Audi Workshop Service and Repair Manuals

Fault tables   Note t  Faults occurring in monitored sensors or components are stored in the fault memory together with an indication of the type of fault. t  The fault tables are arranged according to the 5-digit fault codes in the left-hand column. t  All static and sporadic faults are stored in the fault memory: A fault is identified as being static if it persists for at least 2 seconds. If a fault is then no longer present, it is stored as being “sporadic”. “Sporadic” additionally appears on the display. t  After switching on the ignition, all faults present are set to “sporadic” and only stored as being static if they are still present after checking. t  Sporadic faults which do not re-occur in the course of 50 driving cycles (ignition switched on for at least 5 minutes, vehicle speed greater than 30 km/h) are erased. t  Components indicated as being faulty by the -VAS 5051B- are not to be immediately replaced, but rather: Start by using the current flow diagram to check the wiring and connectors to these components. The earth connections are also to be checked on the basis of the current flow diagram. This is particularly important in the case of “sporadic” faults. t  On completion of repair work, interrogate fault memory again and erase.

Output on -VAS 5051B-	Possible cause of trouble	Remedy
00532 Supply voltage Signal too low	t  Open circuit or short to earth/positive in wiring	–  Use current flow diagram to check wiring and connectors

Output on -VAS 5051B-	Possible cause of trouble	Remedy
00625 Vehicle speed signal Implausible signal	Open circuit or short to earth/positive in wiring to ABS control unit -J104-	–  Use current flow diagram to check wiring and connectors
	t  ABS control unit -J104- defective	–  Replace ABS control unit -J104- → Rep. Gr.45

Output on -VAS 5051B-	Possible cause of trouble	Remedy
00774 Rear left vehicle level sender -G76- t  Open circuit/short to earth t  Short to positive	t  Open circuit or short to earth/positive in wiring to component	–  Use current flow diagram to check wiring and connectors
	t  Rear left vehicle level sender -G76- defective	–  Replace rear left vehicle level sender -G76- → Rep. Gr.42

Output on -VAS 5051B-	Possible cause of trouble	Remedy
00776 Front left vehicle level sender -G78- t  Open circuit/short to earth t  Short to positive	t  Open circuit or short to earth/positive in wiring to component	–  Use current flow diagram to check wiring and connectors
	t  Front left vehicle level sender -G78- defective	–  Replace front left vehicle level sender -G78- → Rep. Gr.40

Output on -VAS 5051B-	Possible cause of trouble	Remedy
01537 Vehicle level sender power supply t  Open circuit/short to earth t  Short to positive	t  Open circuit or short to earth/positive in wiring to component	–  Use current flow diagram to check wiring and connectors

Output on -VAS 5051B-	Possible cause of trouble	Remedy
01539 Headlights not adjusted	t  “Basic setting 2” not performed	–  Perform entire basic setting procedure → Chapter
	t  Vehicle level sender not in adjustment range	–  Replace holder for vehicle level sender → Rep. Gr.40

Output on -VAS 5051B-	Possible cause of trouble	Remedy
65535 Control unit defective	t  Headlight range control unit -J431- defective	–  Replace headlight range control unit -J431- → Rep. Gr.94