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Old 11-20-2023, 04:19 PM
Join Date: Feb 2007
Location: USA
Posts: 40
dgrand is on a distinguished road
Engine failsafe and DSC inactive 76 code


may be I will help somebody by creating this post. I drive BMW X5 2002 3.0 manual transmission. After driving about 500 meters I had DSC inactive and Engine failsafe with three lights on (trifesta) After that engine lost power and once turned off engine reprogramming began.

I am attaching the scanner screenshot.
(D3) DME - Idle speed control valve mechanical fault
(76) DSC DME/DDE - Does not fulfil torque request

I cleared the codes started driving and again got these codes. After inspecting MAF sensor I noticed that the air duck going from MAF sensor down to the engine is almost disconnected from the rubber boot connected to the engine. After connecting it back and tightening clamps I reset the code and now 10 km without error codes.

I thought of everything, dead battery faulty voltage regulator/alternator, I checked steering wheel sensor and wheel speed sensors while driving. I have Launch x431 tool. All was normal.

Now this is fixed. I hope I saved somebody a lot of time.
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Old 11-20-2023, 04:26 PM
Join Date: Feb 2007
Location: USA
Posts: 40
dgrand is on a distinguished road
Here is the MAF air duck boot
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Old 11-20-2023, 09:01 PM
andrewwynn's Avatar
Join Date: Jun 2015
Location: Racine, WI
Posts: 10,556
andrewwynn will become famous soon enough
Massive air leak will code for iac. I actually bought a new iac and when I went to install found the exact same loose boot! Hope your post will help somebody avoid buying IAC valve they are not cheap! (At least I war able to return to FCP)

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2011 E70 N55 (me)
2012 E70 N63 (wife)
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