P0144
Sistema
Powertrain (Fuel/Air)
Escáner necesario
Enhanced OBD2 scanner (live data graphs, freeze frame, battery voltage test)

O2 Sensor Circuit High Voltage (Bank 1 Sensor 3)

Understand P0144, common causes, and the right FOXWELL scanner to diagnose it.

Third O2 sensor (where equipped) circuit high — some V engines use multiple upstream sensors.

Síntomas habituales

  • Check engine light
  • Fuel trim issues

Causas típicas

  • Failed O2 sensor
  • Open circuit
  • Exhaust leak affecting sensor

¿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 P0144 with a basic code reader?
P0144 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 P0144?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.