P1518
Systeem
Powertrain (Throttle)
Scanner vereist
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.

Veelvoorkomende symptomen

  • Engine power reduced
  • Intermittent limp mode

Typische oorzaken

  • CAN wiring to throttle body
  • Failed throttle body
  • Low voltage during cranking
  • Gateway fault

Welke scanner heb je nodig?

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

Gebruik live data en freeze frame voordat je onderdelen vervangt. ABS-, SRS- en U-codes vereisen meestal een full-system scanner.

Diagnosetips

  • Leg freeze frame vast wanneer de code voor het eerst verschijnt
  • Wis de code pas na het oplossen van de oorzaak
  • Controleer op gerelateerde pending codes
  • Controleer of accuspanning boven 12,4 V is voordat je sensoren suspecteert

Aanbevolen FOXWELL scanners

Veelgestelde vragen

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.