Question about BMW 325

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My 320i (2006) when got checked by the dealer during regular service, found that the computer had logger the following fault, "Valvetronic Servomotor not found" This fault occured 162 times. I have no other error or driving problems. The check also confirmed a weak battery. Anyone there with similar issues.

Posted by alvin_dmello on

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Bill Boyd

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  • BMW Master
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Indicates a broken wire that controls the valve servo .solenoid operation
the battery could be a faulty voltage regulator

Posted on Dec 18, 2017

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motor1258

Mike Butler

  • 6674 Answers

SOURCE: battery goes dead on 2004 pacifica

There is obviously a draw from somewhere, and if your dealer doesn't have a mechanic who knows how to narrow it down to the circuit causing the problem, then I'd question there ability. With that said, when all else fails, you simply remove negative connection off battery first, then positive. Take a 12 volt test light & secure one end to the + clamp or connector, and the other end to the battery+ post. Now connect your negative back up to the battery as it was. If that test light, lights up, there is a draw. It will be brighter, the more draw there is. Your going to have some, just from your radio memory alone, but now comes the fun part. All you do is pull the fuses one at a time, if light goes out, or dim's you've found a draw. When you have a real hard one to narrow down, you make sure you know where they all go back to, whether by your map at fuse box, or your own notes, and you pull them all out, and light should go out for sure, if not, there is another circuit or panel, or relay drawing the current. If it goes out, you start putting them back in one at a time, and when the light comes back on bright, you found the circuit. Mark that one down, pull the fuse back out, light off, now do the rest that you haven't checked yet, just to see if there is more than one draw causing the problem, if there is, mark it down, pull it out & continue on until all done. Now you/they narrowed it down or isolated the circuit causing the problem.

Posted on Dec 30, 2008

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Sean80000

Sean Piquet

  • 1867 Answers

SOURCE: Have a 2004 GTO with the following error:

If these are false readings (which I doubt) you can try resetting the system to restore all factory default settings. You need to have the system set in customisation mode to do this.

Check your vehicle handbook which explains the steps to do this.

Once reset drive the car and check the warnings.. If they remain (and they probably will) you will need to take the car to the dealer to diagnose and rectify the problem.

Your handbook explains what each of the warnings means and the air bag fault warning should not be ignored. "Service error" means there is a fault with the instrument panel and Fuel Gauge Error means there is a fault with the fuel level measurement system

Posted on Dec 03, 2009

Anonymous

  • 1 Answer

SOURCE: valvetronic internal fault and servomotor power limited

weenz231 i have the same problem with my car ,, have you solved problem yet ??

Posted on Jun 20, 2010

vbbdude

  • 1 Answer

SOURCE: valvetronic internal fault and servomotor power limited

Hi I have a 2003 318i se saloon it started to loose power a few weeks ago now when you rev it up it makes a noise through the inlet manifold like its a dump valve it still drives but with very reduced power i had a new exhaust fitted yesterday with a new cat as i was told the cat had collapsed been told it could be the timing chain other than that i have not got any idea can any one help please.

Posted on Sep 23, 2011

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2 Answers

What is the 2851 error code on E90 BMW 320i 2009 model


I believe it is referencing your Valvetronic adjuster motor, the one that advances (changes) the timing of the valvetrain under varying RPM. Here is an excerpt from a do it yourself fix if you are mechanically inclined:
Recently I had a E90 320i come into my shop with the mil light on and running on half power. A scan of the vehicle indicated valvetronic servor motor internal failure. On testing the valvetronic servor motor I found it to be working.

The problem was it was not advancing the valve timing thus the half power of the engine. If you ever have this problem here is a fix that works. Remove the servor motor and. With a screwdriver push the eccentric shaft gear as far back anti clockwise as it can go. Insert the servor motor and connect its 2 pin plug. Them switch the ignition onto position 2 and withing a space of 15 seconds depress the accelarator pedel down to full throttle 10 times and you will hear the servor motor program itself back to factory spec. Re-fit the valve cover and problem solved. I hope you will find this post useful.
Good luck...

Feb 02, 2018 | BMW Cars & Trucks

1 Answer

I just had my ac compresser replaced in my bmw e90 320i 2005 and now its saying to check engine please help is there a sensor that may need replacing


run the fault codes to see what put the engine light on
engine lights operate for engine faults and transmission faults
during the ac repair , a wire could have become disconnected
Consider it as a unrelated problem to the AC

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yes,
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if not, change it.
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Valvetronic internal fault and servomotor power limited


Hi I have a 2003 318i se saloon it started to loose power a few weeks ago now when you rev it up it makes a noise through the inlet manifold like its a dump valve it still drives but with very reduced power i had a new exhaust fitted yesterday with a new cat as i was told the cat had collapsed been told it could be the timing chain other than that i have not got any idea can any one help please.

Mar 11, 2009 | 2000 BMW 3 Series

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