Page 4 of 366
Function
04: Basic Setting Let engine idle
Function
07: Code Control Module Switch ignition on
Function
08: Read Measuring Value
Block Switch ignition on or let engine idle, or driving
Pa
ge 4 of 366 On Board Dia
gnostic
(OBD
) - Multi
port Fuel In
jection
(MFI
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU01.01.1
Page 14 of 366
01-9
For the function:
02: Check DTC
Memory - Let engine idle, or, crank
engine with starter for at
least 5 seconds without
switching ignition off
03: Output
Diagnostic
Test Mode - Switch ignition on
04: Basic Setting
- Let engine run or switch
ignition on
07: Code Control
Module - Switch ignition on
08: Read
Measuring
Value Block - Let engine run or switch
ignition on
- Switch printer on with PRINT button (indicator
light in the button lights up).
- Press button -1- for "rapid data transfer"
operating mode.
Rapid data transfer
HELP
Insert address word XX
Indicated on display
Note:
After inserting address word 00 and pressing -Q- button to confirm input,
Pa
ge 14 of 366 On Board Dia
gnostic
(OBD
) - Multi
port Fuel In
jection
(MFI
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU01.01.1
Page 59 of 366

01-43
Output on GST and/or
on VAG 1551 scan tool Possible malfunction cause
Malfunction repair
P0141 / 16525
O2 Sensor Heater Circuit
Malfunction (Bank 1
Sensor 2) Harness connector for Oxygen Sensor
(O2S) heater -Z29- (B1-S2) loose or
corroded due to moisture in the harness
connector
- Check harness connector for tight fit and
contact corrosion, if necessary reconnect
and/or clean, installation location page 24
-1
Malfunction cause found: Yes
No
- Erase DTC memory, test drive and check
DTC memory again
MIL Status:
MIL lights up immediately
Wiring connection for Oxygen Sensor
(O2S) heater -Z29- (B1-S2) faulty, or heater
-Z29- faulty
- Check O2S heater -Z29- (B1-S2) page 24
-55
Malfunction cause found: Yes
No
- Erase DTC memory, test drive and check
DTC memory again
For troubleshooting
Display group 040
Engine Control Module (ECM) -J192-
faulty
- Replace and code engine control module
page 01
-265
erase DTC memory and
test drive check DTC memory
Notes:
The heater for the O2S behind the Three Way Catalytic Converter (TWC) is not switched on immediately at engine start, but
only when the calculated exhaust gas temperature exceeds 308 C (586 F)( Read measuring value block, display group
42, channel 1).
Pa
ge 59 of 366 On Board Dia
gnostic
(OBD
) - Multi
port Fuel In
jection
(MFI
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU01.01.1
Page 69 of 366

01-51
Output on GST and/or
on VAG 1551 scan tool Possible malfunction cause
Malfunction repair
P0161 / 16545
O2 Sensor Heater Circuit
Malfunction (Bank 2
Sensor 2) Harness connector for Oxygen Sensor
(O2S) heater -Z30- (B2-S2) loose or
corroded due to moisture in the harness
connector
- Check harness connector for tight fit and
contact corrosion, if necessary reconnect
and/or clean, installation page 24
-1
Malfunction cause found: Yes
No
- Erase DTC memory, test drive and
check DTC memory again
MIL Status:
MIL lights up immediately
Wiring connection for Oxygen Sensor
(O2S) heater -Z30- (B2-S2) or heater -Z30-
(B2-S2) faulty
- Check O2S heater -Z30- (B2-S2)
page 24
-55
Malfunction cause found: Yes
No
- Erase DTC memory, test drive and
check DTC memory again
For troubleshooting
Display group 040
Engine Control Module (ECM) -J192-
faulty
- Replace and code engine control
module page 01
-265
erase DTC
memory and test drive check DTC
memory
Notes:
The heater for O2S behind Three Way Catalytic Converter (TWC) is not switched on immediately at engine start, but only
when the calculated exhaust gas temperature exceeds 308 C (586 F) ( Read measuring value block, display group 42,
channel 1).
Pa
ge 69 of 366 On Board Dia
gnostic
(OBD
) - Multi
port Fuel In
jection
(MFI
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU01.01.1
Page 128 of 366
01-96
Notes:
The heating for Oxygen Sensor Probes behind Three Way Catalytic Converter (TWC) is not switched on immediately at
engine start, but when the calculated exhaust gas temperature drops below 308 C (586 F) ( Read measuring value
block, display group 42, channel 1). The malfunction "P1105 / 17513" is set as soon as the probe heater is switched on (the vehicle must be driven approx. 60
sec. under load) and the heating current is greater than 10 A for longer than 80 ms.
Pa
ge 128 of 366 On Board Dia
gnostic
(OBD
) - Multi
port Fuel In
jection
(MFI
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU01.01.1
Page 137 of 366
block, display group 42, channel 1).
The malfunction "P1105 / 17513" is set as soon as the probe heater is switched on (the vehicle must be driven approx. 60
sec. under load) and the heating current is greater than 10 A for longer than 80 ms.
Pa
ge 137 of 366 On Board Dia
gnostic
(OBD
) - Multi
port Fuel In
jection
(MFI
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU01.01.1
Page 140 of 366
01-104
Notes:
If the malfunction "P1201 / 17609" and/or "P1202 / 17610" and/or "P1203 / 17611" is recognized by the engine control
module, the oxygen sensor control for bank 1 is blocked.
If all 6 fuel injectors are stored with the malfunction type "Cyl. X Electrical circuit electrical malfunction", the malfunction
"P1500 / 17908" is also stored.
Pa
ge 140 of 366 On Board Dia
gnostic
(OBD
) - Multi
port Fuel In
jection
(MFI
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU01.01.1
Page 143 of 366
01-106
Notes:
If the malfunction "P1204 / 7612" and/or "P1205 / 17613" and/or "P1206 / 17614" is recognized by the engine control
module, the oxygen sensor control for bank 2 is blocked.
If all 6 fuel injectors are stored with the malfunction type "Cyl. X Electrical circuit electrical malfunction" the malfunction
"P1500 / 17908" is also set.
Output on GST and/or on VAG
1551 scan tool Possible malfunction cause
Malfunction repair
P1213 / 17621
Cyl.1-Fuel Injector Circ.
Short to B+
-----------------------
P1214 / 17622
Cyl.2-Fuel Injector Circ.
Short to B+
_______________________
P1215 / 17623
Cyl.3-Fuel Injector Circ. Wiring connection to Cylinder 1, 2,
or 3 fuel injectors faulty, or fuel
injectors -N30-, -N31- or -N32- faulty
Yes
- Check fuel injectors page 24
-29
Pa
ge 143 of 366 On Board Dia
gnostic
(OBD
) - Multi
port Fuel In
jection
(MFI
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU01.01.1