2001 BMW M5

  • Tiny
  • Ross King Sr.
  • 2001 BMW M5

Engine Performance problem
2001 BMW M5 V8 Two Wheel Drive 108000 miles

Gentlemen I have a 740il 2001 BMW I have a code scout 1500 code reader, when my service engine light comes on the car tends to run very poorly from a dead stop, after a couple of days the engine light goes out and the car runs fine, the code reader gave me a fault code of P1158, can you give me a clue where to start trouble shooting, dealers are telling me it has something to do with the Transmission, shops are telling me its the air mass sensor. Help

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Tuesday, October 7th, 2008 AT 3:03 PM

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  • Tiny
  • Dr. Hagerty
  • Expert
  • 9,717 posts

I'm confused, is this a 740il or an M5? Also, what has been done so far? Has the DME been reprogrammed or the precat 02 sensors replaced yet? Adaptations cleared? Any other faults?

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Tuesday, October 7th, 2008 AT 7:30 PM

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