P2401
Sistema
Powertrain (EVAP)
Escáner necesario
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.

Síntomas habituales

  • Check engine light
  • EVAP monitor not ready

Causas típicas

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

¿Qué escáner necesita?

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

Use datos en vivo y freeze frame antes de cambiar piezas. Códigos ABS, SRS y U suelen requerir un escáner de todos los sistemas.

Consejos de diagnóstico

  • Registre el freeze frame cuando se active el código
  • Borre el código solo tras corregir la causa
  • Revise códigos pendientes relacionados
  • Verifique que la batería esté por encima de 12,4 V antes de sospechar sensores

Escáneres FOXWELL recomendados

Preguntas frecuentes

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.