AUDI A6 1996 C5 / 2.G ATQ Engine Check DTC Memory And Erase DTC Memory Service Manual

01-47

DTC
DTC text
Corrective action
SAE
VAG


P1471 17879 Leak Detection Pump (LDP)
tank ventilation system
Short circuit to B+
1) - Leak Detection Pump (LDP) Checking
P1472 17880 Leak Detection Pump (LDP)
tank ventilation system
Short circuit to Ground (GND)
1) Repair Manual, Engine Mechanical, Repair Group 20; EVAP canister
system components, servicing; Leak Detection Pump (LDP) -V144-,
checking.
P1473 17881 Leak Detection Pump (LDP)
tank ventilation system
Open circuit
1)
P1475 17883 Leak Detection Pump (LDP)
tank ventilation system
Malfunction / no signal
1)
Repair Manual, Engine Mechanical, Repair Group 20; EVAP canister
system components, servicing; wiring diagram, EVAP canister system. - Check pressurized/vacuum lines to Leak Detection Pump (LDP)
P1476 17884 Leak Detection Pump (LDP)
tank ventilation system
Malfunction/vacuum pressure
too low
1) - Check electrical wire connections to Leak Detection Pump according
to wiring diagram
1) For these malfunctions, ECM does not switch on the Malfunction Indicator Lamp (MIL) unless malfunction is recognized
again after another engine start. Meaning of Malfunction Indicator Lamp (MIL) Page 01
-3 .
Pa
ge 41 of 52 Check DTC Memor
y (function 02
) and Erase DTC Memor
y (function 05
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU05.01.2

01-48

DTC
DTC text
Corrective action
SAE
VAG


P1501 17909 Fuel Pump (FP) relay -J17-
Short circuit to Ground
(GND)
1) - Check Fuel Pump (FP) relay Page 24
-49
P1502 17910 Fuel Pump (FP) relay -J17-
Short circuit to B+
1)
P1512 17920 Intake manifold change-over
valve -N156-
Short circuit to B+1) - Check intake manifold change-over
Page 24
-71

P1515 17923 Intake manifold change-over
valve -N156-
Short circuit to Ground
(GND)
1)
P1516 17924 Intake manifold change-over
valve -N156-
Open circuit
1)
P1519 17927 Bank 1, camshaft
adjustment
Malfunction
1) Repair Manual, Engine Mechanical, Repair Group 15; Camshaft
adjustment, checking; Function of camshaft adjustment, checking
P1522 17930 Bank 2, camshaft
adjustment
Malfunction
1)
P1523 17931 Crash signal from airbag
control module Repair Manual, Body
-On Board Diagnostic (OBD), Repair Group 01; On
Board Diagnostic (OBD) of airbag system

Pa
ge 42 of 52 Check DTC Memor
y (function 02
) and Erase DTC Memor
y (function 05
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU05.01.2

Implausible signal
4)
1) For these malfunctions, ECM does not switch on the Malfunction Indicator Lamp (MIL) unless malfunction is recognized
again after another engine start. Meaning of Malfunction Indicator Lamp (MIL) Page 01
-3 .
4) DTC is stored upon appropriate signal from airbag control module.
Pa
ge 43 of 52 Check DTC Memor
y (function 02
) and Erase DTC Memor
y (function 05
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU05.01.2

01-49

DTC
DTC text
Corrective action
SAE
VAG


P1529 17937 Camshaft adjustment
Short circuit to B+
1) Repair Manual, Engine Mechanical, Repair Group 15; Camshaft
adjustment, checking; Solenoid valve for camshaft adjustment, checking
P1530 17938 Camshaft adjustment
Short circuit to Ground
(GND)
1)
P1531 17939 Camshaft adjustment
Open circuit
1)

P1539 17947 Clutch vacuum vent valve
switch -F36-
Implausible signal
1) - Check clutch pedal switch Page 24
-183
P1541 17908 Fuel Pump (FP) relay -J17-
Open circuit
1) - Check Fuel Pump (FP) relay Page 24
-49
P1542 17950 Throttle Actuation
Potentiometer -G187
Implausible signal
2)3)
- Check angle sensor -1- for throttle drive Page 24
-148
P1543 17951 Throttle Actuation
Potentiometer -G187
Signal too small
2) 3)

Pa
ge 44 of 52 Check DTC Memor
y (function 02
) and Erase DTC Memor
y (function 05
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU05.01.2

P1544 17952 Throttle Actuation
Potentiometer -G187-
Signal too large
2) 3)

1) For these malfunctions, ECM does not switch on the Malfunction Indicator Lamp (MIL) unless malfunction is recognized
again after another engine start. Meaning of Malfunction Indicator Lamp (MIL) Page 01
-3 .
2) For these malfunctions, ECM switches on the EPC warning lamp in instrument cluster. Significance of EPC warning lamp
Page 24
-136
.
3) For these malfunctions, the ECM switches on the Malfunction Indicator Lamp (MIL) in the instrument cluster immediately
after recognizing the malfunction. Meaning of Malfunction Indicator Lamp (MIL) Page 01
-3 .
Pa
ge 45 of 52 Check DTC Memor
y (function 02
) and Erase DTC Memor
y (function 05
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU05.01.2

01-50

DTC
DTC text
Corrective action
SAE
VAG


P1545 17953 Throttle valve control
Malfunction
2) 3)
- Check throttle valve control module Page 24
-141
P1558 17966 Throttle drive (power accelerator actuation) -G186-
Electrical malfunction in circuit
2) 3)

P1559 17967 Throttle valve control module -J338-
Malfunction in basic setting
1) 2)
- Perform adaptation Page 24
-142
P1564 17972 Throttle valve control module -J338-
Voltage too low during basic setting - Charge battery, repeat basic setting
P1565 17973 Throttle valve control module -J338-
Lower impact still not reached
2) 3)
- Check throttle valve control module Page 24
-141
P1568 17976 Throttle valve control module -J338-
Mechanical malfunction
2) 3)

1) For these malfunctions, ECM does not switch on the Malfunction Indicator Lamp (MIL) unless malfunction is recognized
again after another engine start. Meaning of Malfunction Indicator Lamp (MIL) Page 01
-3 .
2) For these malfunctions, ECM switches on the EPC warning lamp in instrument cluster. Significance of EPC warning lamp
Page 24
-136
.
3) For these malfunctions, the Engine Control Module (ECM) switches on the Malfunction Indicator Lamp (MIL) in the
instrument cluster immediately after recognizing the malfunction. Meaning of Malfunction Indicator Lamp (MIL) Page 01
-3 .
Pa
ge 46 of 52 Check DTC Memor
y (function 02
) and Erase DTC Memor
y (function 05
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU05.01.2

01-51

DTC
DTC text
Corrective action
SAE
VAG


P1569 17977 Cruise control switch -E45-

Implausible signal Repair Manual, Electrical Equipment, Repair Group 01; On Board
Diagnostic (OBD) for cruise control system

P1570 17978 Engine Control Module
(ECM)
locked
Repair Manual, Electrical Equipment, Repair Group 01, On Board
Diagnostic (OBD) for immobilizer
- Adapt electronic immobilizer to Engine Control Module (ECM)
P1579 17987 Throttle valve control
module -J338-
Adaptation not started - Perform adaptation of throttle valve control module while maintaining test
requirements Page 24
-142

P1602 18010 Voltage supply, terminal 30

Voltage too low - Check voltage supply for control module Page 28
-30
Pa
ge 47 of 52 Check DTC Memor
y (function 02
) and Erase DTC Memor
y (function 05
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU05.01.2

01-52

DTC
DTC text
Corrective action
SAE
VAG


P1603 18011
Control module faulty
1)
- Replace Engine Control Module (ECM) Page 24
-21
P1604 18012
Control module faulty
2) 3)


P1606 18014 Rough terrain info/engine torque
from ABS control module
Electrical malfunction in circuit
Electrical Wiring Diagrams, Troubleshooting & Component Locations
binder - Check wire connection between Engine Control Module (ECM) and
ABS control module (powertrain databus) Page 24
-192

P1609 18017 Crash shut-off was triggered
(Crash triggered)
5) Repair Manual, Body
-On Board Diagnostic (OBD), Repair Group 01;
On Board Diagnostic (OBD) of airbag system

- Erase DTC memory of the Engine Control Module (ECM) after output
Diagnostic Test Mode (DTM) of the airbag system Page 01
-15

1) For these malfunctions, ECM does not switch on the Malfunction Indicator Lamp (MIL) unless malfunction is recognized
again after another engine start. Meaning of Malfunction Indicator Lamp (MIL) Page 01
-3 .
2) For these malfunctions, ECM switches on the EPC warning lamp in instrument cluster. Significance of EPC warning lamp
Page 24
-136
.
3) For these malfunctions, the Engine Control Module (ECM) switches on the Malfunction Indicator Lamp (MIL) in the
instrument cluster immediately after recognizing the malfunction. Meaning of Malfunction Indicator Lamp (MIL) Page 01
-3 .
5) DTC is stored upon appropriate signal from airbag control module, also during output Diagnostic Test Mode (DTM) of the
airbag system.
Pa
ge 48 of 52 Check DTC Memor
y (function 02
) and Erase DTC Memor
y (function 05
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU05.01.2

01-53

DTC
DTC text
Corrective action
SAE
VAG


P1386 17794 Control module faulty
- Replace Engine Control Module (ECM) Page 24
-21
P1612 18020 Engine Control Module (ECM)
incorrectly coded
1) - Code Engine Control Module (ECM) Page 01
-71
P1624 18032 Request for warning lamp on active
7)
Repair Manual, Automatic Transmission On Board Diagnostic
(OBD), Repair Group 01; On Board Diagnostic (OBD) - Exhaust related malfunction of Transmission Control Module
(TCM)
- Check DTC memory of Transmission Control Module (TCM)
P1626 18034 Powertrain databus
Missing message from Transmission
Control Module (TCM)
1) - Check data transfer of Engine Control Module (ECM) and other
CAN capable control modules Page 24
-192

1) For these malfunctions, ECM does not switch on the Malfunction Indicator Lamp (MIL) unless malfunction is recognized
again after another engine start. Meaning of Malfunction Indicator Lamp (MIL) Page 01
-3 .
7) The Transmission Control Module (TCM) recognized a malfunction that worsens engine emissions. The Transmission
Control Module (TCM) sends the DTC to the Engine Control Module (ECM), which then switches on the Malfunction Indicator
Lamp (MIL). Meaning of Malfunction Indicator Lamp (MIL) Page 01
-3 . The message P1624 is simultaneously stored in the
Engine Control Module (ECM) as evidence that the Malfunction Indicator Lamp (MIL) was not switched on due to an engine
problem but rather a transmission problem.
Pa
ge 49 of 52 Check DTC Memor
y (function 02
) and Erase DTC Memor
y (function 05
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU05.01.2

01-54

DTC
DTC text
Corrective action
SAE
VAG


P1630 18038 Throttle Position (TP) sensor -G79-
Signal too small
2) 3)
- Throttle Position (TP) sensor, checking
Page 24
-154

P1631 18039 Throttle Position (TP) sensor -G79-
Signal too large
2) 3)

P1633 18041 Sender -2- for accelerator pedal position -G185-
Signal too small
2) 3)


P1634 18042 Sender -2- for accelerator pedal position -G185-
Signal too large
2) 3)


P1639 18047 Throttle Position (TP) sensor -G79- and sender -2- for
accelerator pedal position -G185-
Implausible signal
2)3)
- Throttle Position (TP) sensor, checking
Page 24
-154

P1640 18048
Control module faulty
1)
- replacing Engine Control Module (ECM)
Page 24
-21

1) For these malfunctions, ECM does not switch on the Malfunction Indicator Lamp (MIL) unless malfunction is recognized
again after another engine start. Meaning of Malfunction Indicator Lamp (MIL) Page 01
-3 .
2) For these malfunctions, ECM switches on the EPC warning lamp in instrument cluster. Significance of EPC warning lamp
Page 24
-136
.
Pa
ge 50 of 52 Check DTC Memor
y (function 02
) and Erase DTC Memor
y (function 05
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU05.01.2