1995 AUDI A6 ATW Engine Diagnostic Trouble Code Table Workshop Manual

01-43

DTC
DTC text
Corrective action
SAE
VAG


P1545 17953 Throttle valve control
Malfunction - Check throttle valve control module Page 24
-120
P1546 17954 Wastegate bypass
regulator valve -N75-
Short circuit to B+ Repair Manual, 1.8 Liter 4
-Cyl. 5V Turbo Engine Mechanical, Engine Code
(s): AEB, ATW, Repair Group 21, Charge air system with turbocharger, checking

P1547 17955 Wastegate bypass
regulator valve -N75-
Short circuit to Ground
(GND)
P1548 17956 Wastegate bypass
regulator valve -N75-
Open circuit

P1555 17963 Maximum boost
pressure exceeded
P1556 17964 Boost pressure
regulation
Control limit not reached
P1557 17965 Boost pressure
regulation
Control limit exceeded Repair Manual, 1.8 Liter 4
-Cyl. 5V Turbo Engine Mechanical, Engine Code
(s): AEB, ATW, Repair Group 21, Charge pressure, leak test with VAG 1687
- Check air pressure system using VAG 1687 charge air system tester
Pa
ge 33 of 40 Dia
gnostic Trouble Code
(DTC
) table
11/21/2002 htt
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01-44

DTC
DTC text
Corrective action
SAE
VAG


P1558 17966 Throttle drive (power accelerator
actuation) -G186-
Electrical malfunction in circuit - Check throttle valve control module Page 24
-120
P1559 17967 Throttle valve control module -
J338-
Malfunction in basic setting - Perform adaptation Page 24
-121
P1560 17968 Maximum engine speed
exceeded - Repair mechanical damage
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 not reached - Check throttle valve control module Page 24
-120
P1568 17976 Throttle valve control module -
J338-
Mechanical malfunction
P1569 17977 Cruise control switch -E45- Repair Manual, Electrical Equipment On Board Diagnostic (OBD),
Repair Group 01; OBD for cruise control system

Pa
ge 34 of 40 Dia
gnostic Trouble Code
(DTC
) table
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
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yp
e=re
pair&id=AUDI.B5.FU06.01.3

Implausible signal
Pa
ge 35 of 40 Dia
gnostic Trouble Code
(DTC
) table
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU06.01.3

01-45

DTC
DTC text
Corrective action
SAE
VAG


P1579 17987 Throttle valve control module -
J338-
Adaptation not started - Perform adaptation of throttle valve control module while maintaining
test requirements Page 24
-121

P1602 18010 Voltage supply, terminal
30Voltage too low - Check voltage supply for control module Page 28
-36
P1603 18011 Control module faulty
- Replacing Engine Control Module (ECM) Page 24
-23
P1604 18012 Control module faulty
P1606 18014 Rough terrain info/engine torque
from ABS control module
Electrical malfunction in circuit - Check data transfer between Engine Control Module (ECM) and
other CAN capable control modules Page 24
-169

P1609 18017 Crash shut-off was triggered
(Crash triggered)
1) 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
-16

DTC is stored upon appropriate signal from airbag control module and also during output Diagnostic Test Mode (DTM) of the
airbag system.
Pa
ge 36 of 40 Dia
gnostic Trouble Code
(DTC
) table
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU06.01.3

01-46

DTC
DTC text
Corrective action
SAE
VAG


P1612 18020 Engine Control Module (ECM)
incorrectly coded
1) - Code Engine Control Module (ECM) Page 01
-62
P1624 18032 Request for warning lamp on
active
1)
Repair Manual, 5 Spd. Automatic Transmission 01V On Board
Diagnostic (OBD), Repair Group 01
- 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) - Check data transfer between Engine Control Module (ECM) and
other CAN capable control modules Page 24
-169

1) 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) -K83-. Check Malfunction Indicator Lamp (MIL) -K83- Page 01
-3 . The message P1624 is simultaneously
stored in the Engine Control Module (ECM) as evidence that the Malfunction Indicator Lamp (MIL) -K83- was not switched on
due to an engine problem but rather a transmission problem.
Pa
ge 37 of 40 Dia
gnostic Trouble Code
(DTC
) table
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU06.01.3

01-47

DTC
DTC text
Corrective action
SAE
VAG


P1630 18038 Throttle Position (TP) sensor -G79-
Signal too small - Throttle Position (TP) sensor, checking
Page 24
-133

P1631 18039 Throttle Position (TP) sensor -G79-
Signal too large
P1633 18041 Sender -2- for accelerator pedal position -G185-
Signal too small

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

P1639 18047 Throttle Position (TP) sensor -G79- and sender -2- for
accelerator pedal position -G185-
Implausible signal
P1640 18048 Control module faulty
- Replacing Engine Control Module
(ECM) Page 24
-23

Pa
ge 38 of 40 Dia
gnostic Trouble Code
(DTC
) table
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU06.01.3

01-48

DTC
DTC text
Corrective action
SAE
VAG


P1648 18056 Powertrain databus
faulty - Check data transfer between Engine Control Module (ECM) and other
CAN capable control modules Page 24
-169

P1649 18057 Powertrain databus
Missing message from ABS
control module
P1676 18084 Fault light for power accelerator
activation -K132-
Electrical malfunction in circuit - Check fault light for power accelerator activation Page 24
-116
P1677 18085 Fault light for power accelerator
activation -K132-
Short circuit to B+

P1690 18098 Malfunction Indicator Lamp (MIL)
-K83-
Failure in electrical circuit - Check Malfunction Indicator Lamp (MIL) Page 01
-5
P1693 18101 Malfunction Indicator Lamp (MIL)
-K83-
Short circuit to B+
P1853 18261 Powertrain databus
- Check data transfer between Engine Control Module (ECM) and other
CAN capable control modules Page 24
-169

Pa
ge 39 of 40 Dia
gnostic Trouble Code
(DTC
) table
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU06.01.3

Implausible message from ABS
control module
Note:
Fault light for power accelerator activation -K132- (in wiring diagrams, referred to as: fault light for e-gas activation -K132-) is
also called the EPC warning lamp.
Pa
ge 40 of 40 Dia
gnostic Trouble Code
(DTC
) table
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU06.01.3