1998 AUDI A8 AEB Engine OBD and DTC

P1475 17883 EVAP Emission Contr.
LDP Circ.
Malfunction/Signal Circ.
Open
P1476 17884 EVAP Emission Contr.
LDP Circ.
Malfunction/Insufficient
Vacuum
P1477 17885 EVAP Emission Contr.
LDP Circ.
Malfunction
Pa
ge 49 of 57 On Board Dia
gnostic
(OBD
)
11/19/2002 htt
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01-34

Diagnostic Trouble Code
(DTC)
Malfunction text
MIL
Corrective action
SAE
VAG



P1500 17908 Fuel Pump Relay Circ.
Electrical Malfunction Immed.
- Check fuel pump relay and relay actuation Page 24
-81

P1501 17909 Fuel Pump Relay Circ.
Short to Ground
P1502 17910 Fuel Pump Relay Circ.
Short to B+
P1505 17913 Closed Throttle Pos. Switch

Does Not Close/Open Circ. 2 Dcy
- Check throttle body and throttle valve control
module Page 24
-99

P1506 17914 Closed Throttle Pos. Switch

Does Not Open/Short to
Ground
P1543 17951 Throttle Actuation
Potentiometer
Signal too Low Immed.
P1544 17952 Throttle Actuation
Potentiometer
Pa
ge 50 of 57 On Board Dia
gnostic
(OBD
)
11/19/2002 htt
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Signal too High
P1545 17953 Throttle Pos. Contr.
Malfunction 2 Dcy
Pa
ge 51 of 57 On Board Dia
gnostic
(OBD
)
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU02.01.1

01-35

Diagnostic Trouble Code
(DTC)
Malfunction text
MIL
Corrective action
SAE
VAG



P1546 17954 Boost Pressure Contr.
Valve
Short to B+ Off
- Check intake air boost (charge pressure) regulation
Page 24
-123

P1547 17955 Boost Pressure Contr.
Valve
Short to Ground
P1548 17956 Boost Pressure Contr.
Valve
Open
Pa
ge 52 of 57 On Board Dia
gnostic
(OBD
)
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
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e=re
pair&id=AUDI.B5.FU02.01.1

01-36

Diagnostic Trouble
Code (DTC)
Malfunction
text
MIL
Corrective action
SAE
VAG



P1555 17963 Charge Pressure

Upper Limit
Exceeded Off
Repair Manual, 1.8 Liter 4
-Cyl. 5V Turbo Engine Mechanical, Engine
Code(s): AEB, ATW, Repair Group 21

Repair Manual, 1.8 Liter 4
-Cyl. 5V Turbo Engine Mechanical, Engine
Code(s): AWM, Repair Group 21; Charge Pressure, Leak test with VAG 1687
- Check intake air boost (charge pressure)
- Check intake air boost (charge pressure) regulation Page 24
-123
- Check air pressure system using VAG 1687 charge air system tester
P1556 17964 Charge Pressure

Negative
Deviation
P1557 17965 Charge Pressure

Positive
Deviation
P1558 17966 Throttle Actuator

Electrical 2
Dcy - Check throttle body and throttle valve control module Page 24
-99
Pa
ge 53 of 57 On Board Dia
gnostic
(OBD
)
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU02.01.1

Malfunction
Pa
ge 54 of 57 On Board Dia
gnostic
(OBD
)
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU02.01.1

01-37

Diagnostic Trouble
Code (DTC)
Malfunction text
MIL
Corrective action
SAE
VAG



P1559 17967 Idle Speed Contr. Throttle Pos.
Adaptation Malfunction
(Adaptation of throttle valve control module -J338- to Motronic
ECM has been interrupted, e.g. the accelerator pedal was
depressed or the engine was started during throttle valve control
module adjustment) Off
- Check throttle body and
throttle valve control module
Page 24
-99

P1560 17968 Maximum Engine Speed Exceeded Off
- Carry out engine
mechanical repairs as
necessary
P1564 17972 Idle Speed Contr. Throttle Pos.
Low Voltage During Adaptation
(Voltage less than 10 volts during adaptation of throttle valve
control module -J338-) Off
- Check throttle valve control
module power supply
voltage Page 24
-101

P1602 18010 Power Supply (B+) Terminal 30
Low Voltage Off
- Check Engine Control
Module (ECM) power supply
Page 24
-77

P1606 18014 Rough Road Spec Engine Torque ABS-ECU
Electrical Malfunction Off
- Check ABS control module
signal for rough road
recognition Page 24
-161

Pa
ge 55 of 57 On Board Dia
gnostic
(OBD
)
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU02.01.1

01-38

Diagnostic Trouble
Code (DTC)
Malfunction text
MIL
Corrective action
SAE
VAG



P1611 18019 MIL Call-up Circ./Transm.
Contr. Module
Short to Ground 2
Dcy
Electrical Wiring Diagrams, Troubleshooting &
Component Locations - Check wiring between TCM and ECM
P1612 18020 Electronic Control Module
Incorrect Coding Off
- Code Motronic ECM Page 01
-11
P1613 18021 MIL Call-up Circ.
Open/Short to B+ 2
Dcy
Repair Manual, 5 Spd. Automatic Transmission 01V On
Board Diagnostic (OBD), Repair Group 01

Electrical Wiring Diagrams, Troubleshooting &
Component Locations - Check DTC memory for Transmission Control Module
(TCM) and correct malfunctions
- Check wiring between TCM and ECM
Pa
ge 56 of 57 On Board Dia
gnostic
(OBD
)
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU02.01.1