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HOMESERVICE MANUALSAUDI1998A4 AVANT QUATTRO, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - TESTS W/CODES - TESTS (2.8L)DIAGNOSTIC TROUBLE CODE IDENTIFICATION

1998 Audi A4 Avant Quattro, Automatic

Diagnostic Trouble Code Identification

1998 Audi A4 Avant Quattro, AutomaticSECTION Diagnostic Trouble Code Identification

NOTE: Vehicle manufacturer does not support diagnostic information using aftermarket scan tools. Limited diagnostic information is available.

DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION

Generic Scan Tool Code

VAG 1551 Code

Malfunction/Affected Sensor Or Circuit

P0102 ⁽¹⁾

⁽¹⁾ 16486

MAF Circuit Low Input

P0103 ⁽¹⁾

⁽¹⁾ 16487

MAF Circuit High Input

P0112 ⁽¹⁾

⁽¹⁾ 16496

Intake Air Temperature Circuit Low Input

P0113 ⁽¹⁾

⁽¹⁾ 16497

Intake Air Temperature Circuit High Input

P0116 ⁽¹⁾

⁽¹⁾ 16500

ECT Circuit Range/Performance Problem

P0117 ⁽¹⁾

⁽¹⁾ 16501

ECT Circuit Low Input

P0118 ⁽¹⁾

⁽¹⁾ 16502

ECT Circuit High Input

P0121 ⁽¹⁾

⁽¹⁾ 16505

TP Sensor Circuit Range/Performance Problem

P0122 ⁽¹⁾

⁽¹⁾ 16506

TP Sensor Circuit Low Input

P0123 ⁽¹⁾

⁽¹⁾ 16507

TP Sensor Circuit High Input

P0130 ⁽¹⁾

⁽¹⁾ 16514

HO2S Circuit Malfunction (Bank 1, Sensor 1)

P0131 ⁽¹⁾

⁽¹⁾ 16515

HO2S Circuit Low Voltage (Bank 1, Sensor 1)

P0132 ⁽¹⁾

⁽¹⁾ 16516

HO2S Circuit High Voltage (Bank 1, Sensor 1)

P0133 ⁽¹⁾

⁽¹⁾ 16517

HO2S Circuit Slow Response (Bank 1, Sensor 1)

P0134 ⁽¹⁾

⁽¹⁾ 16518

HO2S Circuit No Activity Detected (Bank 1, Sensor 1)

P0136 ⁽¹⁾

⁽¹⁾ 16520

HO2S Circuit Malfunction (Bank 1, Sensor 2)

P0137 ⁽¹⁾

⁽¹⁾ 16521

HO2S Circuit Low Voltage (Bank 1, Sensor 2)

P0138 ⁽¹⁾

⁽¹⁾ 16522

HO2S Circuit High Voltage (Bank 1, Sensor 2)

P0140 ⁽¹⁾

⁽¹⁾ 16524

HO2S Circuit No Activity Detected (Bank 1, Sensor 2)

P0150 ⁽¹⁾

⁽¹⁾ 16534

HO2S Circuit Malfunction (Bank 2, Sensor 1)

P0151 ⁽¹⁾

⁽¹⁾ 16535

HO2S Circuit Low Voltage (Bank 2, Sensor 1)

P0152 ⁽¹⁾

⁽¹⁾ 16536

HO2S Circuit High Voltage (Bank 2, Sensor 1)

P0153 ⁽¹⁾

⁽¹⁾ 16537

HO2S Circuit Slow Response (Bank 2, Sensor 1)

P0154 ⁽¹⁾

⁽¹⁾ 16538

HO2S Circuit No Activity Detected (Bank 2, Sensor 1)

P0156 ⁽¹⁾

⁽¹⁾ 16540

HO2S Circuit Malfunction (Bank 2, Sensor 2)

P0157 ⁽¹⁾

⁽¹⁾ 16541

HO2S Circuit Low Voltage (Bank 2, Sensor 2)

P0158 ⁽¹⁾

⁽¹⁾ 16542

HO2S Circuit High Voltage (Bank 2, Sensor 2)

P0159 ⁽¹⁾

⁽¹⁾ 16542

HO2S Circuit Slow Response (Bank 2, Sensor 2)

P0160 ⁽¹⁾

⁽¹⁾ 16544

HO2S Circuit No Activity Detected (Bank 2, Sensor 2)

P0300 ⁽²⁾

⁽²⁾ 16684

Random/Multiple Misfire Detected

P0301 ⁽²⁾

⁽²⁾ 16685

Cylinder No. 1 Misfire Detected

P0302 ⁽²⁾

⁽²⁾ 16686

Cylinder No. 2 Misfire Detected

P0303 ⁽²⁾

⁽²⁾ 16687

Cylinder No. 3 Misfire Detected

P0304 ⁽²⁾

⁽²⁾ 16688

Cylinder No. 4 Misfire Detected

P0305 ⁽²⁾

⁽²⁾ 16689

Cylinder No. 5 Misfire Detected

P0306 ⁽²⁾

⁽²⁾ 16690

Cylinder No. 6 Misfire Detected

P0321 ⁽¹⁾

⁽¹⁾ 16705

Ignition Engine Speed Input Circuit Range/Performance

P0322 ⁽³⁾

⁽³⁾ 16706

Ignition Engine Speed Input Circuit No Signal

P0327 ⁽³⁾

⁽³⁾ 16711

Knock Sensor No. 1 Circuit Low Input

P0328 ⁽³⁾

⁽³⁾ 16712

Knock Sensor No. 1 Circuit High Input

P0332 ⁽³⁾

⁽³⁾ 16716

Knock Sensor No. 2 Circuit Low Input

P0333 ⁽³⁾

⁽³⁾ 16717

Knock Sensor No. 2 Circuit High Input

P0411 ⁽¹⁾

⁽¹⁾ 16795

Secondary Air Injection System Incorrect Flow Detected

P0422 ⁽¹⁾

⁽¹⁾ 16806

Main Catalyst Efficiency Below Threshold (Bank 1)

P0432 ⁽¹⁾

⁽¹⁾ 16816

Main Catalyst Efficiency Below Threshold (Bank 2)

P0441 ⁽⁴⁾

⁽⁴⁾ 16825

EVAP Emission Control System Incorrect Purge Flow

P0442 ⁽⁴⁾

⁽⁴⁾ 16826

EVAP Emission Control System Small Leak Detected

P0455 ⁽⁴⁾

⁽⁴⁾ 16839

EVAP Emission Control System Gross Leak Detected

P0501 ⁽¹⁾

⁽¹⁾ 16885

Vehicle Speed Sensor Range/Performance

P0506 ⁽¹⁾

⁽¹⁾ 16890

Idle Control System RPM Lower Than Expected

P0507 ⁽¹⁾

⁽¹⁾ 16891

Idle Control System RPM Higher Than Expected

P0601 ⁽¹⁾

⁽¹⁾ 16985

Internal Controller Module Memory Check Sum Error

P0604 ⁽¹⁾

⁽¹⁾ 16988

Internal Controller Module Memory RAM Error

P1102 ⁽¹⁾

⁽¹⁾ 17510

HO2S Heater Circuit Short to B+ (Bank 1, Sensor 1)

P1105 ⁽¹⁾

⁽¹⁾ 17513

HO2S Heater Circuit Short to B+ (Bank 1, Sensor 2)

P1107 ⁽¹⁾

⁽¹⁾ 17515

HO2S Heater Circuit Short To B+ (Bank 2, Sensor 1)

P1110 ⁽¹⁾

⁽¹⁾ 17518

HO2S Heater Circuit Short To B+ (Bank 2, Sensor 2)

P1127 ⁽¹⁾

⁽¹⁾ 17535

Long Term Fuel Trim Multiplicative Too Rich (Bank 1)

P1128 ⁽¹⁾

⁽¹⁾ 17536

Long Term Fuel Trim Multiplicative Too Lean (Bank 1)

P1129 ⁽¹⁾

⁽¹⁾ 17537

Long Term Fuel Trim Multiplicative Too Rich (Bank 2)

P1130 ⁽¹⁾

⁽¹⁾ 17538

Long Term Fuel Trim Multiplicative Too Lean (Bank 2)

P1136 ⁽¹⁾

⁽¹⁾ 17544

Long Term Fuel Trim Additive Too Lean (Bank 1)

P1137 ⁽¹⁾

⁽¹⁾ 17545

Long Term Fuel Trim Additive Too Rich (Bank 1)

P1138 ⁽¹⁾

⁽¹⁾ 17546

Long Term Fuel Trim Additive Too Lean (Bank 2)

P1139 ⁽¹⁾

⁽¹⁾ 17547

Long Term Fuel Trim Additive Too Rich (Bank 2)

P1141 ⁽¹⁾

⁽¹⁾ 17549

Load Calculation Cross Check Range/Performance

P1176 ⁽⁴⁾

⁽⁴⁾ 17584

O2 Correction Behind Catalyst B1 Limit Attained

P1177 ⁽⁴⁾

⁽⁴⁾ 17585

O2 Correction Behind Catalyst B2 Limit Attained

P1196 ⁽¹⁾

⁽¹⁾ 17604

O2 Sensor Heater Circuit Electrical Malfunction (Bank 1, Sensor 1)

P1197 ⁽¹⁾

⁽¹⁾ 17605

O2 Sensor Heater Circuit Electrical Malfunction (Bank 2, Sensor 1)

P1198 ⁽¹⁾

⁽¹⁾ 17606

O2 Sensor Heater Circuit Electrical Malfunction (Bank 1, Sensor 2)

P1199 ⁽¹⁾

⁽¹⁾ 17607

O2 Sensor Heater Circuit Electrical Malfunction (Bank 2, Sensor 2)

P1213 ⁽³⁾

⁽³⁾ 17621

Cylinder No. 1 Fuel Injector Circuit Short To B+

P1214 ⁽³⁾

⁽³⁾ 17622

Cylinder No. 2 Fuel Injector Circuit Short To B+

P1215 ⁽³⁾

⁽³⁾ 17623

Cylinder No. 3 Fuel Injector Circuit Short To B+

P1216 ⁽³⁾

⁽³⁾ 17624

Cylinder No. 4 Fuel Injector Circuit Short To B+

P1217 ⁽³⁾

⁽³⁾ 17625

Cylinder No. 5 Fuel Injector Circuit Short To B+

P1218 ⁽³⁾

⁽³⁾ 17626

Cylinder No. 6 Fuel Injector Circuit Short To B+

P1225 ⁽³⁾

⁽³⁾ 17633

Cylinder No. 1 Fuel Injector Circuit Short To Ground

P1226 ⁽³⁾

⁽³⁾ 17634

Cylinder No. 2 Fuel Injector Circuit Short To Ground

P1227 ⁽³⁾

⁽³⁾ 17635

Cylinder No. 3 Fuel Injector Circuit Short To Ground

P1228 ⁽³⁾

⁽³⁾ 17636

Cylinder No. 4 Fuel Injector Circuit Short To Ground

P1229 ⁽³⁾

⁽³⁾ 17637

Cylinder No. 5 Fuel Injector Circuit Short To Ground

P1230 ⁽³⁾

⁽³⁾ 17638

Cylinder No. 6 Fuel Injector Circuit Short To Ground

P1237 ⁽³⁾

⁽³⁾ 17645

Cylinder No. 1 Fuel Injector Open Circuit

P1238 ⁽³⁾

⁽³⁾ 17646

Cylinder No. 2 Fuel Injector Open Circuit

P1239 ⁽³⁾

⁽³⁾ 17647

Cylinder No. 3 Fuel Injector Open Circuit

P1240 ⁽³⁾

⁽³⁾ 17648

Cylinder No. 4 Fuel Injector Open Circuit

P1241 ⁽³⁾

⁽³⁾ 17649

Cylinder No. 5 Fuel Injector Open Circuit

P1242 ⁽³⁾

⁽³⁾ 17650

Cylinder No. 6 Fuel Injector Open Circuit

P1250 ⁽⁴⁾

⁽⁴⁾ 17658

Fuel Level Too Low

P1325 ⁽⁴⁾

⁽⁴⁾ 17733

Cylinder No. 1 Knock Control Limit Attained

P1326 ⁽⁴⁾

⁽⁴⁾ 17734

Cylinder No. 2 Knock Control Limit Attained

P1327 ⁽⁴⁾

⁽⁴⁾ 17735

Cylinder No. 3 Knock Control Limit Attained

P1328 ⁽⁴⁾

⁽⁴⁾ 17736

Cylinder No. 4 Knock Control Limit Attained

P1329 ⁽⁴⁾

⁽⁴⁾ 17737

Cylinder No. 5 Knock Control Limit Attained

P1330 ⁽⁴⁾

⁽⁴⁾ 17738

Cylinder No. 6 Knock Control Limit Attained

P1337 ⁽¹⁾

⁽¹⁾ 17745

Camshaft Position Sensor Short To Ground (Bank 1)

P1338 ⁽¹⁾

⁽¹⁾ 17746

Camshaft Position Sensor Open Circuit Or Short To B+ (Bank 1)

P1386 ⁽¹⁾

⁽¹⁾ 17794

Internal Control Module Knock Control Circuit Error

P1391 ⁽¹⁾

⁽¹⁾ 17799

Camshaft Position (CMP) Sensor Short To Ground (Bank 2)

P1392 ⁽¹⁾

⁽¹⁾ 17800

Camshaft Position (CMP) Sensor Open Circuit Or Short To B+ (Bank 2)

P1410 ⁽¹⁾

⁽¹⁾ 17818

Fuel Tank Ventilation Valve Circuit Short To B+

P1421 ⁽³⁾

⁽³⁾ 17829

Secondary Air Injection Valve Circuit Short To Ground

P1422 ⁽³⁾

⁽³⁾ 17830

Secondary Air Injection System Control Valve Circuit Short To B+

P1425 ⁽¹⁾

⁽¹⁾ 17833

Tank Vent Valve Short To Ground

P1426 ⁽¹⁾

⁽¹⁾ 17834

Tank Vent Valve Open

P1432 ⁽¹⁾

⁽¹⁾ 17840

Secondary Air Injection Valve Open

P1433 ⁽¹⁾

⁽¹⁾ 17841

Secondary Air Injection System Pump Relay Circuit Open

P1434 ⁽¹⁾

⁽¹⁾ 17842

Secondary Air Injection System Pump Relay Circuit Short To B+

P1435 ⁽¹⁾

⁽¹⁾ 17843

Secondary Air Injection System Pump Relay Circuit Short To Ground

P1436 ⁽¹⁾

⁽¹⁾ 17844

Secondary Air Injection System Pump Relay Circuit Electrical Malfunction

P1471 ⁽⁴⁾

⁽⁴⁾ 17879

EVAP Emission Control LDP Circuit Short To B+

P1472 ⁽⁴⁾

⁽⁴⁾ 17880

EVAP Emission Control LDP Circuit Short To Ground

P1473 ⁽⁴⁾

⁽⁴⁾ 17881

EVAP Emission Control LDP Open Circuit

P1476 ⁽⁴⁾

⁽⁴⁾ 17884

EVAP Emission Control LDP Circuit Malfunction/Insufficient Vacuum

P1477 ⁽⁴⁾

⁽⁴⁾ 17885

EVAP Emission Control LDP Circuit Malfunction

P1500 ⁽³⁾

⁽³⁾ 17908

Fuel Pump Relay Circuit Electrical
Malfunction

P1501 ⁽³⁾

⁽³⁾ 17909

Fuel Pump Relay Circuit Short To Ground

P1502 ⁽³⁾

⁽³⁾ 17910

Fuel Pump Relay Circuit Short To B+

P1505 ⁽¹⁾

⁽¹⁾ 17913

CTP Switch Does Not Close (Open Circuit)

P1512 ⁽³⁾

⁽³⁾ 17920

Intake Manifold Change-Over Valve Circuit Short To B+

P1515 ⁽³⁾

⁽³⁾ 17923

Intake Manifold Change-Over Valve Circuit Short To Ground

P1516 ⁽³⁾

⁽³⁾ 17924

Intake Manifold Change-Over Valve Circuit Open

P1519 ⁽¹⁾

⁽¹⁾ 17927

Intake Camshaft Control Malfunction (Bank 1)

P1522 ⁽¹⁾

⁽¹⁾ 17930

Intake Camshaft Control Malfunction (Bank 2)

P1543 ⁽¹⁾

⁽¹⁾ 17951

Throttle Actuation Potentiometer Signal Too Low

P1544 ⁽¹⁾

⁽¹⁾ 17952

Throttle Actuation Potentiometer Signal Too High

P1545 ⁽¹⁾

⁽¹⁾ 17953

Throttle Position Control Malfunction

P1558 ⁽¹⁾

⁽¹⁾ 17966

Throttle Actuator Electrical Malfunction

P1559 ⁽⁴⁾

⁽⁴⁾ 17967

Idle Speed Control Throttle Position Adaptation Malfunction

P1560 ⁽⁴⁾

⁽⁴⁾ 17968

Maximum Engine Speed Exceeded

P1564 ⁽⁴⁾

⁽⁴⁾ 17972

Idle Speed Control Throttle Position Low Voltage During Adaptation

P1565 ⁽¹⁾

⁽¹⁾ 17973

Idle Speed Control Throttle Position Lower Impact Not Attained

P1600 ⁽³⁾

⁽³⁾ 18008

Power Supply (B+) Terminal 15 Low Voltage

P1602 ⁽⁴⁾

⁽⁴⁾ 18010

Power Supply (B+) Terminal 30 Low Voltage

P1606 ⁽⁴⁾

⁽⁴⁾ 18014

Rough Road/Acceleration Specification Engine Torque ABS-PCM Electrical Malfunction

P1612 ⁽³⁾

⁽³⁾ 18020

PCM Incorrectly Coded (Vehicle With A/T Is Coded For M/T)

P1612 ⁽⁴⁾

⁽⁴⁾ 18020

PCM Incorrectly Coded (Vehicle With ASR Is Not Coded For ASR)

P1624 ⁽³⁾

⁽³⁾ 18032

MIL Request Signal Active

P1626 ⁽¹⁾

⁽¹⁾ 18034

CAN Bus Missing Message From Transmission Controller

P1640 ⁽¹⁾

⁽¹⁾ 18048

Internal Controller Module (EEPROM) Error

P1681 ⁽³⁾

⁽³⁾ 18089

Controller Unit Programming Not Finished

P1690 ⁽⁴⁾

⁽⁴⁾ 18098

MIL Malfunction

⁽¹⁾	MIL is switched on after 2 trips.

⁽²⁾	MIL is switched on after 2 trips or will blink.

⁽³⁾	MIL is switched on immediately.

⁽⁴⁾	MIL is not switched on.

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.