Left Engine Cylinder Not Working

Aly Diagnostician Congo Posted   Latest   Edited  
Updated
Electrical
2014 BMW X5 xDrive50i 4.4L (N63B44B) 8-spd (GA8HP70Z)
Misfire

Hi,

I receive this car today with engine misfire,I do some checks ,I find that all the cylinder on the left side not working.

fault code on dme 2 : 152822/relay and injectors supply voltage,ignition 2,short circuit to ground.

plz advice and help

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Mervin Owner/Technician
Indiana
Mervin Default
 

Have you checked , the injectors on that bank with either amp probe or scope both supply and control wires see what’s missing and go from there ........., backwards trace it to the relay, fuse, PCM..... Have a good day!

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Mark Technical Support Specialist
Washington
Mark Default
 

That error simply means the ecu is not seeing voltage on the control wire when the injector is commanded OFF. Split the circuit in half first. Do you have power at injectors that will pinpoint the side affected power or control. It is likely power side issue. Inspect for rodent damage. Check fuses and relays after looking at wiring diagram to determine who is related only to that half of engine…

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Jeff Owner/Technician
New York
Jeff Default
 

I have seen a single GDI injector take down the system, shorted right out, unplugged the faulty injector and the rest of the injectors came back to life and ran fine other than that one cylinder with the faulty injector.

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Dan Owner/Technician
Texas
Dan Default
   

...nevermind...

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Aly Diagnostician
Congo
Aly Update
 

Solved. Faulty DME

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Dan Owner/Technician
Texas
Dan Default
 

… I usually only say “nevermind” when I said something irrelevant and/or stupid… The post/reply was obviously from 2 (two) years ago… I don't see what I posted that would have made me say “nevermind”…but I see it got a thumbs down…please tell me where I might find my drivel that would have precipitated the comments I made that DO show… Dan H.

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Tom Engineer
California
Tom Default
 

Although we're storing all edits, we have not yet worked on a user interface for people to view the edit history of a message, but will one day. I checked, and it looks like your original comment was: .."cylinderS"....right?"

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Dan Owner/Technician
Texas
Dan Default
 

… Thanks Thomas…I figured it was something stupid I said… Dan .

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