Sounds like a fun puzzle. The ECU would spit out a bunch of error codes, each one tagged with a label I’d slap on a diagram. Then the diagnostics would try to match the noise pattern to known fault signatures, but with random binary you’d just end up with a mess of “unknown” codes that look the same. It’s like a jigsaw with every piece painted the same color. I’d get a clean sheet, label every pin, and draw out what I think the noise is doing—nothing improvisational, just neat wiring and a tidy diagram.