check engine AUDI A4 1995 B5 / 1.G AFC Engine On Board Diagnostic Multiport Fuel Injection Repair Manual

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
)
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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
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(OBD
) - Multi
port Fuel In
jection
(MFI
)
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p://127.0.0.1:8080/audi/servlet/Dis
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yp
e=re
pair&id=AUDI.B5.FU01.01.1

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
)
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
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
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

01-110

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

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

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

- Knock Sensor for corresponding bank (-G61- or
-G66-) loose and/or tightening torque 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 the wiring of the
corresponding knock sensor or knock sensor
faulty Check Knock Sensors (KS) 1 -G61- and
2 -G66- page 28
-29

Pa
ge 152 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

01-112

For troubleshooting
Display group 011, 012, 014
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.
subassembly 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 "P1328 / 17736" and/or "P1329 / 17737" and/or "P1330 / 17738" is set as soon as the ignition angle is
fully retarded for longer than 180 sec during the trip.
Pa
ge 153 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

01-113

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

Malfunction repair
P1339 / 17747
Crankshaft Pos./Engine Speed
Sensors Cross connected 3-pin connector from Crankshaft
Position (CKP) sensor -G4- and engine
speed (RPM) sensor -G28-

- Disconnect both 3-pin harness
connectors and connect correctly,
installation location page 28
-7
P0322 / 16706
Ignition/Distributor Engine
Speed Input Circuit
No Signal
MIL Status:
MIL lights up immediately Malfunction cause found: Yes

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

The malfunction "P1339 / 17747" is set when -G4- and -G28- are transposed.
Pa
ge 154 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