1998 AUDI A4 ignition

01-19

Diagnostic Trouble Code
(DTC) Malfunction text
MIL switching
condition
SAE
VAG
P0322 16706 Ignition/Distributor Engine Speed Input Circuit No Signal immediately
P0327 16711 Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor) immediately
P0332 16716 Knock Sensor 2 Circuit Low Input (Bank 2) immediately
P0337 16721 Crankshaft Position Sensor Circuit Low Input immediately
P0401 16785 Exhaust Gas Recirculation Flow Insufficient Detected 2 Trips
P0402 16786 Exhaust Gas Recirculation Flow Excessive Detected 2 Trips
P0422 16806 Main Catalyst Efficiency Below Threshold (Bank 1) 2 Trips
P0432 16816 Main Catalyst Efficiency Below Threshold (Bank 2) 2 Trips
P0440 16824 Evaporative Emission Control System Malfunction 2 Trips
P0452 16836 Evaporative Emission Control System Pressure Sensor Low
Input immediately
P0453 16837 Evaporative Emission Control System Pressure Sensor High
Input immediately
P0461 16845 Fuel Level Sensor Circuit Range/Performance immediately
P0501 16885 Vehicle Speed Sensor Range/Performance immediately
Pa
ge 30 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

01-23

Diagnostic Trouble Code (DTC)
Malfunction text
MIL switching condition
SAE
VAG
P1325 17733 Cyl.1-Knock Control Limit Attained off
P1326 17734 Cyl.2-Knock Control Limit Attained off
P1327 17735 Cyl.3-Knock Control Limit Attained off
P1328 17736 Cyl.4-Knock Control Limit Attained off
P1329 17737 Cyl.5-Knock Control Limit Attained off
P1330 17738 Cyl.6-Knock Control Limit Attained off
P1339 17747 Crankshaft Pos./Engine Speed Sensors Cross connected immediately
P1341 17749 Ignition Coil Power Output Stage 1 Short to Ground immediately
P1343 17751 Ignition Coil Power Output Stage 2 Short to Ground immediately
P1345 17753 Ignition Coil Power Output Stage 3 Short to Ground immediately
P1391 17799 Camshaft Pos.Sensor (B2) Short to Ground immediately
P1392 17800 Camshaft Pos.Sensor Open Circ. (B2) Short to B+ immediately
P1393 17801 Ignition Coil Power Output Stage 1 Electrical Malfunction immediately
P1394 17802 Ignition Coil Power Output Stage 2 Electrical Malfunction immediately
P1395 17803 Ignition Coil Power Output Stage 3 Electrical Malfunction immediately
Pa
ge 34 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

01-30

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

Malfunction repair
P0117 / 16501
Engine Coolant
Temperature Circuit
Low Input Harness connector on Engine Coolant
Temperature (ECT) sensor -G62- loose or
corroded due to dampness 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, after test
drive check DTC memory again
MIL Status:
MIL lights up
immediately Wiring connection to Engine Coolant
Temperature (ECT) sensor -G62- faulty, or
sensor -G62- faulty

- Engine Coolant Temperature (ECT)
sensor -G62-, checking page 28
-25


Malfunction cause found: Yes
No

- Erase DTC memory, test drive, after test
drive check DTC memory again
For troubleshooting
Display groups 000,
001
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 "P0117 / 16501" is set as soon as the signal voltage drops below 0.10 volts for longer than 1 sec when
ignition is switched on (corresponds to a coolant temperature over 200 C (392 F).
Pa
ge 42 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

01-31

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

Malfunction repair
P0118 / 16502
Engine Coolant
Temperature Circuit
High Input Harness connector on Engine Coolant
Temperature (ECT) sensor -G62- 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 check
DTC memory again
MIL Status:
MIL lights up
immediately Wiring connection to Engine Coolant
Temperature (ECT) sensor -G62- faulty, or
sensor -G62- faulty

- Check Engine Coolant Temperature
(ECT) sensor -G62- page 28
-25


Malfunction cause found: Yes
No

- Erase DTC memory, test drive and check
DTC memory again
For troubleshooting
Display groups 000,
001
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 "P0118 / 16502" is set as soon as the signal voltage is over 4.98 volts for longer than 1 sec with ignition on
(corresponds to a coolant temperature below -50 C (-58 F)).
Pa
ge 43 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

01-54


Malfunction in spark plug(s) or ignition cable(s)
in bank 1

- Spark harness connector loose or faulty
- Check ignition cable for damage (e.g. cracks, traces of burns,
worn places)
- Check face side of spark plug

Malfunction cause found: Yes
No

- Erase DTC memory, test drive and check DTC memory

Malfunction in the fuel injectors in bank 1
because of
- Resistance in fuel injector connectors
- Fuel injector dirty, faulty or has carbon deposits

- Check harness connector on fuel injector for tight fit
- Check fuel injection quantity and for leaks in fuel injectors
page 24
-33


Malfunction cause found: Yes
No

- Erase DTC memory, test drive and check DTC memory

Intake valves have carbon deposits

- Check intake valves for carbon deposits, if necessary clean
valves

Malfunction cause found: Yes
No

- Erase DTC memory, test drive and check DTC memory

Continue troubleshooting per Diagnostic Trouble Code (DTC) table page 01
-60

Pa
ge 74 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

01-58


Malfunction on spark plug(s) or ignition cable(s)
of Bank 1

- Spark harness connector loose or faulty check- Check ignition cable for damage (e.g. cracks, traces of
burns, worn places)
- Check face side of spark plugs

Malfunction cause found: Yes
No

- Erase DTC memory, test drive and check DTC memory

Malfunction in the fuel injectors in Bank 2
because of
- Resistance in the fuel injector connectors
- Fuel injector that is dirty, faulty or has carbon
deposits

- Check harness connector on fuel injector for tight fit
- Check fuel injection quantity and for leaks page 24
-33

Malfunction cause found: Yes
No

- Erase DTC memory, test drive and check DTC memory

Intake valves have carbon deposits

- Check intake valves for carbon deposits, if necessary clean
valves

Malfunction cause found: Yes
No

- Erase DTC memory, test drive and check DTC memory

Continue Troubleshooting per Diagnostic Trouble Code (DTC) table page 01
-16

Pa
ge 81 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

01-63


Has combustion misfiring only been recognized on one
or two cylinders (2/4 or 3/5 or 1/6)?
No
Yes

- Spark harness connector loose or faulty check- Check ignition cable for damage (e.g. cracks, traces
of burns, worn places)
- Check face side of spark plug
- Fuel injector of the cylinder faulty; check fuel injector
page 24
-29


Malfunction cause found: Yes
No

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

Has combustion misfiring occurred on two cylinders
(2/4 or 3/5 or 1/6)?
No Yes

- Common ignition coil of both affected cylinders
faulty, check ignition coil page 28
-16


Malfunction cause found: Yes
No
Continued next page

- Erase DTC memory, test drive and check DTC
memory
Pa
ge 87 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

01-66


Has combustion misfiring been recognized on only
one or two cylinders (2/4 or 3/5 or 1/6)?
No
Yes

- Spark harness connector loose or faulty check- Check ignition cable for damage (e.g. cracks, traces
of burns, worn places)
- Check face side of spark plug
- Fuel injector of the cylinder faulty Check fuel
injector page 24
-29


Malfunction cause found: Yes
No


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

Has misfiring occurred on two cylinders (2/4 or 3/5 or
1/6)?
No Yes

- Common ignition coil for the two cylinders affected
faulty, check ignition coil page 28
-16


Malfunction cause found: Yes
No
Continued next page

- Erase DTC memory, test drive and check DTC
memory
Pa
ge 90 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