P2401
Systeem
Powertrain (EVAP)
Scanner vereist
Enhanced OBD2 scanner (live data graphs, freeze frame, battery voltage test)

EVAP System Leak Detection Pump Control Circuit Low

Understand P2401, common causes, and the right FOXWELL scanner to diagnose it.

EVAP leak detection pump control circuit low — distinct from DPF on some platforms; also used as emissions pump circuit on Asian imports.

Veelvoorkomende symptomen

  • Check engine light
  • EVAP monitor not ready

Typische oorzaken

  • Short in LDP circuit
  • Failed leak detection pump
  • ECU driver fault

Welke scanner heb je nodig?

Enhanced OBD2 scanner (live data graphs, freeze frame, battery voltage test)

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 P2401 with a basic code reader?
P2401 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 P2401?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.