Question about 2001 BMW 3 Series

3 Answers

I HAVE A 2001 BMW 330CI AND THE CODES ARE SAYING THAT BANK 1 AND 2 SYSTEM ARE TOO LEAN.

Posted by on

Ad

3 Answers

  • Level 1:

    An expert who has achieved level 1.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 1 Answer

I have a 2001 bmw 330i and i want to know were is de 02 sensor bank 2 , sensor #1

Posted on Mar 02, 2011

  • Manolito64 Mar 26, 2011

    Drive the car up on ramps and pull the cover off the bottom of the engine. Look at the exhaust pipes leaving the engine on the passenger side. The thick section in the pipe is the catalytic converter. The oxygen sensors are about the size of your thumb, and have a wire coming from them that (I think) goes to the wiring loom on top of the engine. There will be a sensor above and a sensor below (or in) each catalytic converter. They will be difficult to break loose. Replace them one at a time so you don't cross the wires. I have not yet done a 330, but if this is like most other jobs on the 330, it will be just a little bit tighter fitting such that that a job that is tight but do-able on a 325 is a little too tight and requires more disassembly on a 330.

×

Ad
  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Governor:

    An expert whose answer got voted for 20 times.

    Teacher:

    An expert who has written 2 tips or uploaded 1 video tip.

  • Expert
  • 151 Answers

That means that ur not getting enough fuel/air mixture in cylinder 1 and 2

Posted on Jul 07, 2010

Ad
  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 1,586 Answers

That's usually a problem with the primary (pre-catalyst) O2 sensors. It can be a fault of the mass airflow sensor as well, but typically the O2 sensors are to blame, as they're the most important sensors for determining air/fuel mixtures. O2 sensors tend to need replacement every 60-80k miles, so you're likely due (or overdue) for new ones.

Posted on Jul 07, 2010

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Failed emissions with 2001 BMW 325i. Codes given were P0313, P0171 System too lean Bank 1, and P0174 System too lean bank 2. What do these codes mean?


Those codes mean the fuel to air ratio is to lean, not enough fuel. This is caused by quite a few things, most common is a intake manifold vacuum leak or other source (like hoses and the brake booster) A problem with the MAF (mass air flow) sensor can cause this as well if it is reading the incoming air volume wrong.

Feb 27, 2017 | 2001 BMW 325i

1 Answer

P1087 diag code for 2011 BMW 328i


P1087 BMW - O2 Sensor Circuit Slow Response in Lean Control Range Bank 1 Sensor 1
Possible causes
- Faulty O2 Sensor Bank 1 Sensor 1
- O2 Sensor Bank 1 Sensor 1 harness is open or shorted
- O2 Sensor Bank 1 Sensor 1 circuit poor electrical connection


Read more: http://engine-codes.com/p1087_bmw.html#ixzz3AD8uz7pb

Ford OEM Motorcraft parts and vanity license plates

Aug 03, 2014 | 2001 Ford Taurus

1 Answer

P0171 system too lean bank 1


check for secondary air injection leaks, seals and plastic loom hoses go bad due to underhood engine heat. Performance trick is to wrap the exhaust in headder wrap to control underhood heat and save parts in long run. Also, vacuum check at the intake to test for leaks, Check injector o rings.

May 25, 2014 | 2001 BMW 325i

1 Answer

Bmw x5 4.4i code p0430


p2187 system too lean bank 1
p2189 system too lean bank 2
p0430 catalyst stem efficiency below threshold bank 2

You have some air leak. Gaskets/broken hoses.

Mar 16, 2014 | 2006 BMW X5 4.4i

1 Answer

Code po 491 and po 492


P0491 Secondary Air Injection System (Bank 1)
P0492 Secondary Air Injection System (Bank 2)
Good luck for you!
OBD2 code reader

Jun 25, 2013 | 2001 BMW 330

1 Answer

Engine check light on error code 1 is P0171 system too lean bank 1 error code 2 is P0174 system too lean bank 2


P0171 system too lean bank 1
P0174 system too lean bank 2
links to information on the codes

it means that the O2 sensors in your vehicle detected a lean condition in their respective banks. this could be caused by a dirty MAF (mass air flow) sensor or a vacuum leak downstream from the MAF sensor

sometimes you can clean the MAF with electronics cleaner or brake cleaner but be sure to take it off the vehicle first. be careful not to damage the MAF while spraying the cleaner, and allow it to dry completely before installing it on the vehicle.

May 21, 2011 | 2001 Jaguar S-Type

1 Answer

What do the codes 1128, 1129, 1133, and 1134 mean on my Porsche Boxter 2001?


code P1128 02 sensor bank 1 lean
code P1129 02 sensor bank 1 lean to limit
code P1133 02 sensor bank 2 lean
code P1134 02 sensor bank 2 lean to limit

fuel system is lean.

Jan 29, 2011 | 2001 Porsche Boxster

1 Answer

Bmw 330ci m sport automatic 2001 makes a clinging sound when accelerating engine management light on and diagnostics says 228-e4-fuel trim bank 2- too lean. 227-e3-fuel trim bank 2- too lean its not...


Explanation:

According to my research and the BMW master mechanic, basically your oxygen sensor is getting an abnormal reading. The abnormal reading will result in the sensor being unable to adapt beyond its +/- 10% threshold to adapt for the fuel/trim mixture. Therefore, either your car is going to run too lean (not enough fuel) or too rich (too much fuel).

Problems:

1) Either your pre-cats oxygen sensors are bad.
2) Fuel pressure regulator
3) Leak in the air intake /vacuum system

I would think that it is probably your oxygen sensors. Replace that and you should be good to go. Thanks for rating my response and for using FixYa!

Jun 30, 2009 | 2001 BMW 330

Not finding what you are looking for?
Cars & Trucks Logo

1,147 people viewed this question

Ask a Question

Usually answered in minutes!

Top BMW Experts

Anthony Jones
Anthony Jones

Level 2 Expert

128 Answers

Doberman

Level 2 Expert

254 Answers

dhnguyen

Level 2 Expert

281 Answers

Are you a BMW Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...