torque AUDI A4 1997 B5 / 1.G AFC Engine On Board Diagnostic Multiport Fuel Injection Workshop Manual

01-25

Diagnostic Trouble Code
(DTC) Malfunction text
MIL switching
condition
SAE
VAG
P1600 18008 Power Supply (B+) Terminal 15 Low Voltage off
P1602 18010 Power Supply (B+) Terminal 30 Low Voltage immediately
P1606 18014 Rough Road Spec Engine Torque ABS-SG Electrical
Malfunction off
P1611 18019 MIL Call-up Circ./Transm. Control Module Short to Ground immediately
P1612 18020 ECM Incorrectly Coded immediately
P1613 18021 MIL Call-up Circ.Open Short to B+ immediately
P1746 00532 Repair Manual, 5 Spd. Automatic Transmission 01V

P1748 65535 Repair Manual, 5 Spd. Automatic Transmission 01V
P1813 00264 Repair Manual, 5 Spd. Automatic Transmission 01V
P1818 00266 Repair Manual, 5 Spd. Automatic Transmission 01V
P1823 00268 Repair Manual, 5 Spd. Automatic Transmission 01V
P1828 00270 Repair Manual, 5 Spd. Automatic Transmission 01V Pa
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(OBD
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port Fuel In
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(MFI
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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
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(OBD
) - Multi
port Fuel In
jection
(MFI
)
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play?action=Goto&t
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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

No
- Erase DTC memory, test drive and after test
drive, check DTC memory again

Was the control llimit
reached on 3 cylinders in one
bank? P1335, P1326, P1327 or
P1328, P1329, P1330 are in
the DTC memory.
No
Continued next page
Yes

- Knock Sensor for corresponding bank (-G61- or
-G66-) loose and/or tightening torque not 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 wiring of
corresponding knock sensor or knock sensor
faulty check Knock Sensors (KS) 1 -G61- and
2 -G66- page 28
-29

Pa
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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

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

Pa
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gnostic
(OBD
) - Multi
port Fuel In
jection
(MFI
)
11/22/2002 htt
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play?action=Goto&t
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pair&id=AUDI.B5.FU01.01.1

01-143

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

Malfunction repair
P1612 / 18020
ECM Incorrectly
Coded Malfunction P1606 / 18014 "Rough
Road Spec Engine Torque ABS-SG
Electrical Malfunction" also stored in DTC
memory
No
Yes

- Engine control module incorrectly coded

Cause: The vehicle is equipped with traction
control, but coding was done for vehicle
without traction control.
Remedy: code vehicle correctly according to
coding table.

Malfunction cause found: Yes
No

- Erase DTC memory, take test drive, after test
drive check DTC memory again
MIL Status:
Malfunction not
displayed by MIL Engine control module incorrectly coded


Cause: Vehicle is equipped with automatic
transmission, but was coded for manual
transmission or otherwise incorrectly coded
Remedy: code vehicle correctly according to
coding table.

Malfunction cause found: Yes


- Erase DTC memory, test drive, after test drive
check DTC memory again
Pa
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gnostic
(OBD
) - Multi
port Fuel In
jection
(MFI
)
11/22/2002 htt
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play?action=Goto&t
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pair&id=AUDI.B5.FU01.01.1

01-196
Display groups 013 and 014
Notes on display fields 2, 3 and 4:
Knock control is active starting at an engine load greater than 40%. If the engine load exceeds 40%, the current ignition timing
point retarding value is displayed; if the engine load drops below 40%, the last values used are displayed constantly.
If there is audible knocking without recognizable retarding of the ignition timing point, the engine speed should be increased
over 3500 RPM for 5 seconds to initiate the knock sensor malfunction recognition (On Board Diagnostic).
If an ignition timing point retarding value of one cylinder deviates from the others, the following malfunctions are possible:

Loose subassemblies
Corrosion on the harness connector
Engine damage (e.g. oil combustion with faulty piston)
If there are high ignition timing point retarding values on all cylinders of bank 1 or bank 2, the following malfunctions are
possible:
Corrosion on the harness connector display groups 015 and 016 Knock sensor tightening torque, 20 Nm (14 ft lb), not OK
Open circuit display groups 015 and 016 Knock sensor faulty
Pa
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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
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pair&id=AUDI.B5.FU01.01.1

01-204
Display group 022
Notes:
Display group 022 should only be considered on vehicles with traction control (ATC).
Vehicles with traction control (ATC) can be recognized by the ATC indicator light in the instrument cluster and/or ABS (ATC)
On Board Diagnostic (OBD).
Repair Manual, Brake System On Board Diagnostic (OBD), Repair Group 01.

The wheel slip information for traction control (ATC) is calculated in the ABS control module. If slip is recognized, the ABS
control module requests a reduction in torque from the Engine Control Module (ECM). This torque reduction is divided into 12
reducing stages.
With a cold engine, coolant temperature less than 20 C (68 F), the reduction of engine torque is obtained:
With retarded ignition timing angle for lower reducing stages (1-5)
By brief shut-off of individual fuel injectors for higher reducing stages (6-12)
If the engine is warm, coolant temperature greater than 40 C (104 F), the engine torque reduction is obtained only by briefly
switching off individual fuel injectors.
Display shows
Display/specified value
Designation
Basic setting 22
1 2 3 4 0 - 12 1 = Reducing stages

_._ crankshaft
2 = Ignition timing point retarded by ATC (only with cold engine)
Pa
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(OBD
) - Multi
port Fuel In
jection
(MFI
)
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-68 Nm to 250 Nm 3 = Reduced engine torque (actual moment)
-68 Nm to 250 Nm 4 = Unreduced engine torque
Pa
ge 288 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