P0831Clutch Pedal Switch A Circuit Low
- Generic OBD-II code · Powertrain
- How the car detects it
- 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).
- What you may notice
- Cruise control switches off or cannot be activated
- Start-stop disabled
- Engine may not crank (starter interlock)
- Likely causes
- LikelySignal wire shorted to ground
- PossibleSwitch supply (fuse) open
- PossibleSwitch faulty internally
- RareConnector corroded
- Repair
- Easy · Often possible to do yourself.Typical cost: €30 – €200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.