light AUDI A4 1998 B5 / 1.G AFC Engine On Board Diagnostic Multiport Fuel Injection Manual PDF

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.
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jection
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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.
Pa
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jection
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e=re
pair&id=AUDI.B5.FU01.01.1

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
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(OBD
) - Multi
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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

01-124

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

Malfunction repair
P1402 / 17810
EGR Valve Circ.
Short to B+ 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, test
drive and check DTC memory
Notes:
The malfunction "P1402 / 17810" is set after engine start at an engine speed between 1000 RPM and 3500 RPM, an engine
load between 33% and 66% and an EGR valve duty cycle greater than 30%, as soon as the control module output of the EGR
valve is "high" for longer than 1.2 sec.
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
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU01.01.1

01-125

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

Malfunction repair
P1407 / 17815
EGR Temp.Sensor
Signal too Low Harness connector for EGR
temperature sensor -G98- 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 temperature
sensor -G98- faulty or sensor -G98- faulty

- Check EGR temperature sensor -G98-
page 24
-71


Malfunction cause found: Yes
No

- Erase DTC memory, test drive and after test
drive, check DTC memory again
For troubleshooting
Display group 017
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 "P1407 / 17815" is set after a cold start (coolant starting temperature less than 30 C (86 F) as soon as an
EGR temperature signal is received that lies over 200 C (392 F)
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
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU01.01.1

01-126

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

Malfunction repair
P1408 / 17816
EGR Temp.Sensor
Signal too High Harness connector for EGR
temperature sensor -G98- 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 temperature
sensor -G98- faulty or sensor -G98- faulty

- Check EGR temperature sensor -G98-
page 24
-71


Malfunction cause found: Yes
No

- Erase DTC memory, test drive and after test
drive, check DTC memory again
For troubleshooting
Display group 017
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 "P1408 / 17816" is set with open idle switch, a coolant temperature greater than 72 C (162 F), a throttle
angle less than 42.5 , a vehicle speed between 70 km/h and 105 km/h (44 and 66 mph), an EGR valve duty cycle greater
Pa
ge 169 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

01-127

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

Malfunction repair
P1409 / 17817
Tank Ventilation Valve
Electrical Malfunction Harness connector on Evaporative Emission
(EVAP) canister purge regulator valve -N80-
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 Evaporative Emission
(EVAP) canister purge regulator valve -N80-
faulty or valve -N80- faulty

- Check Evaporative Emission (EVAP)
canister purge regulator valve -N80-
page 24
-58


Malfunction cause found: Yes
No

- Erase DTC memory, test drive and after
test drive, check DTC memory again
For troubleshooting
Display group 009
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 "P1409 / 17817" is set after engine start at an engine speed less than 1100 RPM, engine load less than 33%
Pa
ge 171 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

01-128

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

Malfunction repair
P1410 / 17818
Tank Ventilation Valve
Short to B+ Harness connector on Evaporative Emission
(EVAP) canister purge regulator valve -N80-
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 Evaporative Emission
(EVAP) canister purge regulator valve -N80-
faulty or valve -N80- faulty

- Check Evaporative Emission (EVAP)
canister purge regulator valve -N80-
page 24
-58


Malfunction cause found: Yes
No

- Erase DTC memory, test drive and after
test drive, check DTC memory again
For troubleshooting
Display group 009
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 "P1410 / 17818" is set after engine start at an engine speed greater than 1250 RPM, an engine load greater
Pa
ge 173 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

01-129

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

Malfunction repair
P1500 / 17908
Fuel Pump Relay Circ.
Electrical Malfunction Wiring connection to Fuel Pump
(FP) relay -J17- faulty, or relay -J17-
faulty

- Check Intake manifold change-over valve -N156-
and control page 24
-64


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 malfunction "P1500 / 17908" is only stored as soon as the malfunctions "P1201 /17609", "P1202 / 17610", "P1203 /
17611", "P1204 / 17612", "P1205 / 17613", "P1206 / 17614" are stored simultaneously.
Pa
ge 175 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

01-130

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

Malfunction repair
P1504 / 17912
Intake Air Sys.Bypass Air
Determined Air leak in intake system

- Check intake system and repair leak

Malfunction cause found: Yes
No

- Erase DTC memory, test drive and after
test drive, check DTC memory again
MIL Status:
MIL lights up immediately
Idle Air Control (IAC) valve -N71-
sticks mechanically

- Check Idle Air Control (IAC) valve -N71-
page 24
-37


Malfunction cause found: Yes
No

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

Second stage of throttle body
does not close completely

- Check throttle body for mechanical damage
For troubleshooting Display
groups 018, 019
Malfunction cause found: Yes


- Erase DTC memory, test drive and after
test drive, check DTC memory again
Note:
If the malfunction "P1504 / 17912" is recognized, both power output stages ("+" and "-" output) are switched off. The Idle Air
Control (IAC) valve -N71- has no power and opens the limp home cross section.
Pa
ge 176 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