BimmerFest BMW Forum banner
o2 sensors
1-20 of 20 Results
  1. E60 / E61 (2004 - 2010)
    I have 2010 535i with 78K miles on it. Check engine light was coming on and off intermittently...took it to the dealer to check out what the issue was...they are recommending to change bank1 before and after car O2 sensor as the status is showing "Fail" in red on their analysis. Also they...
  2. 7 Series - E65 / E66 (2002 - 2008)
    Can anyone help me find the location of my pre-cat, bank 2 o2 sensor on my 2008 750li. Most have said that it is a top-down replacement but I cannot see it anywhere. Hoping someone has done this before and can steer me in right direction. Thanks!
  3. X5 E53 (1999 - 2006)
    I bought a used 2001 X5 3.0, and it just failed the emissions inspection. I have codes for 3 O2 sensors.. The X5 has passed 100k, which I have learned here is about the benchmark for these to be replaced. So is having more than one go bad in a short span a common thing? The vehicle did sit...
  4. E90/E91/E92/E93 (2006 - 2013)
    so i searched all over here and never found the exact answer to my issue with all 4 o2 sensors reading bad. in the e box on the passenger side engine compartment i had fuse ef4 blowing every time i turned the key to run. people said it was most likely a short in one of the o2 sensor wires. i...
  5. E46 (1999 - 2006)
    I have a 2004 E46 325CI with the M54 engine in it. A few weeks ago, my check engine light came on. I didn't think much of it as I was getting on the throttle pretty good getting onto the interstate (figured it was just a retarded O2 sensor due to my lead foot). Took it to the shop to get the...
  6. E46 (1999 - 2006)
    Hello Just purchased a 2002 325xi with 65k miles. Read in owners manual that several fluids are considered lifetime. Saw no reference to actual specifications for transmission fluid for the auto trans, transfer case or axle. Would appreciate specifications for them to drain and refill...
  7. X3 E83 (2004 - 2010)
    I have an 06 X3 that I have had in the shop multiple times. The service engine soon light keeps coming on. The scanner says that there is a fault in all four oxygen sensors but I know that's not reality. There must be something else wrong that is setting off these sensors and the BMW repair...
  8. E46 (1999 - 2006)
    Just completed the replacement of both Pre cat O2 sensors. I'm posting this here because there are lots of non US BMW owners that lurk like me so maybe this will help or perhaps a few US owners want to expand their horizons? :dunno: Here are few tidbits that frustrated me and worked or me: 1-...
  9. E85 / E86 Z4 (2003-2008)
    So I know this has been discussed and most people have already figured out how to do it. I have an '07 M coupe. I'd like to get rid of the hefty stock headers. I was thinking about getting some euro headers, but I've been told they no longer are importing them into the country. That being said...
  10. E90/E91/E92/E93 (2006 - 2013)
    My SES light poped up last week, got it serviced by my BMW dealer and they replaced the O2 sensor. It lit up again. So wondering how many O2 sensors does the 2009 335i have?
  11. E39 (1997 - 2003)
    Hi, I bought a 1998 528i with a bad clutch to fix up and make some money. The car has 170,000 Miles and runs great, no misses or anything. also has a dinan Software upgrade I am now dealing with some CEL's and I need some advise Pulled the OBD II codes: P0135 O2 Heater Circuit (Bank#, Sensor#)...
  12. E39 (1997 - 2003)
    Hello all, I am new to Bimmerfest and BMW's in general. I just bought my wife a 1999 528i. When I bought the car I could tell it had some sort of vacuum leak. With the help of the forums here I was able to find the problem and fix it (bad CCV valve and two bad vacuum hoses that are...
  13. X3 E83 (2004 - 2010)
    I am ready to scream. I have a 2005 X3 3. with a check engine light on now for 3 months. After taking it to AutoZone..determined both error codes (P0171 and 74). Lean on both banks. Not knowing a thing about cars..let alone an X3 (but learning) I have learned that it could possibly be the MAF...
  14. E39 (1997 - 2003)
    My car just failed the smog test...to prepare I did the following: Oil Change, New Plugs (NGK Iridium), Fuel Injector Cleaner. It was over on the reading for NOX. Does anyone know what this means? The guy at the shop was saying something about the Cats? Help!
  15. E46 (1999 - 2006)
    My 2003 330i started to run kind of rough about a week ago and the service engine light came on. I started to look for pre cat o2 sensors and try that. I drove the car for about a week with the o2 sensor codes on and it idling rough at idle. Then on thursday on my way to work the engine vibrated...
  16. E46 (1999 - 2006)
    My 2003 330i 118k has been idling roughly with the tach jumping at idle. the service engine soon light is on but will go out every now and then but with out fail come back on. I used my diagnotic scanner (SR-300x OBD scanner from Bavarian Autosport) and it pulled up codes Table 19 CODES : CA O2...
  17. X5 E53 (1999 - 2006)
    Thank you guys in advance for your time and expertise. History: The vehicle in question is a 2002 BMW X5 3.0i with 71k. In the past 6 months, I had a throttle housing replaced with the original BMW throttle. During the reprogramming of the throttle at the dealership, an error code for the...
  18. E39 (1997 - 2003)
    Hello everyone, i need to change my cps and thermostat and the precat o2 sensors. so i contacted yet another shop (bmw indy), and they tell me that if my car's thermostat and cps goes bad, it burns the DME??? and that il need to replace this at this time too? why does this not sound right to me...
  19. E39 (1997 - 2003)
    Hi thanks for looking. I bought a 540i last thrusday. the owner told me he had someone plug it into a diagnstics machine and it needs new 02 sensors? can anyone tell me what they are and also what result that means to me and how much? also the air flow meter connected to the air intake was not...
  20. E39 (1997 - 2003)
    First, you guys are awesome for all your help..:thumbup: I wanted to change o2 sensors pre & after cat so i would need 4 and got quoted at my shop about $1200:mad: insane people...Guy at the shop swear to me that he would be really surprise if accomplish this job:dunno: Level of difficulty in...
1-20 of 20 Results
Top