Défaut 2A9E camshaft sensor synchronisation - Bimmerfest - BMW Forums



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E63 / E64 6 Series (2004 - 2010)
The E63/E64 BMW 6 Series builds on BMW's sporty heritage with aggressive lines and an incredible motor to back the design up. Available in coupe and convertible trims with a standard 4.8 liter engine producing 360 horsepower and 360 lb-ft of torque, the 6-series is a popular choice that exceeds expectations.

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  #1  
Old 06-06-2018, 12:49 PM
Taodu59 Taodu59 is offline
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Défaut 2A9E camshaft sensor synchronisation

Hi guys, I ' m Tao. I drive a 6series e63 630i from 2005 (N52 engine). I have an engine check light (obd) on my dashbord and impossible to reset it... default code is 9A9E (camshaft sensor inlet synchronisation). I replaced this camnshaft and inlet VANOS with new parts, I reset the default but it comes back again after the next startup ! Do somebody has an idea to solve this failure ? Engine is running properly... but I become nervous to see this engine check light !
Thanks in advance for your help !
Tao
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  #2  
Old 06-06-2018, 06:29 PM
HerbP HerbP is online now
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Is it possible that you plugged the Vanos solenoid wires up backwards, it is also possible to plug the camshaft sensors up backwards. If this does not help I would open the DME power box I make sure that the Valvetronic wiring plug is seated properly.

Since you can seem to work on the car, the OBD2 readers do not allow you to fully run diagnostics on our engines. I would purchase a OBD2 cable & ISTA/D to find out what is really going on?
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Old 06-07-2018, 12:24 PM
Taodu59 Taodu59 is offline
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Hello HerbP,
Thanks for your feedback.
Wiring of camshaft sensor and VANOS are ok. Then for DME power box, I'm not sure I can open it myself, I'm quite afraid to make something wrong....
And I use a Carly adaptator to do the diagnostic check so maybe I do not have all the informations....
I will try to find somebody to check the DME.
Thanks
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Old 06-07-2018, 12:33 PM
Taodu59 Taodu59 is offline
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In addition I m worried to get an issue with the timing chain... I saw on other engines that the timing chain can move a little bit and so it generates a defect due to bad synchronisation with camshaft ! But looking on the web, I never saw this issue happened on a N52 engine !
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Old 06-07-2018, 07:04 PM
HerbP HerbP is online now
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The DME box is easy to open, & there is really nothing you can harm inspecting the wiring harness connections. Just make sure you seal it back up properly when tightening the cover.
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Old 07-25-2019, 06:44 AM
janosik81 janosik81 is offline
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hi tao!
did you fix your car??
or anyone with same issue
i have same problem 2a9e.
checked wires(continuity), checked voltages on sensors/dme module, set timing 2 times
swapped sensors/solenoids exhaust <-> intake
still have code 2a9e
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Old 07-25-2019, 07:52 PM
HerbP HerbP is online now
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You could have a bad Valvetronic module, but that is just a guess.
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Old 08-02-2019, 05:37 AM
janosik81 janosik81 is offline
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i found it.. in my case was broken vanos gear. after replacement no more codes.
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Old 08-02-2019, 06:36 PM
HerbP HerbP is online now
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That sounds expensive, but glad you found the problem.
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Old 08-02-2019, 10:53 PM
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Hsurf Hsurf is offline
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How on earth did that happen .
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Old 08-03-2019, 06:49 PM
HerbP HerbP is online now
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I would suspect that something in the timing chain area, came apart?
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Old 08-04-2019, 08:42 AM
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Mulchman Mulchman is offline
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Pull the two VANOS solenoids, clean and swap them. Check for vacuum leaks. Check fuel purge valve.

You may also want to read up on the 3 & 5 series boards. The 6 was only sold with the V8 in the US, so most of the posts here are for the N62, not the M62.

Good luck
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