P0831
PowertrainTransmissionlow severityClutch Pedal Switch "A" Circuit
What P0831 Means
The PCM detected a fault in the clutch pedal position switch A circuit. This switch tells the module whether the clutch pedal is pressed.
Symptoms
- Engine won't start with clutch pressed
- Cruise control won't disengage
- Erratic shift behavior
Common Causes
- Faulty clutch pedal switch
- Damaged wiring or connector
- Misadjusted pedal switch
- Failed PCM input circuit
Diagnostic Steps
- Scan for clutch switch codes
- Check switch state in live data
- Inspect switch and connector
- Test switch continuity with pedal actuation
🔌 Don't have a code reader?
Any of these will read and clear this code — pick by how deep you want to go.
Budget handheld~$40
ANCEL AD410 →
No-phone-needed handheld — reads, clears, live data, freeze frame.
✓ ANCEL official store
Serious DIY~$100
BlueDriver Pro →
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SHOP FAVORITEShop-grade tablet~$300
Autel MaxiCOM MK808S →
Bidirectional tests, service resets, all systems.
✓ Autel official store
Pro diagnostics$1,500+
Autel MaxiSys MS906 Pro →
Full-system pro platform — topology mapping, ECU coding, the works.
✓ Autel official store
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