P1518
System
Powertrain (Throttle)
Scanner som krävs
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.

Vanliga symptom

  • Engine power reduced
  • Intermittent limp mode

Typiska orsaker

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

Vilken scanner behöver du?

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

Använd live-data och freeze frame innan du byter delar. ABS-, SRS- och U-koder kräver oftast en fullsystems-scanner.

Diagnostiktips

  • Spara freeze frame när koden först sätts
  • Rensa koden först efter att orsaken är åtgärdad
  • Kontrollera relaterade väntande koder
  • Verifiera batterispänning över 12,4 V innan du misstänker sensorer

Rekommenderade FOXWELL-scannrar

Vanliga frågor

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.