fuel pressure AUDI A4 1998 B5 / 1.G APB Engine Motronic Syst

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

01-59

DTC
Description of malfunction
Corrective
SAE
VAG


P1475 17883 EVAP Emission Contr. LDP
Circ
Malfunction/Signal Circ.
Open
2) - Check hoses (pressure/vacuum) to leak detection pump
- Check wiring to pump according to wiring diagram
P1476 17884 EVAP Emission Contr. LDP
Circ
Malfunction/Insufficient
Vacuum 2) Repair Manual, Fuel Supply System, Repair Group 20, Components of
EVAP system servicing, Diagram of EVAP system

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 71 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

01-60

DTC
Description of
malfunction
Corrective action
SAE
VAG


P1477 17885 EVAP Emission Contr.
LDP Circ
Malfunction
2)
Repair Manual, Fuel Supply System, Repair Group 20, Components of EVAP
system servicing, Checking Leak Detection Pump (LDP)
-V144
- Check Leak Detection Pump (LDP)
P1478 17886 EVAP Emission Contr.
LDP Circ
Clamped Tube
Detected
2) Repair Manual, Fuel Supply System, Repair Group 20, Components of EVAP
system servicing, Diagram of EVAP system
- Check hoses (pressure/vacuum) to LDP.
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 72 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

01-113

System in Basic Setting 71
1
2
3
4

When indicated on display
During test is "Test ON" displayed in display field 4. Continue to hold test
conditions until a diagnostic result is displayed in display field 4.
Note: - Check specified value in display field 4:
Test duration for tank leak test takes approximately 60 seconds.Should the diagnosis be repeated several times, open fuel filler cap
each time to release pressure in tank.
Pa
ge 137 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