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Why is my 2002 BMW x5 3.0i running lean - BMW Cars & Trucks

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Main cause is an air leak. Check throttle inlet hose. Also valve cover gasket and any other hose or gasket.

Posted on May 13, 2017

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Posted on Jan 02, 2017

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P0444


code po444 is referencing a purge control problem. this could be a bad connection or a problem with the purge solenoid for the evaporative system(EVAP). this is controlled by the PCM to allow fuel vapours to be drawn into the engine and burnt from the gas tank under certain conditions. the p0174 is a lean running condition on bank 2 and p0171 is a lean running condition on bank 1. the lean running conditions could be O2 sensors, lean condition caused by bad fuel pressure, dirty injectors, bad MAF sensor, vacuum leak.

Aug 26, 2014 | 2006 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

330i Shut off and not cranking


lean readings on banks come from air leaks in manifold and exhaust--- low fuel pressure --regulator --pump.--filter- bad injectors ---MAF/VAF sensors faulty and HO2S faulty. Have a BMW dealer shop look at it

Dec 01, 2013 | 2005 BMW 330i Automatic

1 Answer

2002 bmw check engine light on, diagnostic trouble codes p0174 and p0171.


Google the Codes
OBD PO171 etc & print a code chart
They are Oxygen Sensors-lean on both banks
They should have been changed at 100,000
miles on all your vehicles.

Aug 03, 2013 | 2002 Mitsubishi Montero

1 Answer

00 bmw 323i chekc engine light is on and it's giving me codes for all 4 O2 sensors i replaced them and light comes on with the same codes when you turn off the car and turn it back on. possible fu


You need to inspect the spark plugs to see i the engine is running lean or rich. I have seen cars set codes or the O2 sensors instead o setting rich/ lean codes.

Dec 12, 2012 | 1999 BMW 323 Series

1 Answer

2002 330 i misfire with low fuel


it could be your exhaust sensor. If it is not sending the right information to the computer than the computer will adjust the tuning to suit.I hope this helpsregards

Feb 22, 2012 | 2002 BMW 3 Series

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

1 Answer

My bmw 745i reads system too lean on bank what could this possibly mean


If you have a lean code on just one bank, it usually means the oxygen sensor on that side is bad. On rare occasions, it could indicate an actual one side lean condition. Only way to tell for sure is to have the oxygen sensor tested. If it is fine, you may have plugged fuel injectors on that side.

Jun 12, 2009 | 2002 Nissan Altima

1 Answer

Running lean


check fuel pressure and vacume leak arond intake /tbi

Dec 27, 2008 | 2002 Chevrolet Monte Carlo

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