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o2 sensor
1-20 of 30 Results
  1. Driveline, Engine & DME Tuning
    I will be doing a header installation soon on my '99 328i after I get them coated. I have read about the nightmare of o2 sensor fitment and how people have had to re weld the bungs. I am going to get a tune later this summer and it will remove the CEL for having no post cat o2 sensors, so I am...
  2. General E46 Forum
    Hello all, I understand this code is probably talked about a lot on here but maybe not like this? A few years ago I started getting a P0420 code so like any normal person would I stuck an O2 sensor spacer about 3" long onto the downstream sensor. This was working for the past 4 or 5 years no...
  3. General E46 Forum
    Hi, PLEASE HELP!! I have a 2001 330i. About a month and a half ago the car was idling rough, running lean, misfiring, super down on power and appeared to be in limp mode. I found the issue to be a bunch of torn inlet pipes and a faulty MAF sensor. I replaced all of these, scanned with the scan...
  4. UK
    I have a 2004 bmw 320cd with 150k miles on the clock. While pulling away from standstill the car seemed to hesitate / misfire / judder somewhere between roughly 1200-2000rpm. At first i thought it might be a flywheel problem but then noticed it seemed like a strange misfire. If i carefully...
  5. General E46 Forum
    So a couple days ago i changed my pre cat o2 sensors in my 2001 320i as the bank 2 sensor threw a code and I figured id just replace both. However, the next day i went on a little road trip and noticed that throttle response wasnt nearly what it used to be and it just feels more sluggish...
  6. General E46 Forum
    SCROLL PAST FREEZE FRAME DATA FOR QUESTION(S) BELOW ARE ALL DETAILS YOU MAY NEED/WHAT IVE POSTED BEFORE *sorry for making yet another thread i just want to give the most detailed info and try to get the most answers i can and hopefully help others who also have a similar issue and can't find a...
  7. General E46 Forum
    Hey everyone, The other day, I noticed the Service Engine Light turn on on my '05 M3 Vert. It stayed for about a day and then went off, but I'm still a bit worried. I ran diagnostics on my own, after the light went away, (thru Carly BMW), and one of the faults is "00000C, Lambda probe 2 before...
  8. Driveline, Engine & DME Tuning
    Driving an 05 330i ZHP and wanting to confirm the correct Oxygen sensors and see where everyone has found them for the best price. Car is at 170,000 miles and figured it was time to preventatively replace them. Downstream Bosch 15680 and 15681 Upstream Bosch 17215 and 17216 (I've heard 17215...
  9. General E46 Forum
    I have all monitors set except the Oxygen Sensor Monitor. I was told that if the Catalyst Monitor went ready the O2 Sensors would follow. Somehow the Catalyst Monitor and the O2 Heater Monitor are ready and the O2 Sensor Monitor is not. I have driven the 20 - 30 mph drive cycle on cruise control...
  10. General E46 Forum
    Hi, I have a 2003 325i (M54) that is in need of new O2 sensors or at least that's what our shops computer is telling us. I've been looking around for O2 sensors and I cannot believe how expensive they are! There's a little luck on my side that I am the IT manager of a repair shop and have access...
  11. General E46 Forum
    Hello hello! I've been using information on this forum for about 5 months rebuilding a 2002 325xi but this will be my first time posting. Usually, I'm able to search around enough to find my answer but unfortunately not this time around. I hooked up my bmw computer to the old gal and I'm...
  12. General E46 Forum
    SES lit up, and my Automatic (iOS device) showed P2098. I hooked up Carly to the OBD port and it showed: Engine / Motor MFL-toggle bit Code: 00002D Oxygen-sensor control bank 2 upstrem Code: 0000EC Oxygen-sensor control bank 2 downstrem Code: 0000E2 I replaced both post-cat sensors with...
  13. General E46 Forum
    Have a 1997 328-I convertible and got a fail on smog. The HC ( hydrocarbons) were at 201, where as average was shown to be 17 and max allowed was 100. I had the CEL and checked codes, had a P0170 and I think a P1188. Was finding info on forums of the fuel system intake hoses are often problems...
  14. General E46 Forum
    I have had a fun time the last few days...yes, days...trying to remove a post-cat oxygen sensor that refuses to dismount from its factory hole. The car has 335K on it, so it's no surprise it's rusted to hell, but I am starting to get to that stage where I'm out of options, but I just can't see...
  15. General E46 Forum
    Hi all e46 fanatics. 2002 320i facelift M-Pack2, M54B22 Engine, Orient Blue, Japan import. 64,000km on it. Just bought it and I just love this car especially the handling is outstanding. But it suffers from excessive fuel consumption 16-19L/100km it's 15-18 MPG (driving like miss daisy), this...
  16. General E46 Forum
    My car is 2001 BMW 330I with 150K miles. I found LTFT of bank1 is ~ 0% - 0.8% most of the time. While bank2 LTFT is ~ 5%. I already swapped O2 sensors between 2 banks but LTFT of bank1 vs bank2 don't follow (bank2 still about 4% higher). Anyone think of a reason causing this? Thanks! :hmm:
  17. General E46 Forum
    I changed my valve cover gasket (used part http://www.amazon.com/gp/product/B00DMIAKKM/ + Permatex high temp RTV silicone) and spark plugs (used part http://www.amazon.com/gp/product/B000GX9FSY/, OE NGKs) and a little while later I keep getting: PO0171 - P0171 System too Lean (Bank 1) PO0174 -...
  18. E46 Xi Forum
    like the title says i just got a scanner and i dont have any codes, but i have a failing part and im not sure what it is. i think its n o2 sensor. i ran the monitor tests to get this result. Thank you in advance for any help.
  19. Driveline, Engine & DME Tuning
    100 degree weather and Im sitting in the car with the AC on and the thermostat starts to go up to the first white line to the right. Then the check engine light comes on. I checked the OBD Codes and have a code of PO 135. I looked it up and it says Oxygen sensor 2. My mechanic said...
  20. General E46 Forum
    I wanted to pass this on to anyone who may want or need new O2 sensors for their e46. I noticed that Amazon is once again stocking the Bosch 15109 (BMW P/N 11-78-1-742-050) Pre-Cat O2 Sensor for $42. This O2 sensor will fit all Non M models - 323i/Ci, 328i/Ci, 325Xi, 330Xi. It will only fit...
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