Anti-Theft Immobilizer on Board Diagnostic (OBD), Initiating

Anti-theft Immobilizer On Board Diagnostic (OBD), initiating

If malfunctions occur in the sensors and components being monitored, they will be stored in the Diagnostic Trouble Code (DTC) memory together with an indication of the type of malfunction.

A maximum of 4 DTCs can be stored simultaneously.

Sporadic malfunctions are automatically cancelled if they are not repeated in next 50 engine starts.

OBD must be initiated at the commencement of troubleshooting and the stored information checked with the VAG 1551/1552 Scan Tool or VAS 5051 Vehicle Diagnostic, Testing and Information System.


NOTE: The following description and illustrations deal specifically with the VAG 1551 scan tool. VAG 1552 and VAS 5051 procedures are similar.


The information displayed is used in conjunction with a DTC table which has information on the possible causes for pin-pointed repair steps.