1996 AUDI A4 catalytic converter

01-20

DTC
DTC text
Corrective action
SAE
VAG


P0130 16514 Bank 1, sensor 1
Electrical malfunction in
circuit
1) - Testing Oxygen Sensor (O2S) and oxygen sensor control before Three Way
Catalytic Converter (TWC) Page 24
-76

P0131 16515 Bank 1, sensor 1
Voltage too low
1)
P0132 16516 Bank 1, sensor 1
Voltage too high 1)
P0133 16517 Bank1, Sensor 1
Signal too slow
1)
P0134 16518 Bank 1, sensor 1
No activity
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 9 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

01-21

DTC
DTC text
Corrective action
SAE
VAG


P0136 16520 Bank1, Sensor 2
Electrical malfunction in
circuit
1) - Testing Oxygen Sensor (O2S) and oxygen sensor control behind Three Way
Catalytic Converter (TWC) Page 24
-97

P0137 16521 Bank1, Sensor 2
Voltage too low
1)
P0138 16522 Bank1, Sensor 2
Voltage too high 1)
P0139 16523 Bank1, Sensor 2
Signal too slow
1)
P0140 16524 Bank1, Sensor 2
No activity
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 10 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

01-22

DTC
DTC text
Corrective action
SAE
VAG


P0150 16534 Bank 2, sensor 1
Electrical malfunction in
circuit
1) - Testing Oxygen Sensor (O2S) and oxygen sensor control before Three Way
Catalytic Converter (TWC) Page 24
-76

P0151 16535 Bank 2, sensor 1
Voltage too low
1)
P0152 16536 Bank 2, sensor 1
Voltage too high 1)
P0153 16537 Bank 2, sensor 1
Signal too slow
1)
P0154 16538 Bank 2, sensor 1
No activity
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 11 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

01-23

DTC
DTC text
Corrective action
SAE
VAG


P0156 16540 Bank 2, sensor 2
Electrical malfunction in
circuit
1) - Testing Oxygen Sensor (O2S) and oxygen sensor control behind Three Way
Catalytic Converter (TWC) Page 24
-97

P0157 16541 Bank 2, sensor 2
Voltage too low
1)
P0158 16542 Bank 2, sensor 2
Voltage too high 1)
P0159 16543 Bank 2, sensor 2
Signal too slow
1)
P0160 16544 Bank 2, sensor 2
No activity
1)
P0219 16603 Maximum engine speed
exceeded - Repair mechanical damage
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 12 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

01-26

DTC
DTC text
Corrective action
SAE
VAG


P0420 16804 Catalytic converter
system, bank 1,
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 1.
P0421 16805 Primary catalytic
converter, bank 1,
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 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 .
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 15 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

01-27

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

01-31

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

01-33

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