Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 7 Series / 8 Series > 7 Series - E65 / E66 (2002 - 2008)

7 Series - E65 / E66 (2002 - 2008)
Discussion pertaining to the flagship BMW here.

Reply
 
Thread Tools Display Modes
  #1  
Old 02-08-2013, 05:37 AM
BTLD_LS1 BTLD_LS1 is offline
Registered User
Location: Texas
 
Join Date: Feb 2013
Posts: 4
Mein Auto: 745li
Reduced Engine power - no fault code

Hi Everyone

I am new to the BMW scene so please forgive my ignorance. My girlfriend has a 05 745li with 125k miles on it. The check engine light and reduced engine power lights came on last week on the car. She had the car taken to what she thought was a reputable shop in the are. They called a few days alter saying it was a crank sensor and the car was ready to pick up. Picked the car up and made it 20 miles and the same thing again

Called the shop back, in my opinion very un helpful and pushed it back saying well the car does have a lot of miles on it so things do break.

At this point I borrowed a stnadard OBDII scanner and there are no codes showing on the car. The car is in limp mode and will not move for than 5mph or so.

I did search the forums and found some "open ended" discussions that didnt seem to have a real resolution.

Basically the car has an irratic idle at this point, between 700 and 1300 per the Generic OBDII scanner I have. The Reduced Engine power light is on, but no standard OBDII fault codes present.

Are there BMW specific codes for the Reduced Engine Power that cannot be read with a generic scanner?

Has anyone else had this problem? If so what was the resolution?

Thanks in advance for any help!
Reply With Quote
Ads by Google
  #2  
Old 02-08-2013, 06:34 AM
Piers1989 Piers1989 is offline
Officially Welcomed to the 'Fest
Location: Newcastle, UK
 
Join Date: Mar 2012
Posts: 302
Mein Auto: E65 745i
You need to use a proper scaner, or get BMW INPA / DIS to do a scan.

You can buy one of the cheap cable kits on ebay and just use a laptop.

If it doesn't save a standard code it shouldn't be anything too serious (or at least not something the car things is too serious). That doesn't mean it cant be something more important, but hopefully the major components arent reporting faults.
Reply With Quote
  #3  
Old 02-08-2013, 07:28 AM
Khabar Khabar is offline
Officially Welcomed to the 'Fest
Location: Virginia
 
Join Date: Mar 2009
Posts: 574
Mein Auto: 745i 2005
i would check two things #1 Throttle body #2 DME disconnect battery for a few hours and then reconnect,if it is DME your car wont start again 99%. Reduced Engine power light is safe mode when only half cylinders are working and recorded by DME. Once you erase it by disconnecting the battery, it wont readjust again and will shot off cylinders and prevent car fro starting. I would be able to crank the engine,but that is all. That are only 2 things i can relate to Reduced Engine power light
Reply With Quote
  #4  
Old 02-08-2013, 09:01 AM
BTLD_LS1 BTLD_LS1 is offline
Registered User
Location: Texas
 
Join Date: Feb 2013
Posts: 4
Mein Auto: 745li
Quote:
Originally Posted by Khabar View Post
i would check two things #1 Throttle body #2 DME disconnect battery for a few hours and then reconnect,if it is DME your car wont start again 99%. Reduced Engine power light is safe mode when only half cylinders are working and recorded by DME. Once you erase it by disconnecting the battery, it wont readjust again and will shot off cylinders and prevent car fro starting. I would be able to crank the engine,but that is all. That are only 2 things i can relate to Reduced Engine power light
Im assuming DME is the engine management / ECU?

I just want to understand correctly. If the car wont start after reconnecting the battery this is possibly a bad DME?
__________________
05 745li - K&N filter - 14.9 1/4 with a loaded car
98 Camaro Z28 - 11.7 E85 machine
07 GMC Yukon - Family car
Reply With Quote
  #5  
Old 02-08-2013, 11:26 AM
Khabar Khabar is offline
Officially Welcomed to the 'Fest
Location: Virginia
 
Join Date: Mar 2009
Posts: 574
Mein Auto: 745i 2005
more likely. Try it. it not going to hurt more than it is now
Reply With Quote
  #6  
Old 02-08-2013, 11:34 AM
BTLD_LS1 BTLD_LS1 is offline
Registered User
Location: Texas
 
Join Date: Feb 2013
Posts: 4
Mein Auto: 745li
Quote:
Originally Posted by Khabar View Post
more likely. Try it. it not going to hurt more than it is now
I ordered a cable and software from amazona nd am having it saturday delivered so I can take a look at it. After fighting with the shop they are willing ot look at it for free, if I can get it to them, this is after having it towed there the first time and them having the car for a week.
__________________
05 745li - K&N filter - 14.9 1/4 with a loaded car
98 Camaro Z28 - 11.7 E85 machine
07 GMC Yukon - Family car
Reply With Quote
  #7  
Old 04-04-2013, 10:55 AM
BTLD_LS1 BTLD_LS1 is offline
Registered User
Location: Texas
 
Join Date: Feb 2013
Posts: 4
Mein Auto: 745li
Hey guys I finally got a chance to work on this. It appears I am getting a P060A code. This code simply says "Internal Control Module Monitoring Processor Performance". Has onyone else had this issue? Should I just replace the DME? And if so, can I now program it with the cable / sofware I have?

Thanks!
__________________
05 745li - K&N filter - 14.9 1/4 with a loaded car
98 Camaro Z28 - 11.7 E85 machine
07 GMC Yukon - Family car
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 7 Series / 8 Series > 7 Series - E65 / E66 (2002 - 2008)
Today's Posts Search
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On



Forum Jump


All times are GMT -7. The time now is 07:37 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms