Powertrain, generic · Transmission

P08B7 Clutch Pedal Position Sensor B Circuit High

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modeNo

P08B7 is set when the second clutch pedal sensor reports a value above its valid range. Ford uses it on vehicles with two PWM clutch pedal sensors, as listed in its 2020–23 gasoline OBD summary next to P08B6 (sensor B low), P08A9/P08AA (sensor A) and P08B9 (A/B correlation); the check is continuous and decides within one second. The clutch switch codes on the same page are marked non-MIL, the sensor codes are not. With a PWM output, high typically means the line is held at its pull-up level (100 % duty cycle), which points to an open signal or ground wire or a short to voltage. GM's published tables cover sensor A only. Effect for the driver: warning lamp, start-stop locked out.

Likely causes

Open signal or ground wire of sensor B, leaving the input at its pull-up level
Sensor B signal shorted to a voltage source
Failed clutch pedal position sensor B

Symptoms

  • Warning lamp on
  • Start-stop disabled
  • Sensor B reading pinned at maximum in scan tool data

Repair estimate

DifficultyEasyDIY possible
Parts and labour€50–300
Time0.3–1.5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

clutch pedal position sensor bwiring harnessecm

Related codes

P08B6P08B4P08B9P08AA

References: fordservicecontent.com, law.cornell.edu.