemite entrance gate and they have to get their fuel somewhere.  

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...