P0122
Sistema
Powertrain (Fuel/Air)
Escáner necesario
Enhanced OBD2 scanner (live data graphs, freeze frame, battery voltage test)

Throttle/Pedal Position Sensor/Switch A Circuit Low Input

Understand P0122, common causes, and the right FOXWELL scanner to diagnose it.

TPS A circuit voltage low.

Síntomas habituales

  • No throttle response
  • Limp home mode

Causas típicas

  • Short to ground in TPS circuit
  • Failed sensor
  • Connector at throttle body loose

¿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 P0122 with a basic code reader?
P0122 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 P0122?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.