engine AUDI A4 2000 B5 / 1.G AFC Engine On Board Diagnostic Multiport Fuel Injection Manual Online

01-101

Output on GST and/or
on VAG 1551 scan tool Possible malfunction
cause
Malfunction repair

Engine Control Module
(ECM) -J192- faulty

- Replace and code engine control module page 01
-265

erase DTC memory and test drive check DTC
memory
Note:
The malfunction "P1109 / 17517" is set 123 sec after engine start with coolant temperature over 80 C (176 F), oxygen
sensor control active, engine speed between 1500 RPM and 5000 RPM, load between 19% and 80% and probe heater
switched on at least 45 sec., as soon as the signal voltage is less than 0.040 V for longer than 60 sec.
Pa
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jection
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)
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yp
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01-102

Output on GST and/or
on VAG 1551 scan tool
Possible malfunction cause

Malfunction repair
P1110 / 17518
Heating Circ. (B2-S2)
Short to B+ 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 location page 24
-1

Malfunction cause found: Yes
No

- Erase DTC memory, test drive and after
test drive, check DTC memory again
MIL Status:
MIL lights up
immediately
Wiring connection for Oxygen Sensor
(O2S) heater -Z30- (B2-S2) faulty, or heater
-Z30- faulty

- Check O2S heater -Z30- (B2-S2) page 24
-55


Malfunction cause found: Yes
No

- Erase DTC memory, test drive and after
test drive, 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 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
Pa
ge 136 of 366 On Board Dia
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(OBD
) - Multi
port Fuel In
jection
(MFI
)
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p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU01.01.1

fuel injectors faulty, or fuel injectors -N30-, -
N31- or -N32- faulty
29

MIL Status:
MIL lights up immediately Malfunction cause found: Yes
No

- Erase DTC memory, test drive
and after test drive, check DTC
memory again

Engine Control Module (ECM) -J192-
faulty

- Replace and code engine control
module page 01
-265
erase
DTC memory and test drive
check DTC memory Pa
ge 139 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

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
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) - Multi
port Fuel In
jection
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)
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play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU01.01.1

injectors faulty, or fuel injectors -N33-, -N83- or
-N84- faulty
24
-29

MIL Status:
MIL lights up immediately Malfunction cause found: Yes
No

- Erase DTC memory, test drive
and after test drive, check DTC
memory again

Engine Control Module (ECM) -J192- faulty

- Replace and code engine
control module page 01
-265

erase DTC memory and test
drive check DTC memory
Pa
ge 142 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

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
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(OBD
) - Multi
port Fuel In
jection
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)
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yp
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Short to B+
_______________________
MIL Status:
MIL lights up immediately

Malfunction cause found: Yes
No

- Erase DTC memory, test drive and
after test drive, check DTC memory
again

Engine Control Module (ECM) -
J192- faulty

- Replace and code engine control
module page 01
-265
erase DTC
memory and test drive check DTC
memory
Note:
If the malfunction "P1213 / 17621" and/or "P1214 / 17622" and/or "P1215 / 17623" is recognized by the engine control
module, the corresponding fuel injector is no longer triggered and the oxygen sensor control is blocked until ignition on.
Pa
ge 144 of 366 On Board Dia
gnostic
(OBD
) - Multi
port Fuel In
jection
(MFI
)
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p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU01.01.1

No
after test drive, check DTC memory
again

Engine Control Module (ECM) -
J192- faulty

- Replace and code engine control
module page 01
-265
erase DTC
memory and test drive check DTC
memory
Note:
If the malfunction "P1216 / 17624" and/or "P1217 / 17625" and/or "P1218 / 17626" is recognized by the engine control
module, the corresponding fuel injector is no longer triggered and the oxygen sensor control is blocked until ignition on.
Pa
ge 146 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

No
- Erase DTC memory, test drive and after test
drive, check DTC memory again

Was the control llimit
reached on 3 cylinders in one
bank? P1335, P1326, P1327 or
P1328, P1329, P1330 are in
the DTC memory.
No
Continued next page
Yes

- Knock Sensor for corresponding bank (-G61- or
-G66-) loose and/or tightening torque not OK;
check mounting of Knock Sensors (KS) 1 -G61-
and/or 2 -G66- and retighten if necessary use
insert 3247; tightening torque 20 Nm (15 ft lb) - Abnormal engine noises (e.g. subassemblies
loose) check - Open circuit/loose connection in wiring of
corresponding knock sensor or knock sensor
faulty check Knock Sensors (KS) 1 -G61- and
2 -G66- page 28
-29

Pa
ge 149 of 366 On Board Dia
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(OBD
) - Multi
port Fuel In
jection
(MFI
)
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play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU01.01.1

01-110

For troubleshooting
Display groups 011, 012,
013
Malfunction cause found: Yes
No

- Erase DTC memory, test drive and
after test drive, check DTC memory
again

Was the control limit reached on only
one cylinder? (e.g. only P1328 is in the
DTC memory)
Yes

- Abnormal engine noises (e.g.
subassemblies loose) check - Check engine for mechanical damage

Malfunction cause found: Yes


- Erase DTC memory, test drive and
after test drive, check DTC memory
again
Notes:

The malfunction "P1325 / 17733" and/or "P1326 / 17734" and/or "P1327 / 17735" is set as soon as the ignition angle is
fully retarded for longer than 180 sec during the trip.
Pa
ge 150 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