Modern vehicles don’t operate on single systems—they’re interconnected through data networks such as CAN (Controller Area Network), LIN (Local Interconnect Network), and FlexRay. These networks allow dozens of control modules to share information instantly—from engine timing to traction control and advanced safety features.

When communication fails, it can cause everything from intermittent warning lights to complete no-start conditions. Common causes include:

• Shorted or open CAN lines
• Corroded connectors or terminals
• Faulty modules disrupting the network
• Improper voltage or ground reference
• Aftermarket accessory interference

Our ASE-certified technicians specialize in tracing and testing communication circuits using lab scopes, breakout boxes, and OEM diagnostic tools to pinpoint the exact fault—without unnecessary parts replacement.

Diagnosing communication issues requires patience, precision, and the right equipment. At The Garage MKG, we follow a structured, data-driven approach to identify and verify the problem before making any recommendations.

Our process includes:

• Network topology mapping to identify affected modules
• Voltage and resistance testing on CAN high/low circuits
• Oscilloscope analysis of waveform integrity
• Module isolation to identify network disruptors
• Verification after repair to confirm restored communication

We document all testing results in your Complete Vehicle Health Report, including waveforms, scope captures, and technician notes—giving you proof of cause and confidence in the solution.

Drivers and technicians throughout Muskegon, Norton Shores, and Roosevelt Park trust The Garage MKG because we tackle the complex electrical and network problems that others can’t. We’ve invested in professional-grade tools, specialized training, and advanced diagnostic processes that allow us to locate and resolve communication issues at their source.

Our approach is methodical, evidence-based, and fully transparent. We don’t replace control modules blindly—we test, confirm, and prove every fault before recommending repairs.

Whether it’s a data bus error on a BMW or a communication fault in a domestic hybrid system, The Garage MKG delivers clarity where others guess.

If your vehicle has multiple warning lights, intermittent electrical issues, or diagnostic codes that don’t make sense, it may have a communication fault. Schedule network communication diagnostics with The Garage MKG today.

Call (231) 246-7735, visit 1860 Henry St, Muskegon, MI, or book online anytime. We’ll test, isolate, and document your vehicle’s communication systems with the same precision and professionalism that define every service we perform.