Alex545i 8/17/2012

2004 BMW 545i Base 8Cyl4.4L - Transmissions & Drivetrains

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What is the fault code 4F89?

BMW 545i sport transmission error.

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  Jimm 8/18/2012

  The transmission has an internal fault (mechanical issue). The code 4F89 = Ratio monitoring gearshift 3-4
  Under EOBD that codes very similar to P0783; which really points to "gear selection,3-4 malfunction"
  Possible causes? Wiring/ Transmission range sensor/ Shift solenoids/ transmission internal fault (mechanical)..
  
  
  

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