Diagnostic Overview

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2010 BMW M6, 2010 BMW M5, 2009 BMW M6, 2009 BMW M5, and 2008 BMW M6. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Accelerator Pedal Position Sensor Overview

Courtesy of BMW OF NORTH AMERICA, INC.

The acceptable voltage range of both sensors is continually monitored. If the voltage is outside the acceptable range, then a P-Code is stored and "check engine soon" indicator bit is set.