I have a 2001 330ci manual This car was not fun to drive because it was almost impossible to get a smooth low speed start in first gear. Drag starts, no problem launching above 2k no problem Yes I have driven manual cars all my life, yes I know about the cdv, yes I replaced the clutch, no I...

I started to have an issue with bogging around 2500 RPM after installing eBay headers. I keep hearing about swapping O2 sensors by mistake and was wondering about that? However, I have no post-cat sensors in (unplugged). I did have to use a 90 degree adapter on a pre-cat sensor and im wondering...

My car recently got engine code P2195 with the description O2 Sensor Signal Stuck Lean, I also got two pending codes P2197 and P2195. Bellow I have attached Freeze Frame data and a 5 minute warm idle. What I do see is both bank 1 and bank 2 fuel trims are ~27% which calls for a really lean...

Hello, Please take a look at the following video: video The car was driven at a steady 50KPH most of the time. Both Bank 2 sensors are showing lean measurement. 1. Are Bank 1 sensors cycling interval fast enough? Is the O2 sensor becoming lazy? 2. What's your opinion on the lean mixture...

2000 BMW 323i Auto 190k miles I had a P1183 O2 Sensor (Bank 2 Sensor 2) code, replaced Bank 2 Sensor 2 with BOSCH Direct Fit, cleared the code, performed a few drive cycles, P1183 code did not come back but Oxygen Sensor Readiness test for smog is still not complete (all other tests are...

It seems to me that O2 sensor 1 should be reading something. I'm new to OBD, to OBD Fusion, and to BMWs, though, so I may be wrong. Drove 25 minutes this AM, from cold start to fully warmed up, and not a blip on O2 #1. But - no codes, no warnings, nothing notable going on, other than mildly...

Hey i was told by someone that if one short term fuel bank was running at 4.7 and one at 9.4 . Then my first is lean . He also told me to take a look at my o2 sensors but i dont really know what im looking for . Can anyone tell me if my o2s look like they have been running lean ? Or even rich?

I've had my O2 Sensors reading "Incomplete" for quite some time and I doubt any of the previous owners changed them so I changed all four (Pre and Post Cat) and still have the Emissions Readiness Reading "Incomplete". I'm using Pro Torque with an ELM reader Is there a method to reset this the...

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...

Hello e46-ers, have lurked here for a long time, have found a lot of good info, saved my a** many times, thank you all for that, and the time has come when I need to ask a question on my own, until I do something worth sharing ofcourse. I own a 2001 330ci Manual (Euro), have had it for over a...

I've been reading up on O2 sensors and have a general question I was hoping I could get answered here. In order to optimize fuel economy, is it critical that both the pre-cat and the post-cat O2 sensors are functioning properly, or do only the pre-cat sensors play a role in this regard?

Never extended, cut or spliced. Never thrown a code. Replaced preventatively last fall at 95k. These are the front pre-cat oxygen sensors. Price is for the pair and includes shipping. $100

My 2001 325xi just put on its 190 thousandth mile the other day, and it's still going- but less than strong lately. I know for a fact that the bank 2 sensor 2 oxygen sensor is out, that trouble code has been present for a little while. I'm planning to replace it next Saturday. I don't think it...