1999 AUDI A4 sensor

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

01-24

Diagnostic Trouble Code
(DTC) Malfunction text
MIL switching
condition
SAE
VAG
P1396 17804 Engine Speed Sensor Missing Tooth immediately
P1400 17808 EGR Valve Circ. Electrical Malfunction immediately
P1402 17810 EGR Valve Circ. Short to B+ immediately
P1407 17815 EGR Temp.Sensor Signal too Low immediately
P1408 17816 EGR Temp.Sensor Signal too High immediately
P1409 17817 Tank Ventilation Valve Electrical Malfunction immediately
P1410 17818 Tank Ventilation Valve Short to B+ immediately
P1500 17908 Fuel Pump Relay Circ. Electrical Malfunction immediately
P1504 17912 Intake Air Sys.Bypass Air Determined immediately
P1505 17913 CTP Switch does not Close Open Circuit immediately
P1506 17914 CTP Switch does not Open Short to Ground immediately
P1509 17917 IAC Circ. Electrical Malfunction immediately
P1510 17918 IAC Circ. Short to B+ immediately
P1511 17919 Intake Manifold Changeover Valve Circ. Electrical
Malfunction off
P1512 17920 Intake Manifold Changeover Valve Circ. Short to B+ off
Pa
ge 35 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

01-27

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

Malfunction repair
P0102 / 16486
Mass or Volume Air Flow
Circuit Low Input Harness connector on Mass Air Flow
(MAF) sensor -G70- loose or corrosion
because of moisture in the harness
connector

- Check harness connector for tight fit and
contact corrosion, if necessary reconnect
and/or clean

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 Mass Air Flow (MAF)
sensor -G70- faulty or sensor -G70- faulty

- Check Mass Air Flow (MAF) sensor -
G70- page 24
-81


Malfunction cause found: Yes
No

- Erase DTC memory, test drive, after test
drive check DTC memory again
For troubleshooting
Display groups 000, 001,
019
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 "P0102 / 16486" is set as soon as the signal voltage drops below 0.5 volts for longer than 0.3 sec (engine
speed under 2000 RPM).
Pa
ge 39 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

01-28

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

Malfunction repair
P0103 / 16487
Mass or Volume Air Flow
Circuit High Input Harness connector on Mass Air Flow
(MAF) sensor -G70- loose or corroded due
to dampness in the harness connector

- Check harness connector for tight fit and
contact corrosion, if necessary retighten
and/or clean

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 Mass Air Flow
(MAF) sensor -G70- faulty or sensor -G70-
faulty

- Check Mass Air Flow (MAF) sensor -
G70- page 24
-81


Malfunction cause found: Yes
No

- Erase DTC memory, test drive, after test
drive check DTC memory again
For troubleshooting
Display groups 000, 001,
019
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 "P0103 / 16487" is set as soon as the signal voltage rises above 5 volts for longer than 0.5 sec (engine
speed below 2000 RPM).
Pa
ge 40 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

01-29

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

Malfunction repair
P0116 / 16500
Engine Coolant Temperature
Circuit Range/Performance
Problem 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 conection 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 "P0116 / 16500" is set as soon as the coolant temperature lies under 55 C (131 F) after engine start, but
18 minutes later the temperature has not risen to over 70 C (158 F).
Pa
ge 41 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

01-32

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

Malfunction repair
P0120 / 16504
Throttle Position Sensor
A Circuit Malfunction Harness connector on Throttle Position
(TP) sensor -G69- 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

Malfunction cause found: Yes
No

- Erase DTC memory, test drive and check
DTC memory again
MIL Status:
MIL lights up
immediately Closed Throttle Position (CTP) switch -
F60- in throttle position sensor does not
open or is faulty

- Check and adjust Closed Throttle Position
(CTP) switch -F60- page 24
-73

Note:
The malfunction P1506 /
17914 is also stored Malfunction cause found: Yes
No

- Erase DTC memory, test drive and check
DTC memory again
For troubleshooting
Display group 002
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 "P0120 / 16504" is set, with idle switch closed, as soon as a position sensor signal voltage of over 0.72 volts
is recognized for longer than 2 sec. (corresponds to a throttle opening of more than 7 ).
Pa
ge 44 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