P2401
System
Powertrain (EVAP)
Benötigter Scanner
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.

Häufige Symptome

  • Check engine light
  • EVAP monitor not ready

Typische Ursachen

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

Welchen Scanner brauchen Sie?

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

Nutzen Sie Live-Daten und Freeze Frame, bevor Sie Teile tauschen. ABS-, SRS- und U-Codes erfordern meist einen Vollsystem-Scanner.

Diagnose-Tipps

  • Freeze Frame erfassen, wenn der Code erstmals gesetzt wird
  • Code erst nach Behebung der Ursache löschen
  • Auf verwandte pending codes prüfen
  • Batteriespannung über 12,4 V prüfen, bevor Sie Sensoren verdächtigen

Empfohlene FOXWELL Scanner

Häufig gestellte Fragen

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.