car is an X reg A3 1.8T
we had an isssue with bad idling and stalling... now the ECU warning light is on and it has NO performance
im assuming its in Limp home mode
The car has an ECON button.. is there a diagnostic sequence I can enter to check the car?
ive tried the search function on here but it yeilds no results
any help woul dbe MOST appreciated!