power AUDI A3 1998 8L / 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).
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gnostic Trouble Code
(DTC
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01-23

DTC
DTC text
Corrective action
SAE
VAG


P0300 16684 Combustion misfire detected
- Check fuel pressure Page 24
-33
- Check fuel injectors Page 24
-38
P0301 16685 Cyl. 1 combustion misfire detected
- Check spark plugs and ignition wires with connector
P0302 16686 Cyl. 2 combustion misfire detected
- Ignition coils with power output stages Checking Page 28
-4
P0303 16687 Cyl. 3 combustion misfire detected
- Check misfire recognition Page 28
-51
P0304 16688 Cyl. 4 combustion misfire detected
- Fill fuel tank with fuel
P0321 16705 Engine Speed (RPM) sensor -G28-
Implausible signal - Check sender for fuel gauge Page 28
-26
P0322 16706 Engine Speed (RPM) sensor -G28-
No signal
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01-28

DTC
DTC text
Corrective action
SAE
VAG


P0601 16985 Control module faulty
- Replacing Engine Control Module (ECM) Page 24
-23
P0604 16988 Control module faulty
P0605 16989 Control module faulty
P0685 17069 Main relay -J271-
Open circuit - Check motronic Engine Control Module (ECM) power supply relay -J271-
Page 28
-13

P1102 17510 Bank 1, sensor 1, heating
circuit
Short circuit to B+ - Check oxygen sensor heating Page 24
-99
P1105 17513 Bank 1, sensor 2, heating
circuit
Short circuit to B+
P1111 17519 Oxygen sensor control,
bank 1
System too lean - Check oxygen sensor control behind catalytic converter Page 24
-71
P1112 17520 Oxygen sensor control,
bank 1
System too rich
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(DTC
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01-32

DTC
DTC text
Corrective action
SAE
VAG


P1149 17557 Oxygen sensor control, bank 1
Unplausible control value - Check oxygen sensor adaptation values and control
Page 24
-74

- Check fuel system pressure Page 24
-33
- Check intake system for leaks (false air) Page 24
-
68

P1171 17579 Angle sensor -2- for throttle drive (power
accelerator actuation) -G188-
Implausible signal - Check angle sensor -1- for throttle drive Page 24
-
127

P1172 17580 Angle sensor -2- for throttle drive (power
accelerator actuation) -G188-
Signal too small
P1173 17581 Angle sensor -2- for throttle drive (power
accelerator actuation) -G188-
Signal too large

P1176 17584 Bank 1 oxygen sensor correction behind catalytic
converter Control limit reached - Check oxygen sensor aging of oxygen sensor before
catalytic converter Page 24
-83

- Check oxygen sensor and oxygen sensor control
behind catalytic converter Page 24
-87

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(DTC
) table
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01-42

DTC
DTC text
Corrective action
SAE
VAG


P1500 17908 Fuel Pump (FP) relay -J17-
Electrical malfunction in circuit - Check Fuel Pump (FP) relay Page 24
-53
P1502 17910 Fuel Pump (FP) relay -J17-
Short circuit to B+
P1517 17925 Main relay -J271-
Failure in electrical circuit - Check motronic Engine Control Module (ECM) power
supply relay -J271- Page 28
-13

P1523 17931 Crash signal from airbag control module
Implausible signal
1) Repair Manual, Body On Board Diagnostic (OBD),
Repair Group 01; On Board Diagnostic (OBD) of airbag system

P1539 17947 Clutch vacuum vent valve switch -F36-
Implausible signal - Check clutch pedal switch Page 24
-149
P1542 17950 Angle sensor -1- for throttle drive (power
accelerator actuation) -G187-
Implausible signal - Check angle sensor -1- for throttle drive Page 24
-127
P1543 17951 Angle sensor -1- for throttle drive (power
accelerator actuation) -G187-Signal too
small
P1544 17952 Angle sensor -1- for throttle drive (power
accelerator actuation) -G187-
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gnostic Trouble Code
(DTC
) table
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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

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(DTC
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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.
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gnostic Trouble Code
(DTC
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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

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gnostic Trouble Code
(DTC
) table
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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