Question about 2001 BMW 5 Series

1 Answer

Evaporative system I had a mechanic scann my 2001 525i and the scanner said the the evaporative system has a problem. The mechanic reset the service engine light. It went off for a couple of days and is now back on again. The mechanic told me that the service engine light may have came on because I did not put on my gas cap on correctly. Im wondering what other reasons the evaporative system would cause the light to come on. Thank you !

Posted by on

  • Bruce Hathcock May 11, 2010

    The purge cansiter valve may be malfunctioning and the pressure pump that pumps up the tank after being filled may be leaking or going out. And cap may be leaking try replaceing the gas cap seal. you know try KISS Keep it simple stupid, Not calling you that just had to remember that when working on cars as a lot of times you get into really complex problem solveing for something as simple as a gas cap gasket cracking.



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert whose answer got voted for 500 times.

  • Master
  • 1,776 Answers

The system consists of a charcoal cannister that collects gas vapors from the fuel tank. It stores these vapors until certain engine conditions are met, and then a purge valve/solenoid opens and the vapors are used in the combustion process. A faulty gas cap will cause the problem if it is not sealing or venting properly. A bad purge solenoid could also not be allowing the cannister to purge and the cannister could be full.

That's a basic synopsis. Hope this helped and best wishes.

Posted on Jul 25, 2009


1 Suggested Answer

  • 2 Answers

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

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.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


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



Related Questions:

2 Answers

2006 Highlander - Check engine light and VSC light on. What does this mean?

Many possibles, but first check gas cap for torn gasket or just being loose. The VSC light is related to emissions issue and can be leaking vac hose, bad purge valve and other such.

Dec 12, 2014 | 2006 Toyota Highlander

1 Answer

Reset service engine soon light on 2004 Buick LeSabre

need to scann the car to code and repair problembefore reset light

Sep 21, 2014 | 2004 Buick LeSabre

1 Answer

I ave a 1997 ford escort LX wagaon. I need the check engine code to reset it?

its no code to reset engine light you need to scann the ecu wjit a scanner and see .. if the light is no its because the ecu see a problem end need to fix the problem to rest the light

Sep 04, 2014 | Cars & Trucks

1 Answer

Low Fuel Pressure

when check engine light comes on VSC is disabled. small leak is for evaporative system (to prevent fuel vapors from entering the atmosphere) small leak is A leak less than forty thousandths of an inch, it could possibly be a gas cap not fully tightened,leak in a vapor line,leaking fuel filler neck,gas tank leak,purge valve,vent valve just to name afew. clearing code will turn off both lights but if theres a leak lights will come back on.

Apr 05, 2013 | Cars & Trucks

2 Answers

I have a 2008 Beetle with a 2.5 litre engine. The engine service soon light has been coming on for the past 4 to5 months. We have replaced the spark plugs, number 5 cyl coil, changed the battery, serviced...

In most cases the check engine light indicates a sensor is bad. Have a mechanic scann it and if so replace it.....hope this info helps and if so Please leave rating on this post and good luck..

Aug 15, 2012 | 2008 Volkswagen New Beetle

1 Answer

'service engine soon' light

I think that is scan tool only but most mechanics have the scanners these days so it will be a lot cheaper to go to your local mechanic instead of the dealer. It prob wasn't reset last service if the light wasn't on at time of service.

Jul 15, 2012 | 2006 BMW 330i

3 Answers

Service light on

Service Light its a warning about time to change fluids or tune-up.

Dec 14, 2010 | 1999 Chevrolet Silverado 1500

2 Answers


evaporative Emission control system leak detected Sounds like the fuel cap may be loose tighten the cap and then pull the positive battery cable for a few minutes and see what that does.

Aug 01, 2010 | 1999 Ford Explorer

1 Answer

I scann my car 2005 corollathe code came p0441and p0445 what does it mean engine light blinking

p0441: Evaporative Emission Control System Incorrect Purge Flow;
A code P0441 could mean one or more of the following has happened:

Bad vacuum switch
  • Broken or damaged EVAP line or canister
  • Open in PCM purge command circuit
  • Open or short in Voltage feed circuit to Purge Solenoid
  • Faulty purge solenoid
  • Restriction in EVAP solenoid, line or canister
  • Corrosion or resistance in purge connector
  • Bad PCM

p0445: Evaporative Emission Control System Purge Control Valve Circuit Shorted
(This also came up already above)

Nov 30, 2009 | 2005 Toyota Corolla

Not finding what you are looking for?
2001 BMW 5 Series Logo

276 people viewed this question

Ask a Question

Usually answered in minutes!

Top BMW Experts

Anthony Jones
Anthony Jones

Level 2 Expert

128 Answers

Frankie B

Level 2 Expert

65 Answers


Level 2 Expert

254 Answers

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

Answer questions

Manuals & User Guides