AUDI A6 2000 C5 / 2.G AHA Engine On Board Diagnostic Owner's Guide

P0157 16541 O2 Sensor Circ.,
Bank2-Sensor2
Low Voltage
P0158 16542 O2 Sensor Circ., Bank
2-Sensor2
High Voltage
P0160 16544 O2 Sensor Circ.,
Bank2-Sensor2
No Activity Detected
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01-22

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



P0300 16684 Random/Multiple
Cylinder
Misfire Detected 2 Dcy /
blink - Fuel level too low, check fuel level and add if
necessary
- Check misfire detection page 28
-16
- Check fuel injectors page 24
-102
- Carry out output Diagnostic Test Mode (DTM)
page 01
-51

- Check engine speed (RPM) sensor -G28- page 24
-88

P0301 16685 Cyl. 1
Misfire Detected
P0302 16686 Cyl. 2
Misfire Detected
P0303 16687 Cyl. 3
Misfire Detected
P0304 16688 Cyl. 4
Misfire Detected
P0305 16689 Cyl. 5

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Misfire Detected
P0306 16690 Cyl. 6
Misfire Detected

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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
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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

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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
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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
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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
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)
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