With VAG 1551 Scan Tool

On Board Diagnostic (OBD), technical data
Diagnostic Trouble Code (DTC) memory
- Permanent memory; the contents are retained even if the power supply is switched off

Data output
- Rapid data transfer (operating mode 1)
- The ABS warning light -K47-, the red brake warning symbol and the traction control indicator light -K86- (on vehicles with ASR) in the instrument cluster come on if a malfunction is recognized, and the ABS/EDL and ASR system is switched off.

Functions
01-Check Control Module Versions. Check Control Module Versions (Scan Tool Function 01)
02-Check DTC Memory. Checking DTC Memory (Scan Tools Function 02)
03-Output Diagnostic Test Mode. Output Diagnostic Test Mode (DTM) (Scan Tool Function 03)
05-Erase DTC Memory. Erase DTC Memory
06-End Output. End Output
07-Code Control Module. Programming and Relearning
08-Read Measuring Value Block. Read Measuring Valve Block