Hi; I am new to this form and was hoping I could get some help. my 2007 Z4 3.0i recently started missing when i accelerate. I was able to borrow a diagnostic code reader from a friend and read the fault code.
The only code showing is "P135B". which is identified as "Manufacturer Contrl Ignition System or Misfire." I have been unable to locate any definitive information about this code or what might have caused it to trigger. Does anyone happen to have knowledge abut this code or have access to a resource that might give a clue what causes it?
any help would be greatly appreciated.
Edit; I cleared the fault and drove the car for about 2 hours today, checking for codes every time i would stop. For the first 1 1/2 hours no problems. The car ran ultra smooth. then suddenly I had to slow way down to avoid hitting a bicycle rider. as I accelerated around him I got the miss again, and it happened several times over the next 5 miles. when I stopped I had the same P135B code again.
Hello and welcome. Unfortunately, you have posted in the wrong forum. This section is for the e89 Z4 built from 2009 and still in production.
Your 2007 Z4 is an entirely different car. We can't help you our car has a very different and brand new engine. As a wild guess, have you ever changed the spark plugs??
Wild guesses are nearly useless though. Best to do a proper diagnosis. Fault code is only a first step.
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