Intermittent brake warning light, engine juddering error - off / on and problem clears

[PlasticMac]

Will not sync on protocol, same issue with my Foxwell scanner, will not accept any protocol, , sometimes will connect to kw 2000 protocol on the Foxwell scanner, reads extremely slowly, and will not clear DTCs.

VCDS works okay on my other VAG cars.

All sounds more electrical, low voltage, earths, etc.
Mac.

 

[quantumtokoloshi]

All sounds more electrical, low voltage, earths, etc.
Mac.

The two items may be unrelated, issues with the ODB port, unrelated to the error messages, but I suspect the error message is earth or voltage related. I'll give the earth points a clean, and a blast with electrical contact spray, and see if that helps, as a first go.