Page 52 of 79

01-97
Diagnostic Trouble Code (DTC) table
Notes:
Connect the VAG1551 Scan Tool (ST) and select address word 03 "Brake Electronics".
Check the control module version page 01
-52
and press the button.
Press buttons -0- and -2- to select "Check DTC Memory" function 02. Press -Q- button to confirm input.
Notes:
Each malfunction is assigned a 5-digit Diagnostic Trouble Code (DTC). The DTC is located in the left column of the DTC
table. If you have switched the printer on by pressing the "PRINT" button, the VAG1551 scan tool (ST) prints the message
identifying the malfunction and the DTC. Otherwise, DTCs are not displayed by the VAG1551 scan tool.
The contents of DTC memory remain stored until memory is erased, page 01
-15
.
Sporadically occurring malfunctions are identified via indication of "/SP" on the right-hand side of the display.
Static malfunctions that cannot be detected when the vehicle is stationary are also identified with "/SP" if the ignition has
been switched off and then on again.
The following DTC table includes all the DTCs that can be stored by the ABS control module -J104- and displayed and
printed out by the VAS5051 tester or VAG1551 scan tool. Malfunctions are listed by DTC number.
Pa
ge 52 of 79 Read Measurin
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)
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Page 53 of 79

01-98
Diagnostic Trouble Code (DTC) table Output on printer of VAG1551
Scan Tool (ST) Possible cause
Corrective action
DTC
00000
No malfunction recognized!
If this display appears, process
is concluded. No DTCs are
stored in DTC memory.
If corresponding warning lamps
light up anyway, check the
following points:
Voltage supply for ABS control module -J104-
below 10.5 volts at a vehicle speed less than 6
km/h. Open circuit in activation wire for ABS warning
light -K47- between ABS control module (w/EDL) -
J104- and instrument cluster combination
processor -J218-. - See section "Overview of
indicator lamp functions"
If no malfunction can be found, and there is still a
problem, there may be a mechanical malfunction (e.g.
solenoid valve sticking). - Expand troubleshooting to
include "Electrical test", function
test page 01
-68
.
Pa
ge 53 of 79 Read Measurin
g Value Block
(function 08
)
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yp
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Page 58 of 79

01-103
Output on printer of
VAG1551 Scan Tool
(ST) Possible cause
Corrective action
DTC
00283
Left front ABS wheel
speed sensor -G47-
or:
ABS wheel speed sensor rotor dirty or
damaged.
Excessive wheel bearing play.
Left rear ABS wheel speed sensor -G47-
installed incorrectly.
ABS wheel speed sensor -G47-
malfunctioning.
Short circuit to Ground (GND). Repair Manual, Brake System, Repair Group 45
Repair Manual, Suspension, Wheels, Steering,
Repair Group 40
Repair Manual, Brake System, Repair Group 45
- Check rotor, clean or replace
- Replace wheel bearing- Check installation of ABS wheel speed sensor.- "Read measuring value block" display group 1
page 01
-63
.
- Carry out "Electrical test", step 7 page 01
-68
.
- If neither the "Read measuring value block"
function nor the "electrical test" reveal any
malfunctions, check all wiring and harness
connectors for loose contacts.
Left front ABS wheel
speed sensor -G47-
Incorrect control module version.- Check control module version page 01
-52
.
Pa
ge 58 of 79 Read Measurin
g Value Block
(function 08
)
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yp
e=re
pair&id=AUDI.B5.SU02.01.8
Page 60 of 79

01-104
Output on printer of
VAG1551 Scan Tool
(ST) Possible cause
Corrective action
DTC
00285
Right front ABS
wheel speed sensor -
G45-
or:
ABS wheel speed sensor rotor dirty or
damaged.
Excessive wheel bearing play.
Left rear ABS wheel speed sensor -G45-
installed incorrectly.
ABS wheel speed sensor -G45-
malfunctioning.
Short circuit to Ground (GND). Repair Manual, Brake System, Repair Group 45
Repair Manual, Suspension, Wheels, Steering,
Repair Group 40
Repair Manual, Brake System, Repair Group 45
- Check rotor, clean or replace
- Replace wheel bearing- Check installation of ABS wheel speed sensor.- "Read measuring value block", display group 1
page 01
-63
.
- Carry out "Electrical test", step 8 page 01
-68
.
- If neither the "Read measuring value block"
function nor the "electrical test" reveal any
malfunctions, check all wiring and harness
connectors for loose contacts.
Right front ABS
wheel speed sensor -
Incorrect control module version.- Check control module version page 01
-52
.
Pa
ge 60 of 79 Read Measurin
g Value Block
(function 08
)
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e=re
pair&id=AUDI.B5.SU02.01.8
Page 62 of 79

01-105
Output on printer of
VAG1551 Scan Tool
(ST) Possible cause
Corrective action
DTC
00287
Right rear ABS
wheel speed sensor -
G44-
or:
ABS wheel speed sensor rotor dirty or
damaged.
Excessive wheel bearing play.
Left rear ABS wheel speed sensor -G44-
installed incorrectly.
ABS wheel speed sensor -G44-
malfunctioning.
Short circuit to Ground (GND). Repair Manual, Brake System, Repair Group 45
Repair Manual, Suspension, Wheels, Steering,
Repair Group 42
Repair Manual, Brake System, Repair Group 45
- Check rotor, clean or replace
- Replace wheel bearing- Check installation of ABS wheel speed sensor.- "Read measuring value block", display group 1
page 01
-63
.
- Carry out "Electrical test", step 10 page 01
-68
.
Right rear ABS
wheel speed sensor -
G44-
Open circuit/short
circuit to B+
Open circuit or short circuit to B+ in wiring
between ABS wheel speed sensor -G44-
and ABS control module -J104-. - If neither the "Read measuring value block"
function nor the "electrical test" reveal any
malfunctions, check all wiring and harness
connectors for loose contacts.
- If no problems are found after implementing the
Pa
ge 62 of 79 Read Measurin
g Value Block
(function 08
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.8
Page 64 of 79

01-106
Output on printer of
VAG1551 Scan Tool
(ST) Possible cause
Corrective action
DTC
00290
Left rear ABS wheel
speed sensor -G46-
or:
ABS wheel speed sensor rotor dirty or
damaged.
Excessive wheel bearing play.
Left rear ABS wheel speed sensor -G46-
installed incorrectly.
ABS wheel speed sensor -G46-
malfunctioning.
Short circuit to Ground (GND). Repair Manual, Brake System, Repair Group 45
Repair Manual, Suspension, Wheels, Steering,
Repair Group 42
Repair Manual, Brake System, Repair Group 45
- Check rotor, clean or replace
- Replace wheel bearing- Check installation of ABS wheel speed sensor.- "Read measuring value block", display group 1
page 01
-63
.
- Carry out "Electrical test", step 9 page 01
-68
.
Left rear ABS wheel
speed sensor -G46-
Open circuit/short
circuit to B+
Open circuit or short circuit to B+ in wiring
between ABS wheel speed sensor -G46-
and ABS control module -J104-. - If neither the "Read measuring value block"
function nor the "electrical test" reveal any
malfunctions, check all wiring and harness
connectors for loose contacts.
- If no problems are found after implementing the
Pa
ge 64 of 79 Read Measurin
g Value Block
(function 08
)
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p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.8
Page 66 of 79

01-107
Output on
printer of
VAG1551 Scan
Tool (ST) Possible cause
Corrective action
DTC
00301
ABS return flow
pump -V39 -
Open circuit in wire or contact resistance
in Ground (GND) connection or voltage
supply to ABS return flow pump -V39-.
Open circuit or short circuit to B+ or
Ground (GND) in wiring between ABS
return flow pump relay -J105- and the
ABS control module -J104-.
ABS return flow pump relay -J105-, ABS
return flow pump -V39- or hydraulic unit
malfunctioning. Electrical Wiring Diagrams, Troubleshooting &
Component Locations
Electrical Wiring Diagrams, Troubleshooting &
Component Locations - Locate and repair open circuit or contact resistance.
- Locate and repair open circuit or short circuit.- Check ABS return flow pump relay -J105-, ABS return
flow pump -V39- and ABS hydraulic unit -N55-, carry out
"electrical test", step 12+17 page 01
-68
, "Read
measuring value block", display group 2 page 01
-65
.
Pa
ge 66 of 79 Read Measurin
g Value Block
(function 08
)
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play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.8
Page 67 of 79

01-108
Output on printer
of VAG1551 Scan
Tool (ST) Possible cause
Corrective action
DTC
00302
ABS solenoid
valve relay -J106-
Faulty wire connection or excessively large
contact resistance in Ground (GND)
connection to ABS solenoid valve relay -
J106-.
Open circuit or short circuit to B+ or Ground
(GND) in wiring between ABS solenoid
valve relay -J106- and the ABS control
module -J104-.
ABS solenoid valve relay -J106- or ABS
hydraulic unit -N55- malfunctioning. Electrical Wiring Diagrams, Troubleshooting &
Component Locations
Electrical Wiring Diagrams, Troubleshooting &
Component Locations - Check Ground (GND) connection for contact
resistance and faulty wiring.
- Locate and repair open circuit or short circuit.- Check ABS solenoid valve relay -J106- and ABS
hydraulic unit, carry out "electrical test", step 11
page 01
-68
, "Read measuring value block", display
group 2 page 01
-65
.
Pa
ge 67 of 79 Read Measurin
g Value Block
(function 08
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.8