engine AUDI A4 1996 B5 / 1.G AFC Engine On Board Diagnostic Multiport Fuel Injection Owners Manual

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

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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.
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jection
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)
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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.
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jection
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01-115


Camshaft Position (CMP) sensor -G40- oily or dirty
on the inside because of leaking seal on the cylinder
head.

- Camshaft Position (CMP) sensor -G40- and check for
contamination. If it is oily, replace seal on cylinder head

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
Notes:

The malfunction "P1340 / 17748" is set as soon as the crankshaft position sensor signal is always "high" at an engine
speed between 50 RPM and 4000 RPM and with more than 20 crankshaft sensor signals recognized.
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) - Multi
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jection
(MFI
)
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No
drive, check DTC memory again

Wiring connection to ignition coil power
output stage -N122- faulty or power output
stage -N122- faulty

- Check Power output stage -N122- for
ignition coils page 28
-13


Malfunction cause found: Yes
No

- Erase DTC memory, test drive and after test
drive, check DTC memory again
MIL Status:
MIL lights up
immediately
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 power output stage is not integrated in the Engine Control Module (ECM) -J192-, it is a separate component.
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jection
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01-118


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 "P1391 / 17799" is set as soon as the crankshaft position sensor signal is always "low" at an engine speed
between 50 RPM and 400 RPM and with more than 3 crankshaft sensor signals recognized.
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) - Multi
port Fuel In
jection
(MFI
)
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01-120


Camshaft Position (CMP) sensor -G40- oily or
dirty on the inside because of leaky seal on cylinder
head

- Remove Camshaft Position (CMP) sensor -G40- and
check for contamination. If it is oily, replace seal on cylinder
head

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

check DTC memory and test drive check DTC
memory
Notes:

The malfunction "P1392 / 17800"is set as soon as the crankshaft position sensor signal is always "high" at an engine
speed between 50 RPM and 4000 RPM and with more than 20 crankshaft sensor signals recognized.
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ge 162 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
test drive, check DTC memory again

Wiring connection to Power output stage -
N122- for ignition coils or -N122- faulty

- Check Power output stage -N122- for
ignition coils page 28
-13


Malfunction cause found: Yes
No

- Erase DTC memory, test drive and after
test drive, check DTC memory again
MIL Status:
MIL lights up
immediately
Engine Control Module (ECM) -J192-
faulty

- Replace and code engine control module
page 01
-265
check DTC memory and
test drive check DTC memory
Note:
The power output stage is not integrated in the Engine Control Module (ECM) -J192-, it is a separate component.
Pa
ge 164 of 366 On Board Dia
gnostic
(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

01-122

Output on GST and/or on
VAG 1551 scan tool Possible malfunction
cause
Malfunction repair
P1396 / 17804
Engine Speed Sensor
Missing Tooth Starter ring gear
damaged (teeth broken off)


- Remove starter and carry out visual inspection of the
starter ring gear. If broken teeth are found, replace
starter ring gear
MIL Status:
MIL lights up immediately Malfunction cause found:
Yes


- Erase DTC memory, test drive and after test drive,
check DTC memory again
For troubleshooting
Display group 037

Note:
The malfunction "P1396 / 17804" is set when the engine speed sensor does not supply 270 engine speed pulses per engine
revolution.
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jection
(MFI
)
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01-123

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

Malfunction repair
P1400 / 17808
EGR Valve Circ.
Electrical Malfunction Harness connector for EGR vacuum
regulator solenoid valve -N18- 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 to EGR vacuum
regulator solenoid valve -N18- faulty or valve
-N18- faulty

- EGR vacuum regulator solenoid valve -
N18- page 24
-67


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:
The malfunction "P1400 / 17808" is set after engine start at an engine speed less than 900 RPM, an engine load less than
25% and EGR valve duty cycle less than 20%, as soon as the control module output of the EGR valve is "low" for longer than
1.2 sec.
Pa
ge 166 of 366 On Board Dia
gnostic
(OBD
) - Multi
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jection
(MFI
)
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yp
e=re
pair&id=AUDI.B5.FU01.01.1