Question about BMW 750
P0720 is usually a speed sensor. Newer BMWs have a speed sensor at each wheel, which also sends information to your traction control. If one of the sensors is giving a wrong reading, the vehicle thinks you are losing traction and it cuts power.
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Posted on Mar 27, 2011
I JUST INSTALLED A REBUILT TRANSMISSION FOR A BMW 323I AND THERE ARE 4CODES P0720, P0734, P0735 AND P0740 CAN YOU TELL ME WHY THIS IS HAPPENING OR IS IT BECAUSE OF THE SPEED SENSOR FAULT CAUSING THE OTHER CODES
Posted on Nov 04, 2013
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Posted on Jan 02, 2017
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P0700....Transmission Control System (MIL Request)
P0720....Output Speed Sensor Circuit
hope this helps
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