1996 AUDI A4 sensor

01-65

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

Malfunction repair
P0300 / 16684
Random Misfire Detected
_______________________
P0304 / 16688
Cylinder 4 Misfire Detected Malfunction P1250 / 17658 "Fuel
Level Too Low" also in DTC
memory
No
Yes

- For malfunctions that can be caused by
fuel problems (e.g. fuel system too lean), the
malfunction "Fuel Level Too Low" is also set
if there is less than 12 liters (12.7 qt.) fuel in
the tank check tank level and fill tank if
necessary
_______________________
P0305 / 16689
Cylinder 5 Misfire Detected Malfunction cause found: Yes
No

- Erase DTC memory, test drive and check
DTC memory again
_______________________
P0306 / 16690
Cylinder 6 Misfire Detected
_______________________ When combustion misfiring is
recognized, are there other
Diagnostic Trouble Codes (DTC)
(e.g. fuel injector, Oxygen Sensor
Proben, Fuel system etc.) in DTC
memory
No Yes

- The combustion misfiring that has been
recognized is a resulting malfunction from
the stored Diagnostic Trouble Codes (DTC)
First repair this malfunction according to
Diagnostic Trouble Code (DTC) table
MIL Status:
MIL lights up or blinks
For troubleshooting Display
groups 031, 038, 039
Malfunction cause found: Yes
No
Continued next page

- Erase DTC memory, test drive and check
DTC memory again
Pa
ge 89 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

01-68

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

Malfunction repair
P0322 / 16706
Ignition/Distributor Engine
Speed Input Circuit No
Signal Malfunction P1339 / 17747
"Crankshaft Pos./Engine Speed
Sensors Cross connected" also in
DTC memory
No
Yes

- 3-pin harness connector on Crankshaft Position
(CKP) sensor -G4- and engine speed (RPM) sensor
-G28- transposed disconnect both connectors and
connect correctly; installation location page 28
-7

Malfunction cause found: Yes
No

- Erase DTC memory, test drive and check DTC
memory again
MIL Status:
MIL lights up
immediately
Harness connector for engine
speed (RPM) sensor -G28- 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 28
-7

Malfunction cause found: Yes
No

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

Holding socket for engine
speed (RPM) sensor -G28- loose
or -G28- incorrectly adjusted

- Check mounting
- Adjust engine speed bracket page 28
-23

Malfunction cause found: Yes
No
Continued next page

- Erase DTC memory, test drive and check DTC
memory again
Pa
ge 92 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

01-69


Metal chips on engine speed (RPM) sensor -G28- or
distance from the engine speed (RPM) sensor -G28- to the
flywheel ring greater than 1.2 mm (0.049 in.)

- Remove engine speed (RPM) sensor -G28-,
check for contamination, clean if necessary

Malfunction cause found: Yes
No

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

Wiring connection to engine speed (RPM) sensor -G28-
faulty or sensor -G28- faulty

- Check and adjust engine speed (RPM) sensor -
G28- page 28
-21


Malfunction cause found: Yes
No

- Erase DTC memory, test drive and 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 "P0322 / 16706" is recognized during engine start, no ignition or fuel injection occurs.
Pa
ge 93 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

01-70

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

Malfunction repair
P0327 / 16711
Knock Sensor 1 Circuit Low
Input (Bank 1 or Single
Sensor) Malfunction P0332 / 16716
"Knock Sensor 2 Circuit Low Input"
Also in DTC memory
No
Yes

- Check knock sensor 1 -G61- and knock
sensor 2 -G66- page 28
-29


Malfunction cause found: Yes
No

- Erase DTC memory, test drive and check
DTC memory again
MIL Status:
MIL lights up immediately
Harness connector for Knock Sensor
(KS) 1 -G61- 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
For troubleshooting
Display group 015
Malfunction cause found: Yes
No

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

Knock Sensor (KS) 1 -G61- loose

- Check mounting of knock sensor 1 -G61-
and if necessary retighten use insert
3247; tightening torque 20 Nm (15 ft lb)

Malfunction cause found: Yes
No

- Erase DTC memory, test drive and check
DTC memory again
Pa
ge 94 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

01-71


Wiring connection to Knock Sensor (KS) 1 -
G61- faulty, or sensor -G61- faulty

- Check knock sensor 1 -G61- page 28
-29

Malfunction cause found: Yes
No

- Erase DTC memory, test drive and 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 "P0327 / 16711" is set if the output voltage of the knock sensor is too low (below 0.2 V) (coolant temperature
over 20 C (68 F)/ engine speed greater than 3500 RPM and engine load greater than 16%). The ignition angle is then
retarded by 12 crankshaft in the knocking areas of the map (engine load greater than 40%).
Pa
ge 96 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

01-72

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

Malfunction repair
P0332 / 16716
Knock Sensor 2 Circuit
Low Input (Bank 2) Malfunction P0327 / 16711 "Knock
Sensor 1 Circuit Low Input (Bank 1 or
Single Sensor)" also in DTC memory
No
Yes

- Check knock sensor 1 -G61- and knock
sensor 2 -G66- page 28
-29


Malfunction cause found: Yes
No

- Erase DTC memory, test drive, and after
test drive, check DTC memory again
MIL Status:
MIL lights up
immediately
Harness connector for Knock Sensor
(KS) 2 -G66- 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
For troubleshooting
Display group 016
Knock Sensor (KS) 2 -G66- loose

- Check mounting of knock sensor 2 -G66-
and if necessary retighten use insert 3247;
tightening torque 20 Nm (15 ft lb)

Malfunction cause found: Yes
No

- Erase DTC memory, test drive and after test
drive, check DTC memory again
Pa
ge 97 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

01-73


Wiring connection to Knock Sensor (KS) 2 -
G66- faulty or sensor -G66- faulty

- Check knock sensor 2 -G66- page 28
-29

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 "P0332 / 16716" is set when the knock sensor output voltage is too low (under 0.2 V) (coolant temperature
over 20 C (68 F) / engine speed greater than 3500 RPM and engine load greater than 16%). The ignition angle is then
retarded by 12 crankshaft in the knocking ranges of the map (engine load greater than 40%).
Pa
ge 99 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

01-74

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

Malfunction repair
P0337 / 16721
Crankshaft Position
Sensor Circuit Low
Input Harness connector for Crankshaft Position
(CKP) sensor -G4- 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 28
-7

Malfunction cause found: Yes
No

- Erase DTC memory, test drive and after
test drive, check DTC memory again
MIL Status:
MIL lights up
immediately Crankshaft Position (CKP) sensor -G4-
loose or distance to groove on crankshaft
counterweight greater than 1.3 mm (0.053
in.)

- Check crankshaft position sensor -G4- for
correct installation and tight fit

Malfunction cause found: Yes
No

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

Wiring connection to Crankshaft Position
(CKP) sensor -G4- faulty, or sensor -G4-
faulty

- Check crankshaft position sensor -G4-
page 28
-19


Malfunction cause found: Yes
No

- Erase DTC memory, test drive and after
test drive, check DTC memory again
Pa
ge 100 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