1998 AUDI A8 AHA Engine On Board Diagnostic Workshop Manual

P1426 17834 Tank Vent Valve
Open
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01-43

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



P1432 17840 Sec. Air Inj. Valve
Open 2
Dcy - Check Secondary Air Injection (AIR) system output
Diagnostic Test Mode (DTM), page 01
-51

P1433 17841 Sec. Air Inj. Sys. Pump
Relay Circ.
Open

P1434 17842 Sec. Air Inj. Sys. Pump
Relay Circ.
Short to B+

P1435 17843 Sec. Air Inj. Sys. Pump
Relay Circ.
Short to Ground

P1436 17844 Sec. Air Inj. Sys. Pump
Relay Circ.
Electrical Malfunction

P1471 17879 EVAP Emission Contr. LDP
Circ.
Short to B+ Off
- Check Leak Detection Pump (LDP) page 24
-124
P1472 17880 EVAP Emission Contr. LDP
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Circ.
Short to Ground
P1473 17881 EVAP Emission Contr. LDP
Circ.
Open Circ.
P1476 17884 EVAP Emission Contr. LDP
Circ.
Malfunction/Insufficient
Vacuum Off
- Check Evaporative Emission (EVAP) system Repair
Manual, Fuel Supply System, Repair Group 20
P1477 17885 EVAP Emission Contr. LDP
Circ.
Malfunction
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01-44

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



P1500 17908 Fuel Pump Relay Circ.
Electrical Malfunction Immed.
- Check fuel pump relay and relay actuation page 24
-95

P1501 17909 Fuel Pump Relay Circ.
Short to Ground
P1502 17910 Fuel Pump Relay Circ.
Short to B+
P1505 17913 Closed Throttle Pos. Switch
Does Not Close/Open Circ. 2 Dcy
- Check throttle body and throttle valve control
module page 24
-128

P1512 17920 Intake Manifold Changeover
Valve Circ.
Short to B+ Immed.
- Check Intake Manifold Tuning (IMT) valve (change-
over valve) page 24
-154

P1515 17923 Intake Manifold Changeover
Valve Circ.
Short to Ground

P1516 17924 Intake Manifold Changeover
Valve Circ.
Open
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P1519 17927 Intake Camshaft Contr.,
Bank1
Malfunction 2 Dcy
- Check camshaft adjustment page 28
-29
P1522 17930 Intake Camshaft Contr.,
Bank2
Malfunction

Pa
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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
Pa
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01-46

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



P1564 17972 Idle Speed Contr. Throttle Pos.
Low Voltage During Adaptation
(Supply voltage under 10 V during adaptation of throttle
valve control module to engine control module.) Off
- Check voltage supply to ECM
page 24
-90

P1565 17973 Idle Speed Contr. Throttle Pos.
Lower Impact Not Attained
(Lower specification not attained during adaptation of
throttle valve control module to engine control module,
e.g., accelerator pedal cable incorrectly adjusted,
throttle body dirty, etc.) 2 Dcy
- Clean throttle body
- Check accelerator pedal cable
adjustment Repair Manual,
Fuel Supply System, Repair
Group 20 P1600 18008 Power Supply (B+) Terminal 15
Low Voltage Immed.
- Check voltage supply to Engine
Control Module (ECM) page
24
-90

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01-47

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



P1602 18010 Power Supply (B+) Terminal 30
Low Voltage Off
- Check voltage supply to ECM page 24
-
90

P1606 18014 Rough Road Spec Engine Torque ABS-
ECU
Electrical Malfunction Off
- Check ABS control module signal for
rough road recognition page 24
-174

P1612 18020 Electronic Control Module
Incorrect Coding
(Vehicle with automatic transmission is
coded for manual transmission.) Immed.
- Code ECM page 01
-12
Electronic Control Module
Incorrect Coding
(Vehicle with ASR is not coded for ASR) Off
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