P0704
Systeem
Powertrain (Transmission)
Scanner vereist
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Clutch Switch Input Circuit Malfunction

Understand P0704, common causes, and the right FOXWELL scanner to diagnose it.

Clutch pedal switch circuit fault on manual transmission vehicles — TCM/ECM uses clutch input for idle and start logic.

Veelvoorkomende symptomen

  • No crank in neutral
  • Stalling when shifting
  • Check engine light

Typische oorzaken

  • Failed clutch switch
  • Misadjusted switch at pedal
  • Wiring under dash
  • Clutch master cylinder interfering with switch

Welke scanner heb je nodig?

Full-system scanner (engine, ABS, SRS, transmission, service resets)

Gebruik live data en freeze frame voordat je onderdelen vervangt. ABS-, SRS- en U-codes vereisen meestal een full-system scanner.

Diagnosetips

  • Leg freeze frame vast wanneer de code voor het eerst verschijnt
  • Wis de code pas na het oplossen van de oorzaak
  • Controleer op gerelateerde pending codes
  • Controleer of accuspanning boven 12,4 V is voordat je sensoren suspecteert

Aanbevolen FOXWELL scanners

Veelgestelde vragen

Can I diagnose P0704 with a basic code reader?
P0704 may set in the engine module, but related diagnostics often benefit from an enhanced or full-system scanner with live data and freeze frame.
Is it safe to drive with P0704?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.