P1518
Sistema
Powertrain (Throttle)
Escáner necesario
Enhanced OBD2 scanner (live data graphs, freeze frame, battery voltage test)

Throttle Actuator Control Module Serial Communication (GM)

Understand P1518, common causes, and the right FOXWELL scanner to diagnose it.

Communication fault between ECM and throttle actuator control module on GM drive-by-wire.

Síntomas habituales

  • Engine power reduced
  • Intermittent limp mode

Causas típicas

  • CAN wiring to throttle body
  • Failed throttle body
  • Low voltage during cranking
  • Gateway 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 P1518 with a basic code reader?
P1518 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 P1518?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.