1998 AUDI A4 sensor

01-27

DTC
DTC text
Corrective action
SAE
VAG


P0430 16814 Catalytic converter
system, bank 2,
Not effective enough
1)
Repair Manual, Engine Mechanical, Repair Group 26; Exhaust system
components, removing and installing - Generate readiness code Page 01
-82
. If the same malfunction is indicated
again, replace primary catalytic converter, bank 2.
P0431 16815 Primary catalytic
converter, bank 2,
Not effective enough
1)
Repair Manual, Engine Mechanical, Repair Group 26; Exhaust system
components, removing and installing - Generate readiness code Page 01
-82
. If the same malfunction is indicated
again, replace primary catalytic converter, bank 2.
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 .
Important note:
The primary catalytic converters are located between the oxygen sensors of the appropriate cylinder bank. They are not
immediately visible after vehicle is raised; they are the two, slightly smaller catalytic converters located closer to the engine.
Pa
ge 16 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

01-30

DTC
DTC text
Corrective action
SAE
VAG


P0571 16955 Brake light switch -F-
Implausible signal - Check brake light switch and brake pedal switch Page 24
-178
P0601 16985
Control module faulty
1)
- replacing Engine Control Module (ECM) Page 24
-21
P0604 16988
Control module faulty
1)

P0605 16989
Control module faulty1)

P1102 17510 Bank 1, sensor 1, heating circuit
Short circuit to B+
1) - Check oxygen sensor heating Page 24
-116
P1105 17513 Bank 2, sensor 1, heating circuit
Short circuit to B+
1)
P1107 17515 Bank 2, sensor 1, heating circuit
Short circuit to B+1)

P1110 17518 Bank 2, sensor 2, heating circuit
Short circuit to B+1)

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 19 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

01-31

DTC
DTC text
Corrective action
SAE
VAG


P1111 17519 Oxygen sensor
control, bank 1
System too lean - Check oxygen sensor control before catalytic converter Page 24
-76
P1112 17520 Oxygen sensor
control, bank 1
System too rich
P1113 17521 Bank 1, sensor 1
Internal resistance too
large
1) - Next check signal wires for contact resistance => page Page 24
-90
; if there
are no contact resistances: Replace oxygen sensor
P1114 17522 Bank 2, sensor 1
Internal resistance too
large
1) - Next check signal wires for contact resistance => page Page 24
-112
; if there
are no contact resistances: Replace oxygen sensor
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 20 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

01-32

DTC
DTC text
Corrective action
SAE
VAG


P1115 17523 Bank 1, sensor 1, heating circuit
Short circuit to Ground (GND)
1) - Check oxygen sensor heating Page 24
-116
P1116 17524 Bank 1, sensor 1, heating circuit
Open circuit
1)

P1117 17525 Bank 2, sensor 1, heating circuit
Short circuit to Ground (GND)
1)
P1118 17526 Bank 2, sensor 1, heating circuit
Open circuit
1)

P1119 17527 Bank 2, sensor 1, heating circuit
Short circuit to Ground (GND)
1)

P1120 17528 Bank 2, sensor 1, heating circuit
Open circuit
1)

P1121 17529 Bank 2, sensor 2, heating circuit
Short circuit to Ground (GND)
1)
P1122 17530 Bank 2, sensor 2, heating circuit
Pa
ge 21 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

01-33

DTC
DTC text
Corrective action
SAE
VAG


P1127 17535 Bank 1, mixture
adaptation (mult.)
System too rich
1) - Road test vehicle (fuel in oil).
- Check fuel system pressure Page 24
-30
P1128 17536 Bank 1, mixture
adaptation (mult.)
System too lean
1) - Check Mass Air Flow (MAF) sensor Page 24
-56
- Check intake system for proper seal Page 24
-64
P1129 17537 Bank 2, mixture
adaptation (mult.)
System too rich
1) - Check oxygen sensor before catalytic converter Page 24
-76
P1130 17538 Bank 2, mixture
adaptation (mult.)
System too lean
1) - Check oxygen sensor behind catalytic converter Page 24
-97
- Check fuel injectors Page 24
-36

P1131 17539 Bank 2, sensor 1
Internal resistance too
large
1) - Next check signal wires for contact resistance => page Page 24
-91
; if there
are no contact resistances: Replace oxygen sensor
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 .
Note:
Pa
ge 23 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

01-34

DTC
DTC text
Corrective action
SAE
VAG


P1136 17544 Bank 1, mixture
adaptation (add.)
System too lean
1) - Road test vehicle (fuel in oil).
- Check fuel system pressure Page 24
-30
P1137 17545 Bank 1, mixture
adaptation (add.)
System too rich
1) - Check Mass Air Flow (MAF) sensor Page 24
-56
- Check oxygen sensor before catalytic converter Page 24
-76
P1138 17546 Bank 2, mixture
adaptation (add.)
System too lean
1) - Check oxygen sensor behind catalytic converter Page 24
-97
P1139 17547 Bank 2, mixture
adaptation (add.)
System too rich
1) - Check Evaporative Emission (EVAP) Canister Purge Regulator Valve Page
24
-128

P1140 17548 Bank 2, sensor 2
Internal resistance too
large
1) - Next check signal wires for contact resistance => page Page 24
-114
; if
there are no contact resistances: Replace oxygen sensor
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 .
Note:
add = additive, means that malfunction is only valid at closed throttle (idle).
Pa
ge 25 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

01-35

DTC
DTC text
Corrective action
SAE
VAG


P1141 17549 Load detection
Implausible value - Check to be sure the correct throttle valve control module is installed (part
number)
- Check Mass Air Flow (MAF) sensor Page 24
-56
P1142 17550 Load detection
Limit not reached
P1143 17551 Load detection
Limit exceeded
P1147 17555 Oxygen sensor control, bank
2
System too lean - Check oxygen sensor adaptation values and regulation Page 24
-83
P1148 17556 Oxygen sensor control, bank
2
System too rich
Pa
ge 26 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

01-36

DTC
DTC text
Corrective action
SAE
VAG


P1149 17557 Oxygen sensor control, bank 1
Unplausible control value - Check oxygen sensor adaptation values and
regulation Page 24
-83

- Check fuel system pressure Page 24
-30
P1150 17558 Oxygen sensor control, bank 2
Unplausible control value - Check intake system for proper seal Page 24
-
64

P1171 17579 Angle sensor -2- for throttle drive (power accelerator
actuation) -G188-
Implausible signal
2)3)
- Check angle sensor -1- for throttle drive Page
24
-148

P1172 17580 Angle sensor -2- for throttle drive (power accelerator
actuation) -G188-
Signal too small
2) 3)

P1173 17581 Angle sensor -2- for throttle drive (power accelerator
actuation) -G188-
Signal too large
2) 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, ECM switches on the exhaust warning lamp in instrument cluster immediately after recognizing the
malfunction. Meaning of Malfunction Indicator Lamp (MIL) Page 01
-3 .
Pa
ge 27 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