DTC 1174 and 1175 - BMW Forum - BimmerWerkz.com

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post #1 of 2 (permalink) Old 04-17-2008, 12:04 AM Thread Starter
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DTC 1174 and 1175

I am preparing to sell my 97 540i with 126K on the odometer. The car has two problems that I would like to fix before I sell it.

The primary issue is that the check engine light keeps popping up. I have scanned the codes and keep getting 1174 and 1175. I clear the codes and the car runs fine for a few day and then the codes pop back up. I just replaced the precat o2 sensors with a pair of new Bosch sensors.

Any suggestions?
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post #2 of 2 (permalink) Old 04-17-2008, 12:10 AM
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sp0rky is an unknown quantity at this point
Could be a vacuum leak or MAF as well as a bunch of other similar things.

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