Sök
U0144
System
Network (CAN Bus)
Scanner som krävs
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Lost Communication with Gateway Module A

Understand U0144, common causes, and the right TOPDON scanner to diagnose it.

Primary gateway module offline — routes between vehicle CAN buses.

Vanliga symptom

  • Many modules offline at once
  • No-start on some platforms

Typiska orsaker

  • Failed gateway
  • CAN-H/L damage
  • Aftermarket alarm splice

Vilken scanner behöver du?

Full-system scanner (engine, ABS, SRS, transmission, service resets)

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 TOPDON-scannrar

Vanliga frågor

What does U0144 mean?
U0144 indicates lost communication with gateway module a. Primary gateway module offline — routes between vehicle CAN buses.
Can I diagnose U0144 with a basic code reader?
U0144 may set in the engine module, but related diagnostics often benefit from an enhanced or full-system scanner with live data and freeze frame.
Which TOPDON scanner do I need for U0144?
Full-system scanner (engine, ABS, SRS, transmission, service resets) See recommended tools on this page.
Is it safe to drive with U0144?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.