light AUDI TT 1998 8N / 1.G ATW Engine Diagnostic Trouble Code Table Workshop Manual

01-19
Diagnostic Trouble Code (DTC) table Note:

When malfunctions occur in monitored sensors or components, Diagnostic Trouble Codes (DTCs) are stored in DTC
memory with a description of the malfunction type.
"E-Gas"-relevant malfunctions are also indicated in the instrument cluster by the warning lamp for Electronic Power
Control ("EPC warning lamp"); Notes for E-gas system Page 24
-113
.
Malfunctions that worsen emissions are also indicated by an exhaust warning lamp (MIL) that is also located in the
instrument cluster. There are malfunctions that cause the exhaust warning lamp to light up immediately after recognition.
Malfunctions can also occur that do not cause the exhaust MIL to light up immediately, but only if malfunction is
recognized again after repeated engine starts. Meaning of exhaust MIL Page 01
-3 .
The DTC table is organized by the 5 digit code at left.
If a stored DTC does not recur within the next 40 warm-up cycles, the DTC will be erased automatically.
Malfunctions that occur only sporadically (temporary malfunctions) are are identified by the letters "SP" (sporadic
malfunction) on the VAG1551 scan tool display. The word sporadic means "appearing or occurring at irregular intervals,
occasional".
Do not immediately replace components that the VAG1551/VAS5051 suggests are faulty, instead: Check wire
connections and harness connectors to these components according to wiring diagram. Also check Ground (GND)
connections according to wiring diagram. This is particularly valid when malfunctions are displayed as "sporadically
occurring" (SP).
Pa
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gnostic Trouble Code
(DTC
) table
11/21/2002 htt
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01-27

DTC
DTC text
Corrective action
SAE
VAG


P0501 16885 Vehicle speed signal
Implausible signal - Checking Vehicle Speed Signal (VSS) Page 24
-157
P0506 16890 Idle control RPM below
specified value - Check throttle valve control module Page 24
-120
P0507 16891 Idle control RPM above
specified value - Check hose setup (Secondary Air Injection -AIR- solenoid valve); check
intake system for leaks (false air) Page 24
-68

P0560 16944 Voltage supply
Implausible signal - Check voltage supply for control module Page 28
-36
P0562 16946 Voltage supply
Voltage too low

P0563 16947 Voltage supply
Voltage too high

P0571 16955
Brake light switch -F-
1)

Implausible signal - Check brake light switch and brake pedal switch Page 24
-143
1) Brake pedal switch -F47- is monitored in addition to brake light switch -F-.
Pa
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gnostic Trouble Code
(DTC
) table
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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
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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