Powertrain, generic · Transmission

P0831 Clutch Pedal Switch A Circuit Low

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

Clutch pedal switches A and B are digital inputs of manual gearboxes: they release the starter only with the pedal pressed, switch off cruise control and tell start-stop whether the clutch is open. Which switch is A or B is up to each manufacturer – FCA calls the pedal-up switch A. Ford's 2020–23 summary checks a dual switch over more than 40 pedal applications and reports a stuck switch without MIL (P0830 stuck high, P0833 stuck low, comparison P0704). P0831 means switch A stays at ground or 0 V where a high level is expected – a short to ground, or an open supply on a positive-switching circuit. GM's 2006 Corvette and CTS-V with the LS2 and LS7 check it on manual gearboxes only, type C without MIL (400 of 500 samples of 100 ms; the table layout makes the sample count uncertain).

Likely causes

Signal wire shorted to ground
Switch supply (fuse) open
Switch faulty internally
Connector corroded

Symptoms

  • Cruise control switches off or cannot be activated
  • Start-stop disabled
  • Engine may not crank (starter interlock)

Repair estimate

DifficultyEasyDIY possible
Parts and labour€30–200
Time0.3–1 h

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

Parts involved

clutch pedal switchswitch wiringengine control module

Related codes

P0830P0832P0833P083FP0704

References: gsi.ext.gm.com, law.cornell.edu.