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 (ambient temperature sender at least 60 seconds, coolant temperature sender only after engine has been running for at least 30 minutes). If a fault is then no longer present, it is stored as being sporadic. Sporadic faults (temporary faults) are marked “sporadic” on the display. “Sporadic” means isolated or occasional occurrence. 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 eliminating an open circuit in the wiring in the event of a CAN bus fault, make sure the two signal wires of the relevant system form a twisted pair so as to avoid electromagnetic interference. t  Re-interrogate and erase the fault memory on completion of repair work and after checking system operation.

Output on -VAS 5051B-	Possible cause of trouble	Remedy
00562 Thermal oil level sender t  Open circuit/short to positive t  Short to earth	t  Open circuit or short to earth/positive in wiring to oil level/oil temperature sender -G266-	–  Use current flow diagram to check wiring and connectors
t  Implausible signal	t  Oil level/oil temperature sender -G266- defective	–  Replace oil level/oil temperature sender -G266- → Rep. Gr.17

Output on -VAS 5051B-	Possible cause of trouble	Remedy
00667 Ambient temperature signal t  Open circuit/short to positive t  Short to earth t  Implausible signal	t  Open circuit or short to earth/positive in wiring to ambient temperature sensor -G17-	–  Use current flow diagram to check wiring and connectors
	t  Ambient temperature sensor -G17- defective	–  Replace ambient temperature sensor -G17- → Rep. Gr.87
	t  Vehicles with air conditioner: Air conditioning system/Climatronic operating and display unit -E87- defective	–  Interrogate air conditioner fault memory → Rep. Gr.01

Output on -VAS 5051B-	Possible cause of trouble	Remedy
00668 Electrical system voltage term. 30 Power supply too low	t  Battery discharged/defective	–  Charge/replace battery → Rep. Gr.27
	t  Battery voltage less than 9.5 V t  Alternator defective	–  Check alternator → Rep. Gr.27
	t  Short circuit in vehicle electrical system	–  Implement function “00 - Automatic test sequence” to determine the control unit responsible for the fault message; check power supply of defective control unit –  Erase fault memory and continue to monitor the vehicle

Output on -VAS 5051B-	Possible cause of trouble	Remedy
00771 Fuel gauge sender -G- t  Open circuit/short to positive t  Short to earth	t  Open circuit or short to earth/positive in wiring to component; on four-wheel drive vehicles possibly also fuel gauge sender 2 -G169- or fuel gauge sender 3 -G237-	–  Use current flow diagram to check wiring and connectors
	t  Fuel gauge sender -G- defective; on four-wheel drive vehicles possibly also fuel gauge sender 2 -G169- or fuel gauge sender 3 -G237-	–  Check fuel gauge sender; on four-wheel drive vehicles possibly also fuel gauge sender 2 -G169- or fuel gauge sender 3 -G237- → Rep. Gr.20

Output on -VAS 5051B-	Possible cause of trouble	Remedy
00779 Ambient temperature sensor t  Open circuit/short to positive t  Short to earth	t  Open circuit or short to earth/positive in wiring to ambient temperature sensor -G17-	–  Use current flow diagram to check wiring and connectors
	t  Ambient temperature sensor -G17- defective	–  Replace ambient temperature sensor -G17- → Rep. Gr.87

Output on -VAS 5051B-	Possible cause of trouble	Remedy
01039 Coolant temperature sender -G2- t  Open circuit/short to positive t  Short to earth	t  Open circuit or short to earth/positive in wiring to component	–  Use current flow diagram to check wiring and connectors
	t  Coolant temperature sender -G2- defective	–  Replace coolant temperature sender -G2- → Rep. Gr.23 or → Rep. Gr.24

Output on -VAS 5051B-	Possible cause of trouble	Remedy
01300 Navigation system control unit No communication	t  Open circuit or short to earth/positive in CAN bus wiring	–  Read “measured value block 140” → Anchor –  Check CAN bus wiring → Chapter
	t  Display in “measured value block 140” for navigation system control unit is not “1” → Anchor t  Adaption for dash panel insert not implemented properly	–  Select “adaption channel 62” and enter correct adaption value → Anchor
	t  Navigation system with CD drive control unit -J401- defective	–  Replace navigation system with CD drive control unit -J401- → Rep. Gr.91

Output on -VAS 5051B-	Possible cause of trouble	Remedy
01302 Telematics control unit No communication	t  Open circuit or short to earth/positive in CAN bus wiring	–  Read “measured value block 140” → Anchor –  Check CAN bus wiring → Chapter
	t  Display in “measured value block 140” for telematics control unit is not “1” → Anchor t  Adaption for dash panel insert not implemented properly	–  Select “adaption channel 62” and enter correct adaption value → Anchor
	t  Telematics control unit defective	–  Replace telematics control unit → Rep. Gr.91

Output on -VAS 5051B-	Possible cause of trouble	Remedy
01303 Telephone No communication	t  Open circuit or short to earth/positive in CAN bus wiring	–  Read “measured value block 140” → Anchor –  Check CAN bus wiring → Chapter
	t  Open circuit in power supply of telephone transmitter and receiver unit	–  Use current flow diagram to check wiring and connectors
	t  Display in “measured value block 140” for telephone transmitter and receiver unit is not “1” → Anchor t  Adaption for dash panel insert not implemented properly	–  Select “adaption channel 62” and enter correct adaption value → Anchor
	t  Telephone transmitter and receiver unit defective	–  Replace telephone transmitter and receiver unit → Rep. Gr.91

Output on -VAS 5051B-	Possible cause of trouble	Remedy
01304 Radio No communication	t  Open circuit or short to earth/positive in CAN bus wiring	–  Read “measured value block 140” → Anchor –  Check CAN bus wiring → Chapter
	t  Open circuit in power supply for telephone transmitter and receiver unit	–  Use current flow diagram to check wiring and connectors
	t  Display in “measured value block 140” for radio is not “1” → Anchor t  Radio has no CAN capability t  Adaption for dash panel insert not implemented properly	–  Select “adaption channel 62” and enter correct adaption value → Anchor
	t  Radio defective	–  Replace radio → Rep. Gr.91

Output on -VAS 5051B-	Possible cause of trouble	Remedy
01311 Information data bus t  Defective	t  Open circuit or short to earth/positive in CAN bus wiring at one control unit in information data bus (display)	–  Check CAN bus wiring → Chapter
	t  Display in “measured value block 140” for control unit with CAN capability is not “1” → Anchor t  Adaption for dash panel insert not implemented properly	–  Select “adaption channel 62” and enter correct adaption value → Anchor
t  In one-wire operation	t  CAN bus only operating on one wire	–  Check CAN bus wiring → Chapter

Output on -VAS 5051B-	Possible cause of trouble	Remedy
01312 Drive system data bus defective	t  Open circuit or short to earth/positive in CAN bus wiring at one control unit in drive system data bus	–  Check CAN bus wiring → Chapter
	t  Display in “measured value block 125” for control unit with CAN capability is not “1” → Anchor t  Adaption for dash panel insert not implemented properly	–  Select “adaption channel 60” and enter correct adaption value → Anchor

Output on -VAS 5051B-	Possible cause of trouble	Remedy
01314 Engine control unit No communication	t  Open circuit or short to earth/positive in CAN bus wiring	–  Check CAN bus wiring → Chapter
	t  Display in “measured value block 125” for engine control unit is not “1” → Anchor t  Adaption for dash panel insert not implemented properly	–  Select “adaption channel 60” and enter correct adaption value → Anchor
	t  Engine control unit defective	–  Replace engine control unit → Rep. Gr.23 or → Rep. Gr.24

Output on -VAS 5051B-	Possible cause of trouble	Remedy
01315 Gearbox control unit No communication	t  Open circuit or short to earth/positive in CAN bus wiring	–  Check CAN bus wiring → Chapter
	t  Display in “measured value block 125” for automatic gearbox control unit is not “1” → Anchor t  Adaption for dash panel insert not implemented properly	–  Select “adaption channel 60” and enter correct adaption value → Anchor
	t  Automatic gearbox control unit defective	–  Replace automatic gearbox control unit → Rep. Gr.01 or → Rep. Gr.38

Output on -VAS 5051B-	Possible cause of trouble	Remedy
01402 Navigation signal wire Implausible signal	t  Open circuit on clock, enable or signal wire	–  Use current flow diagram to check wiring and connectors of signal wires
	t  Fault in interface between navigation unit and dash panel insert t  Fault caused by electromagnetic interference inside and outside the vehicle	–  Check causes of faults → Rep. Gr.91

Output on -VAS 5051B-	Possible cause of trouble	Remedy
65535 Control unit defective	t  Dash panel insert defective	–  Replace dash panel insert → Rep. Gr.90