Error codes

Good morning!

Octy Mk3, 11/2016, 125'000km, 2.0TDI CRMB 110kW not tuned, manual gearbox, without Keyless.

2 error codes are found with XTOOL VAG401 code reader:

17-Instruments / Malfunction

B104B31

Key, no signal. Passive/ abiogenesis

19-CAN Gateway / Malfunction

U120200

Bus defect CAN- diagnostics. Passive / abiogenesis

Those codes appears from time to time even after erasing. No other codes appear.

Car works fine, doors opens/closes, immobilizer works, key battery ok (and no warnings about key battery replacement).

Should I worry about those codes?

Google search for exact codes says almost nothing.

From what I've found, 1st code is concerned with problems with immobilizer/key synchronizing/etc.- but my works fine.

BR,

Indars

Edited 30 June, 20223 yr by indars
error in kW