Buenas mismo problem en A3 8l 1999.
Creo que elm327 no vale.
Parece que el Vag KKL si.
https://es.aliexpress.com/store/product/Vag-409-VAG-COM-409-1-Vag-Com-409-1-KKL-OBD2-USB-Cable-Scanner-Scan/121101_32778681375.html?spm=2114.04010208.3.2.hwqycr&ws_ab_test=searchweb0_0,searchweb201602_7_10152_10065_10068_10150_10136_10137_10060_10138_10062_10141_203_10056_127_10055_10054_10059_10099_10103_10102_10096_10109_10052_10144_10053_10142_10107_10050_10143_10051_10525_10527_10529_10084_10083_10080_10082_10081_10110_10111_10112_10113_10114_10516_10515_10519_10078_10079_10073_10070_10122_10123_10124-10050_10150_10152_10519_10525,searchweb201603_1,afswitch_1,ppcSwitch_5,single_sort_0_default&btsid=70b4c92d-7468-40e8-8d30-32954ca581b1&algo_expid=badfbefb-7dd9-4278-9bf0-d05fc9415832-0&algo_pvid=badfbefb-7dd9-4278-9bf0-d05fc9415832
Enviado desde mi Redmi 3S mediante Tapatalk