1998 AUDI A4 sensor

01-36

DTC
Description of malfunction
Corrective action
SAE
VAG


P1127 17535 Long Term Fuel Trim mult., Bank1
System too rich
2) - Carry out road test (Fuel in engine oil)
- Check fuel pressure Page 24
-33
P1128 17536 Long Term Fuel Trim mult., Bank1
System too lean
2) - Check Mass Air Flow (MAF) Sensor Page 24
-59
- Check for unmetered (false) air Page 24
-76
P1129 17537 Long Term Fuel Trim mult., Bank2
System too rich
2) - Check oxygen sensor before catalytic converter Page 24
-81
- Check oxygen sensor behind catalytic converter Page 24
-100
P1130 17538 Long Term Fuel Trim mult., Bank2
System too lean
2) - Check fuel injectors Page 24
-43
P1131 17539 Bank2-Sensor1
Internal Resistance too High
2) - Check oxygen sensor heater Page 24
-114
.
- Check oxygen sensor signal wire and activation Page 24
-122
2) With this malfunction the exhaust Malfunction Indicator Light (MIL) is only switched on by the ECM, if the malfunction is
recognized after the engine has been restarted. Significance of MIL Page 01
-3 .
Note:
mult. = multiplikative means that the malfunction affects the entire RPM and load range.
Pa
ge 44 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.01.1

01-37

DTC
Description of malfunction
Corrective action
SAE
VAG


P1136 17544 Long Term Fuel Trim Add. Fuel,
Bank1
System too Lean
2) - Carry out road test (fuel in engine oil)
P1137 17545 Long Term Fuel Trim Add. Fuel,
Bank1
System too Rich
2) - Check fuel pressure Page 24
-33
P1138 17546 Long Term Fuel Trim Add. Fuel,
Bank2
System too Lean
2) - Check Mass Air Flow (MAF) Sensor Page 24
-59
P1139 17547 Long Term Fuel Trim Add. Fuel,
Bank2
System too Rich
2) - Check oxygen sensor before catalytic converter Page 24
-81
- Check oxygen sensor behind catalytic converter Page 24
-
100

- Check EVAP canister valve 1 Page 24
-134
P1140 17548 Bank2-Sensor2
Internal Resistance too High
2) - Check oxygen sensor heater Page 24
-114
.
- Check oxygen sensor signal wire and activation Page 24
-
122

2) With this malfunction the exhaust Malfunction Indicator Light (MIL) is only switched on by the ECM, if the malfunction is
recognized after the engine has been restarted. Significance of MIL Page 01
-3 .
Pa
ge 45 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.01.1

01-38

DTC
Description of
malfunction
Corrective action
SAE
VAG


P1147 17555 O2 Control (Bank2)
System too Lean - Check oxygen sensor adaptation values and oxygen sensor control
Page 24
-86

P1148 17556 O2 Control (Bank2)
System too Rich
P1149 17557 O2 Control (Bank1)
Out of Range - Check oxygen sensor adaptation values and oxygen sensor control
Page 24
-86

P1150 17558 O2 Control (Bank2)
Out of Range - Check fuel pressure Page 24
-33
- Check for unmetered (false) air Page 24
-76
Pa
ge 47 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.01.1

01-39

DTC
Description of malfunction
Corrective action
SAE
VAG


P1171 17579 Throttle Actuation Potentiometer
Signal 2
Range/Performance
1) 3)
- Check throttle actuation potentiometer Page 24
-153
.
P1172 17580 Throttle Actuation Potentiometer
Signal 2
Signal too Low
1) 3)


P1173 17581 Throttle Actuation Potentiometer
Signal 2
Signal too High
1) 3)


P1176 17584 O2 Correction Behind Catalyst, B1
Limit Attained
2) - Check oxygen sensor aging of oxygen sensors before catalytic
converters Page 24
-93

P1177 17585 O2 Correction Behind Catalyst, B2
Limit Attained
2) - Check oxygen sensors and
oxygen sensor control behind catalytic converters Page 24
-100
1) With this malfunction the EPC (Electronic Power Control) Malfunction Indicator Light (MIL) in the instrument cluster is
switched on by the ECM immediately after the malfunction has been recognized. Significance of EPC malfunction indicator
light Page 24
-142
.
2) With this malfunction the exhaust Malfunction Indicator Light (MIL) is only switched on by the ECM, if the malfunction is
recognized after the engine has been restarted. Significance of MIL Page 01
-3 .
Pa
ge 48 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.01.1

01-43

DTC
Description of malfunction
Corrective action
SAE
VAG


P1250 17658 Fuel Level
Too Low
4)
Repair Manual, Electrical Equipment, Repair Group 01
- Fill fuel tank and erase DTC memory
- Check DTC memory from instrument cluster.
4) The malfunction "Fuel Level too Low" will be stored if the fuel level in the tank is or was too low. The malfunction remains as
a static malfunction and will not be set a sporadic malfunction even if the customer fills the tank with fuel in the meantime.
Therefore it is possible to recognize malfunctions which have been stored due to lack of fuel e.g.: misfiring or malfunction
regarding oxygen sensor control.
Pa
ge 53 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.01.1

01-44

DTC
Description of malfunction
Corrective action
SAE
VAG


P1287 17695 Turbocharger bypass valve
Open
Repair Manual, 2.7 Liter V6 5V BiTurbo Engine Mechanical, Engine
Code(s): APB, Repair Group 21, checking Recirculating valve for turbocharger
- Check recirculating valve for turbocharger -N249
P1288 17696 Turbocharger bypass valve
Short to B+

P1289 17697 Turbocharger bypass valve
Short to Ground

P1296 17704 Cooling System
Malfunction
2)
Repair Manual, 2.7 Liter V6 5V BiTurbo Engine Mechanical, Engine
Code(s): APB, Repair Group 19, Cooling, Components for cooling system, engine side
- Check Engine Coolant Temperature (ECT) sensor Page 28
-25
P1297 17705 Charger/throtle-valve
connection, Pressure loss - Check hoses between turbocharger and throttle valve:
Repair Manual, 2.7 Liter V6 5V BiTurbo Engine Mechanical, Engine
Code(s): APB, Repair Group 21; Turbocharger

2) For these malfunctions, ECM does not switch on the Malfunction Indicator Lamp (MIL) unless malfunction is recognized
again after another engine start. Significance of MIL Page 01
-3 .
Pa
ge 54 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.01.1

01-46

DTC
Description of malfunction
Corrective action
SAE
VAG


P1335 17743 Engine Torque Monitoring 2
Control Limit Exceeded
1) 3)
- Check hoses Page 24
-170

- Check Intake Air Temperature (IAT) sensor Page 28
-17
- Check Mass Air Flow (MAF) sensor Page 24
-59
- Check Engine Coolant Temperature (ECT) sensor Page 28
-25
P1336 17744 Engine Torque Monitoring
Adaptation at limit - Check hoses Page 24
-170

- Check Intake Air Temperature (IAT) sensor Page 28
-17
- Check Mass Air Flow (MAF) sensor Page 24
-59
- Check Engine Coolant Temperature (ECT) sensor Page 28
-25
1) With this malfunction the EPC (Electronic Power Control) Malfunction Indicator Light (MIL) in the instrument cluster is
switched on by the ECM. Significance of EPC malfunction indicator light Page 24
-142
.
3) With this malfunction the exhaust Malfunction Indicator Light (MIL) is switched on by the ECM, immidiately after the
malfunction has been recognized. Significance of MIL Page 01
-3 .
Pa
ge 56 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.01.1

01-47

DTC
Description of malfunction
Corrective action
SAE
VAG


P1337 17745 Camshaft Pos. Sensor, Bank1
Short to Ground
2) - Check Camshaft Position (CMP) sensor Page 28
-45
P1338 17746 Camshaft Pos. Sensor, Bank1
Open Circ./Short to B+
2)
P1340 17748 Crankshaft Pos./Engine Speed Sensor
Out of Sequence
2) - Check phase position of Camshaft Position (CMP) sensor
Page 28
-45

P1347 17755 Bank2, Crankshaft-/Camshaft
os.Sens.Sign.
Out of Sequence
2)
2) With this malfunction the exhaust Malfunction Indicator Light (MIL) is only switched on by the ECM, if the malfunction is
recognized after the engine has been restarted. Significance of MIL Page 01
-3 .
Note:
DTC -17748- (Crankshaft Pos./Engine Speed Sensor) indicates -G163.
Pa
ge 57 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.01.1