sensor AUDI A4 1999 B5 / 1.G AHA Engine On Board Diagnostic Owner's Manual

01-32

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



P1137 17545 Long Term Fuel Trim Add.
Fuel, Bank1
System too Rich 2) 2
Dcy - Check Heated Oxygen Sensor (HO2S) -G39- (bank 1,
sensor 1) and O2S control page 24
-22

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

- Check exhaust system for leakage Repair Manual, 2.8
Liter V6 5V Engine Mechanical, Repair Group 26
2) The term "Add." = additive; applies only with engine running at idle speed.
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01-33

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



P1138 17546 Long Term Fuel Trim Add.
Fuel, Bank2
System too Lean 2) 2
Dcy - Check intake air system for leaks ("false air") page 24
-
126

- Check Heated Oxygen Sensor (HO2S) 2 -G108- (bank 2,
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.
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01-34

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



P1139 17547 Long Term Fuel Trim Add.
Fuel, Bank2
System too Rich 2) 2 Dcy
- Check Heated Oxygen Sensor (HO2S) 2 -G108- (bank
2, sensor 1) and O2S control page 24
-22

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

- Check exhaust system for leakage Repair Manual,
2.8 Liter V6 5V Engine Mechanical, Repair Group 26
P1141 17549 Load Calculation Cross
Check
Range/Performance 2 Dcy
- Check Mass Air Flow (MAF) sensor -G70- page 24
-
68

- Check throttle valve control module page 24
-128
P1171 17579 Throttle Actuation
Potentiometer Signal 2
Range/Performance 1) Immed.
- Check throttle actuation potentiometer page 24
-
136
.
1) With this malfunction the exhaust Malfunction Indicator Light (MIL) is switched on by the ECM, immediately after the
malfunction has been recognized. Significance of MIL page 01
-2 .
2) The term "Add." = additive; applies only with engine running at idle speed.
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01-35

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



P1176 17584 O2 Correction Behind
Catalyst, B1
Limit Attained Off
- Check intake air system for leaks ("false air") page 24
-126

- Check Heated Oxygen Sensor (HO2S) aging (bank 1,
sensor 1) page 24
-60

- Check Oxygen Sensor (O2S) heater -Z29- (bank 1,
sensor 2) page 24
-52

- Check O2S behind TWC (bank 1, sensor 2) page 24
-
42

P1177 17585 O2 Correction Behind
Catalyst, B2
Limit Attained Off
- Check intake air system for leaks ("false air") page
24
-126

- Check Heated Oxygen Sensor (HO2S) 2 aging (bank 2,
sensor 1) page 24
-63

- Check Oxygen Sensor (O2S) 2 heater -Z29- (bank 2,
sensor 2) page 24
-52

- Check O2S 2 behind TWC (bank 2, sensor 2) page 24
-42

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01-36

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



P1196 17604 O2 Sensor Heater Circ.,
Bank1-Sensor1
Electrical Malfunction 2 Dcy
- Check Oxygen Sensor (O2S) heater -Z19- (bank 1,
sensor 1) page 24
-34

P1197 17605 O2 Sensor Heater Circ.,
Bank2-Sensor1
Electrical Malfunction 2 Dcy
- Check Oxygen Sensor (O2S) heater -Z28- (bank 2,
sensor 1) page 24
-34

P1198 17606 O2 Sensor Heater Circ.,
Bank1-Sensor2
Electrical Malfunction 2 Dcy
- Check Oxygen Sensor (O2S) heater -Z29- (bank 1,
sensor 2) page 24
-52

P1199 17607 O2 Sensor Heater Circ.,
Bank2-Sensor2
Electrical Malfunction 2 Dcy
- Check Oxygen Sensor (O2S) heater -Z30- (bank 2,
sensor 2) page 24
-52

P1213 17621 Cyl.1-Fuel Inj. Circ.
Short to B+ Immed.
- Check fuel injectors page 24
-102
and Output
Diagnostic Test Mode (DTM) page 01
-51

P1214 17622 Cyl.2-Fuel Inj. Circ.
Short to B+
- Check fuel injectors page 24
-102
and Output
Diagnostic Test Mode (DTM) page 01
-51

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01-40

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



P1250 17658 Fuel Level
Too Low Off
Repair Manual, Electrical Equipment, Repair Group 01 (instrument cluster diagnostics, Read Measuring Value Block)
- Fuel volume less than 2 gallons; add fuel
- Check "fuel level low" signal page 24
-176
- Check fuel level sensor signal and fuel gauge
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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01-41

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



P1325 17733 Cyl.1-Knock Contr.
Limit Attained Off
- Check knock sensors and knock sensor control
page 28
-8
P1326 17734 Cyl.2-Knock Contr.
Limit Attained
P1327 17735 Cyl.3-Knock Contr.
Limit Attained
P1328 17736 Cyl.4-Knock Contr.
Limit Attained
P1329 17737 Cyl.5-Knock Contr.
Limit Attained
P1330 17738 Cyl.6-Knock Contr.
Limit Attained
P1337 17745 Camshaft Pos. Sensor,
Bank1
Short to Ground 2
Dcy - Check Camshaft Position (CMP) sensor 2 -G163-
page 28
-5
P1338 17746 Camshaft Pos. Sensor,
Bank1
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01-42

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



P1391 17799 Camshaft Pos.
Sensor, Bank2
Short to Ground 2 Dcy
- Check Camshaft Position (CMP) sensor -G40- page 28
-2
P1392 17800 Camshaft Pos.
Sensor, Bank2
Open Circ./Short to
B+
P1410 17818 Tank Ventilation Valve
Circ.
Short to B+ 2 Dcy
- Check Evaporative Emissions (EVAP) canister purge
regulator valve output Diagnostic Test Mode (DTM), page
01
-51

P1421 17829 Sec. Air Inj. Valve
Circ.
Short to Ground Immed.
- Check Secondary Air Injection (AIR) system output
Diagnostic Test Mode (DTM), page 01
-51

P1422 17830 Sec. Air Inj. Sys.
Contr. Valve Circ.
Short to B+
P1425 17833 Tank Vent Valve
Short to Ground 2 Dcy
- Check Evaporative Emissions (EVAP) canister purge
regulator valve output Diagnostic Test Mode (DTM), page
01
-51

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01-45

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



P1543 17951 Throttle Actuation Potentiometer
Signal too Low 2
Dcy - Check throttle drive and angle sensor
for throttle drive page 24
-136

P1544 17952 Throttle Actuation Potentiometer
Signal too High
P1545 17953 Throttle Pos. Contr.
Malfunction
P1558 17966 Throttle Actuator
Electrical Malfunction

P1559 17967 Idle Speed Contr. Throttle Pos.
Adaptation Malfunction
(Adaptation of throttle valve control module to engine
control module interrupted by application of
accelerator pedal or by starting engine.) Off
- Check adaptation of throttle valve
control module to Engine Control
Module (ECM) page 24
-150

P1560 17968 Maximum Engine Speed Exceeded Off
- Carry out engine mechanical repairs
as necessary
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on, adaptation of the throttle valve control
module -J338- takes place. Adaptation of
throttle valve control module -J338- (with "Basic
Setting" function 04 and display group 60)
page 24
-150
.

In "Basic Setting" display groups 88 or 99,
oxygen sensor control is switched off. This
makes it possible to check for malfunctions that
may be caused by oxygen sensor control being
switched on or off. In the selected display
group, press buttons -4- and -8- to switch back
and forth between "Read Measuring Value
Block" function 08 and "Basic Setting" function
04.
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