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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > 2011 E90 335xi N55 crank/no start Terminal 87_2 / short c



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      04-14-2026, 04:49 PM   #1
eurodiy
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2011 E90 335xi N55 crank/no start Terminal 87_2 / short c

Hi everyone, I’m stuck on a 2011 BMW E90 335xi with the N55. The car cranks but will not start.

This started right after i've replaced the valvetronic. There was a fault with the DME and after looking searching, so I had the DME cloned and installed a replacement. The car still cranks/no-start but I don't have the code that the DME is faulty (my apologize I don't remember that code).

I've installed ISTA+ and went to down reading the codes that I have. After cranking the car a few times, it would register these codes:

002C89 blow-off valve, activation: short circuit to earth
002D52 VANOS solenoid valve, intake, activation: short circuit to earth
002D9C Exhaust VANOS solenoid valve, activation: short circuit to earth
002E4B Exhaust flap, activation: short circuit to earth
00300C intake camshaft sensor, electric: short circuit to B+
00300E exhaust camshaft sensor, electrical: short circuit to B+
00332F Termina 87_2: no voltage
006EC4 DSC: steering angle sensor, adjustement
00A6CF JBE: AUC sensor
S0158 No communication possible with: Park distance control

The big one seems to be 00332F Terminal 87_2: No voltage since after I've cleared the codes, that is the main one that is always present.

Without really knowing what i'm doing, hence i'm posting here, I've tested both blue relays inside the junction box (the white box in the motor area, passenger side). Both are clicking when i'm applying power to them.

I've went through the fuse box, completely removing it and inspecting it, also checked all the fuses and that seems good. I found a bit of corrosion on a green relay in the fuse box but that seems for the wipers.

Any help with would be appreciated. I'm not sure how to proceed with ISTA+. It does give some troubleshooting steps but I'm having a hard time following the diagram and looking for ways to test what I have to do next.

Thanks in advance for you help!

Last edited by eurodiy; 04-14-2026 at 05:33 PM..
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      04-14-2026, 05:33 PM   #2
eurodiy
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sorry, I realized I did put the code but I didn't have the descriptions. I've added them in my original post.
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      04-16-2026, 07:51 PM   #3
eurodiy
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I have posted this on more than one forum, if it can help someone, i'll update my progress on every forum.
xrviz from bimmerfest has provides this information:

"Your code is indicating no voltage at the DME despite the DME main relay being switched on.
The junction box is behind the glovebox. The module at the bottom of the image is the DME.
Not sure which of the two will be easier to test at.
With ignition on (not cranking) you should get 0 volts on the white/violet wire and 12V on the other 4 wires."

see attached image.

I've replied with:

Alright so as per your diagram (which i'm still trying to find where in ISTA+ that diagram exist hehe), the connection 42 at the DME (on connector X60001) does not have power with ignition on. I have connection 12 which as power but the 9 and 11 doesn't exist for some reason on the harness, there's no wires there.
Now, connection 42 at the DME is tied to the fuse F16 (10A red fuse) which has power when I turn the ignition on, on both side of the fuse. I tested with a testing light.
So the power doesn't go from the F16 fuse to the connection 42 at the DME. I've set my multimeter at ohms and tested the resistance from the connection 42 to the F16 fuse (on both sides of the fuse) and I get a 0, which indicates a good wire...
So i need help again please. Why is that I see power at the fuse with the ignition on, the fuse is good and the wire seems to be good as well.
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