sensor AUDI A4 1996 B5 / 1.G AHA Engine On Board Diagnostic User Guide

01-23

Diagnostic Trouble Code
(DTC)
Malfunction text
MIL
Corrective action
SAE
VAG



P0321 16705 Ign./Distributor Eng. Speed Inp. Circ.
Range/Performance 2 Dcy
- Check engine speed (RPM) sensor -
G28- page 24
-88

P0322 16706 Ign./Distributor Eng. Speed Inp. Circ.
No Signal Immed.
Note on misfire malfunctions:
For malfunctions that may be caused by low fuel volume (i.e. combustion misfire) a low-fuel malfunction (DTC "P1250") is also
stored when there is less than 2 gallons of fuel remaining in the tank.
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01-24

Diagnostic Trouble
Code (DTC)
Malfunction text
MIL
Corrective action
SAE
VAG



P0327 16711 Knock Sensor1
Circ.
Low Input Immed.
- Check knock sensors and knock sensor control page 28
-8
P0328 16712 Knock Sensor1
Circ.
High Input
P0332 16716 Knock Sensor2
Circ.
Low Input
P0333 16717 Knock Sensor2
Circ.
High Input
P0411 16795 Sec. Air Inj. Sys.
Incorrect Flow
Detected 2 Dcy
- Check Secondary Air Injection (AIR) system Repair Manual,
2.8 Liter V6 5V Engine Mechanical, Repair Group 26 P0422 16806 Main Catalyst,
Bank1
Efficiency Below
Threshold 2 Dcy
- Check Heated Oxygen Sensor (HO2S) -G39- and O2S control
(bank 1, sensor1) page 24
-22

Pa
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01-25

Diagnostic Trouble
Code (DTC)
Malfunction text
MIL
Corrective action
SAE
VAG



P0432 16816 Main Catalyst, Bank2
Efficiency Below Threshold 2
Dcy - Check HO2S -G108- and O2S control (bank 2, sensor 1)
page 24
-22

P0441 16825 EVAP Emission Contr. Sys.
Incorrect Purge Flow Off
- Check Evaporative Emissions (EVAP) canister purge
regulator valve -N80- output Diagnostic Test Mode
(DTM), page 01
-51

P0442 16826 EVAP Emission Contr. Sys.
(Small Leak)
Leak Detected Off
- Check Evaporative Emission (EVAP) system Repair
Manual, Fuel Supply System, Repair Group 20 P0455 16839 EVAP Emission Contr. Sys.
(Gross Leak)
Leak Detected Off
- Check Evaporative Emission (EVAP) system Repair
Manual, Fuel Supply System, Repair Group 20 P0501 16885 Vehicle Speed Sensor
Range/Performance 2
Dcy - Check vehicle speed signal page 24
-168
Pa
ge 36 of 97 On Board Dia
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01-26

Diagnostic Trouble
Code (DTC)
Malfunction text
MIL
Corrective action
SAE
VAG



P0506 16890 Idle Control System
RPM Lower Than Expected 2
Dcy - Check idle speed page 24
-16
- Check throttle valve control module page 24
-128
- Check fuel pressure, fuel pressure regulator, and
residual fuel pressure page 24
-111

P0507 16891 Idle Control System
RPM Higher Than Expected
P0601 16985 Internal Contr. Module
Memory
Check Sum Error 2
Dcy Replace ECM page 01
-68

P0604 16988 Internal Contr. Module
Random Access
Memory (RAM) Error
P1102 17510 O2 Sensor Heating Circ.,
Bank1-Sensor1
Short to B+ 2
Dcy - Check Oxygen Sensor (O2S) heater -Z19- (bank 1,
sensor 1, before TWC) page 24
-34

P1105 17513 O2 Sensor Heating Circ.,
Bank1-Sensor2
Short to B+ 2
Dcy - Check O2S heater -Z29- (bank 1, sensor 2, behind
TWC) page 24
-52

Pa
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P1107 17515 O2 Sensor Heating Circ.,
Bank2-Sensor1
Short to B+ 2
Dcy - Check O2S heater -Z28- (bank 2, sensor 1, before
TWC) page 24
-34

Pa
ge 38 of 97 On Board Dia
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01-27

Diagnostic Trouble
Code (DTC)
Malfunction text
MIL
Corrective action
SAE
VAG



P1110 17518 O2 Sensor Heating Circ.,
Bank2-Sensor2
Short to B+ 2
Dcy - Check O2S heater -Z30- (bank 2, sensor 2, behind TWC)
page 24
-52

P1127 17535 Long Term Fuel Trim
mult., Bank1
System too Rich 1) 2
Dcy - Check Mass Air Flow (MAF) sensor -G70- page 24
-68
- Check Heated Oxygen Sensor (HO2S) -G39- (bank 1, sensor
1) and O2S control page 24
-22

- Check Oxygen Sensor (O2S) behind Three Way Catalytic
Converter (TWC) -G130- (bank 1, sensor 2) and O2S control
page 24
-42

- Check fuel pressure, fuel pressure regulator and residual fuel
pressure page 24
-111

- Check fuel injectors page 24
-102
and Output Diagnostic
Test Mode (DTM) page 01
-51

1) The term "mult." = multiplicative; applies to entire engine speed (RPM) and load range.
Pa
ge 39 of 97 On Board Dia
gnostic
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)
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01-28

Diagnostic Trouble
Code (DTC)
Malfunction text
MIL
Corrective action
SAE
VAG



P1128 17536 Long Term Fuel Trim
mult., Bank1
System too Lean 1) 2
Dcy - Check Heated Oxygen Sensor (HO2S) -G39- (bank 1, sensor 1)
and O2S control page 24
-22

- Check Oxygen Sensor (O2S) behind Three Way Catalytic
Converter (TWC) -G130- (bank 1, sensor 2) and O2S control
page 24
-42

- Check fuel pressure, fuel pressure regulator and residual fuel
pressure page 24
-111

- Check fuel injectors page 24
-102
and Output Diagnostic
Test Mode (DTM) page 01
-51

- Check EVAP canister purge regulator valve output Diagnostic
Test Mode (DTM), page 01
-51

1) The term "mult." = multiplicative; applies to entire engine speed (RPM) and load range.
Pa
ge 40 of 97 On Board Dia
gnostic
(OBD
)
11/23/2002 htt
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yp
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pair&id=AUDI.B5.FU03.01.1

01-29

Diagnostic Trouble
Code (DTC)
Malfunction text
MIL
Corrective action
SAE
VAG



P1129 17537 Long Term Fuel Trim
mult., Bank2
System too Rich 1) 2
Dcy - Check Mass Air Flow (MAF) sensor -G70- page 24
-68
- Check Heated Oxygen Sensor (HO2S) 2 -G108- (bank 2, sensor
1) and O2S control page 24
-22

- Check Oxygen Sensor (O2S) 2 behind Three Way Catalytic
Converter (TWC) -G131- (bank 2, sensor 2) and O2S control
page 24
-42

- Check fuel pressure, fuel pressure regulator and residual fuel
pressure page 24
-111

- Check fuel injectors page 24
-102
and Output Diagnostic
Test Mode (DTM) page 01
-51

1) The term "mult." = multiplicative; applies to entire engine speed (RPM) and load range.
Pa
ge 41 of 97 On Board Dia
gnostic
(OBD
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
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yp
e=re
pair&id=AUDI.B5.FU03.01.1

01-30

Diagnostic Trouble
Code (DTC)
Malfunction text
MIL
Corrective action
SAE
VAG



P1130 17538 Long Term Fuel Trim
mult., Bank2
System too Lean 1) 2
Dcy - Check Heated Oxygen Sensor (HO2S) 2 -G108- (bank 2, sensor
1) and O2S control page 24
-22

- Check Oxygen Sensor (O2S) 2 behind Three Way Catalytic
Converter (TWC) -G131- (bank 2, sensor 2) and O2S control
page 24
-42

- Check fuel pressure, fuel pressure regulator and residual fuel
pressure page 24
-111

- Check fuel injectors page 24
-102
and Output Diagnostic
Test Mode (DTM) page 01
-51

- Check EVAP canister purge regulator valve output Diagnostic
Test Mode (DTM), page 01
-51

1) The term "mult." = multiplicative; applies to entire engine speed (RPM) and load range.
Pa
ge 42 of 97 On Board Dia
gnostic
(OBD
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU03.01.1

01-31

Diagnostic Trouble
Code (DTC)
Malfunction text
MIL
Corrective action
SAE
VAG



P1136 17544 Long Term Fuel Trim Add.
Fuel, Bank1
System too Lean 2) 2
Dcy - Check intake air system for leaks ("false air") page 24
-
126

- Check Heated Oxygen Sensor (HO2S) -G39- (bank 1,
sensor 1) and O2S control page 24
-22

- Check Mass Air Flow (MAF) sensor -G70- page 24
-68
- Check fuel pressure, fuel pressure regulator and residual
fuel pressure page 24
-111

- Check fuel injectors page 24
-102
and Output
Diagnostic Test Mode (DTM) page 01
-51

2) The term "Add." = additive; applies only with engine running at idle speed.
Pa
ge 43 of 97 On Board Dia
gnostic
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)
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yp
e=re
pair&id=AUDI.B5.FU03.01.1