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P08B9 Powertrain

Clutch Pedal Position Sensor A/B Correlation

The signals of clutch pedal position sensors A and B do not correlate within the calibrated tolerance.

Affected components

  • Clutch pedal position sensor a
  • Clutch pedal position sensor b
  • Ecm

Common causes

  • High likelihood: One sensor characteristic drifted
  • Medium likelihood: Harness incorrectly swapped

Possible symptoms

  • Check engine or transmission warning light on
  • Harsh, delayed, or missing shifts
  • Possible limp mode (locked in one gear)
  • Slipping or shuddering during gear changes

Diagnostic notes

  • The malfunction indicator lamp may illuminate
  • Reduced-power or limp mode may occur

Sources

Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.

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