P08B7: Clutch sensor B high input needs channel-specific verification

Ford assigns P08B7 to clutch pedal position sensor B circuit high in its dual-sensor monitor. The result concerns the electrical range of the second channel, not merely whether the two pedal-position readings disagree.

Keep the B-channel evidence visible

The same table identifies sensor A and B low/high results and a separate A/B correlation code. A healthy first-channel display cannot clear the B-channel concern. Record the individual signals and any correlation result together so that an invalid electrical input is not treated as a trustworthy position measurement.

The listed sensor-monitor duration is below one second with continuous execution. That timing explains why a short circuit excursion can matter even if the pedal reading looks normal during a later inspection.

Do not substitute switch logic or another sensor's voltage limit

Ford's clutch-switch checks use different state logic and repeated driving events. The page also describes a sensor-plus-switches implementation. Determine the installed arrangement before choosing a test.

No numerical P08B7 voltage boundary is published on the cited page. The appropriate limit and terminal information must come from the vehicle's service procedure. Verification should demonstrate stable, valid B-channel behavior and successful correlation where applicable. The source does not establish a failed sensor assembly or controller from the code alone, and it does not justify bypassing any clutch-related interlock to make a test pass.

Source and applicability

This explanation covers the cited Ford monitor variants, not every vehicle displaying this code. Match the engine, sensor architecture and calibration before applying numerical limits.

Ford OBD summary, PDF page 102.