
OBD2 Port Not Communicating: A Forensic Hardware-First Diagnostic Protocol
When your scan tool flashes “No Link,” the immediate instinct is to blame software or protocol mismatch. But in our failure analysis lab, where we
Insights from a Trusted Automotive Cable Manufacturer
Explore expert tips, product updates, and industry insights from Carsun — a leading manufacturer of OBD2 cables, diagnostic connectors, and custom wiring solutions since 2005.

When your scan tool flashes “No Link,” the immediate instinct is to blame software or protocol mismatch. But in our failure analysis lab, where we

Let me tell you about Tuesday, November 12, 2024. I was standing in a muddy heavy equipment yard in Ohio, watching a technician struggle to

Your diagnostic session is dead in the water. The scan tool connects, reads a few PIDs, and then the screen freezes or flashes “LOST COMMUNICATION.”

You’re finalizing the Bill of Materials. The line item for the J1939 backbone cable shows a choice: the standard version, and the shielded variant with a $1.50 per meter

That intermittent J1939 fault that idles your $500,000 combine during the critical 10-day harvest window isn’t just an annoyance—it’s a direct $6,000 withdrawal from your profit margin. If you’re reading this, you’ve

Your custom OBD-II diagnostic cable assembly passed all tests in the lab. However, once in the aftermarket or integrated into the final product, field failure

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