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HOMESERVICE MANUALSAUDI1996A4 BASE, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - TESTS W/CODES - 2.8LDIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION

1996 Audi A4 Base, Standard

Diagnostic Trouble Code (DTC) Identification

1996 Audi A4 Base, StandardSECTION Diagnostic Trouble Code (DTC) Identification

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

P0116 ⁽¹⁾

⁽¹⁾ 16500

ECT Ckt Range/Performance Problem

P0117 ⁽¹⁾

⁽¹⁾ 16501

ECT Circuit Low Input

P0118 ⁽¹⁾

⁽¹⁾ 16502

ECT Circuit High Input

P0120 ⁽¹⁾

⁽¹⁾ 16504

TP Sensor Circuit Malfunction

P0121 ⁽¹⁾

⁽¹⁾ 16505

TP Sensor Ckt 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 Ckt Malfunction (Bank 1, Sensor 1)

P0132 ⁽¹⁾

⁽¹⁾ 16516

HO2S Ckt High Voltage (Bank 1, Sensor 1)

P0133 ⁽²⁾

⁽²⁾ 16517

HO2S Ckt Slow Respond (Bank 1, Sensor 1)

P0134 ⁽¹⁾

⁽¹⁾ 16518

HO2S Ckt No Activity (Bank 1, Sensor 1)

P0135 ⁽¹⁾

⁽¹⁾ 16519

HO2S Heater Ckt Error (Bank 1, Sensor 1)

P0136 ⁽¹⁾

⁽¹⁾ 16520

HO2S Ckt Malfunction (Bank 1, Sensor 2)

P0138 ⁽¹⁾

⁽¹⁾ 16522

HO2S Ckt High Voltage (Bank 1, Sensor 2)

P0141 ⁽¹⁾

⁽¹⁾ 16525

HO2S Heater Ckt Error (Bank 1, Sensor 2)

P0150 ⁽¹⁾

⁽¹⁾ 16534

HO2S Ckt Malfunction (Bank 2, Sensor 1)

P0152 ⁽¹⁾

⁽¹⁾ 16536

HO2S Ckt High Voltage (Bank 2, Sensor 1)

P0153 ⁽²⁾

⁽²⁾ 16537

HO2S Ckt Slow Respond (Bank 2, Sensor 1)

P0154 ⁽¹⁾

⁽¹⁾ 16538

HO2S Ck No Activity (Bank 2, Sensor 1)

P0155 ⁽¹⁾

⁽¹⁾ 16539

HO2S Heater Ckt Error (Bank 2, Sensor 1)

P0156 ⁽¹⁾

⁽¹⁾ 16540

HO2S Ckt Malfunction (Bank 2, Sensor 2)

P0158 ⁽¹⁾

⁽¹⁾ 16542

HO2S Ckt High Voltage (Bank 2, Sensor 2)

P0161 ⁽¹⁾

⁽¹⁾ 16545

HO2S Heater Ckt Error (Bank 2, Sensor 2)

P0170 ⁽²⁾

⁽²⁾ 16554

Fuel Trim Malfunction (Bank 1)

P0171 ⁽²⁾

⁽²⁾ 16555

System Too Lean (Bank 1)

P0172 ⁽²⁾

⁽²⁾ 16556

System Too Rich (Bank 1)

P0173 ⁽²⁾

⁽²⁾ 16557

Fuel Trim Malfunction (Bank 2)

P0174 ⁽²⁾

⁽²⁾ 16558

System Too Lean (Bank 2)

P0175 ⁽²⁾

⁽²⁾ 16559

System Too Rich (Bank 2)

P0300 ⁽³⁾

⁽³⁾ 16684

Random Misfire Detected

P0301 ⁽³⁾

⁽³⁾ 16685

Cylinder No. 1 Misfire Detected

P0302 ⁽³⁾

⁽³⁾ 16686

Cylinder No. 2 Misfire Detected

P0303 ⁽³⁾

⁽³⁾ 16687

Cylinder No. 3 Misfire Detected

P0304 ⁽³⁾

⁽³⁾ 16688

Cylinder No. 4 Misfire Detected

P0305 ⁽³⁾

⁽³⁾ 16689

Cylinder No. 5 Misfire Detected

P0306 ⁽³⁾

⁽³⁾ 16690

Cylinder No. 6 Misfire Detected

P0322 ⁽¹⁾

⁽¹⁾ 16706

Engine Speed Input Ckt No Signal

P0327 ⁽¹⁾

⁽¹⁾ 16711

KS No. 1 Ckt Low Input (Bank 1)

P0332 ⁽¹⁾

⁽¹⁾ 16176

KS No. 2 Ckt Low Input (Bank 2)

P0337 ⁽¹⁾

⁽¹⁾ 16721

Crankshaft Position Sensor Ckt Low Input

P0401 ⁽²⁾

⁽²⁾ 16785

EGR Flow Insufficient Detected

P0402 ⁽²⁾

⁽²⁾ 16786

EGR Flow Excessive Detected

P0422 ⁽²⁾

⁽²⁾ 16806

Main Catalyst Below Threshold (Bank 1)

P0432 ⁽²⁾

⁽²⁾ 16816

Main Catalyst Below Threshold (Bank 2)

P0440 ⁽²⁾

⁽²⁾ 16824

EVAP System Malfunction

P0452 ⁽¹⁾

⁽¹⁾ 16836

EVAP System Pressure Sensor Low Input

P0453 ⁽¹⁾

⁽¹⁾ 16837

EVAP System Pressure Sensor High Input

P0461 ⁽¹⁾

⁽¹⁾ 16845

Fuel Level Sensor Ckt Range/Performance

P0501 ⁽¹⁾

⁽¹⁾ 16885

Vehicle Speed Sensor Range/Performance

P0605 ⁽¹⁾

⁽¹⁾ 16989

PCM Read Only Memory (ROM) Error

P0702 ⁽⁵⁾

⁽⁵⁾ 00545

Transmission Control System Electrical

P0706 ⁽⁴⁾

⁽⁴⁾ 17090

Trans Range Sensor Ckt Range/Performance

P0707 ⁽⁴⁾

⁽⁴⁾ 17091

Trans Range Sensor Ckt Low Input

P0717 ⁽⁵⁾

⁽⁵⁾ 17101

Input/Turbine Speed Sensor Ckt No Signal

P0722 ⁽⁵⁾

⁽⁵⁾ 00297

Output Speed Sensor Ckt No Signal

P0726 ⁽⁵⁾

⁽⁵⁾ 00543

Engine Speed Input Ckt Range/Performance

P0732 ⁽⁵⁾

⁽⁵⁾ 00652

Gear 2 Incorrect Ratio

P0733 ⁽⁵⁾

⁽⁵⁾ 00652

Gear 3 Incorrect Ratio

P0734 ⁽⁵⁾

⁽⁵⁾ 00652

Gear 4 Incorrect Ratio

P0735 ⁽⁵⁾

⁽⁵⁾ 00652

Gear 5 Incorrect Ratio

P0753 ⁽⁵⁾

⁽⁵⁾ 00258

Shift Solenoid A Electrical

P0758 ⁽⁵⁾

⁽⁵⁾ 0260

Shift Solenoid B Electrical

P0763 ⁽⁵⁾

⁽⁵⁾ 00262

Shift Solenoid C Electrical

P1101 ⁽¹⁾

⁽¹⁾17509

HO2S Volts Low/Air Leak (Bank 1, Sensor 1)

P1102 ⁽¹⁾

⁽¹⁾17510

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

P1104 ⁽¹⁾

⁽¹⁾17512

HO2S Volts Low/Air Leak (Bank 1, Sensor 2)

P1105 ⁽¹⁾

⁽¹⁾17513

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

P1106 ⁽¹⁾

⁽¹⁾17514

HO2S Volts Low/Air Leak (Bank 2, Sensor 1)

P1107 ⁽¹⁾

⁽¹⁾17515

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

P1109 ⁽¹⁾

⁽¹⁾17517

HO2S Volts Low/Air Leak (Bank 2, Sensor 2)

P1110 ⁽¹⁾

⁽¹⁾17518

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

P1201 ⁽¹⁾

⁽¹⁾ 17609

Cyl. 1 Fuel Injector Ckt Malfunction

P1202 ⁽¹⁾

⁽¹⁾ 17610

Cyl. 2 Fuel Injector Ckt Malfunction

P1203 ⁽¹⁾

⁽¹⁾ 17611

Cyl. 3 Fuel Injector Ckt Malfunction

P1204 ⁽¹⁾

⁽¹⁾ 17612

Cyl. 4 Fuel Injector Ckt Malfunction

P1205 ⁽¹⁾

⁽¹⁾ 17613

Cyl. 5 Fuel Injector Ckt Malfunction

P1206 ⁽¹⁾

⁽¹⁾ 17614

Cyl. 6 Fuel Injector Ckt Malfunction

P1213 ⁽¹⁾

⁽¹⁾ 17621

Cyl. 1 Fuel Injector Ckt Short To B+

P1214 ⁽¹⁾

⁽¹⁾ 17622

Cyl. 2 Fuel Injector Ckt Short To B+

P1215 ⁽¹⁾

⁽¹⁾ 17623

Cyl. 3 Fuel Injector Ckt Short To B+

P1216 ⁽¹⁾

⁽¹⁾ 17624

Cyl. 4 Fuel Injector Ckt Short To B+

P1217 ⁽¹⁾

⁽¹⁾ 17625

Cyl. 5 Fuel Injector Ckt Short To B+

P1218 ⁽¹⁾

⁽¹⁾ 17626

Cyl. 6 Fuel Injector Ckt Short To B+

P1250 ⁽⁴⁾

⁽⁴⁾ 17658

Fuel Level Too Low

P1325 ⁽⁴⁾

⁽⁴⁾ 17733

Cyl. 1 Knock Control Limit Attained

P1326 ⁽⁴⁾

⁽⁴⁾ 17734

Cyl. 2 Knock Control Limit Attained

P1327 ⁽⁴⁾

⁽⁴⁾ 17735

Cyl. 3 Knock Control Limit Attained

P1328 ⁽⁴⁾

⁽⁴⁾ 17736

Cyl. 4 Knock Control Limit Attained

P1329 ⁽⁴⁾

⁽⁴⁾ 17737

Cyl. 5 Knock Control Limit Attained

P1330 ⁽⁴⁾

⁽⁴⁾ 17738

Cyl. 6 Knock Control Limit Attained

P1339 ⁽¹⁾

⁽¹⁾ 17747

Crank Position Sensor/ESS Crossed Ckts

P1340 ⁽¹⁾

⁽¹⁾ 17748

CMP/CP Sensors: Signals Out Of Sequence

P1341 ⁽¹⁾

⁽¹⁾ 17749

Ign. Coil Power Out Stage 1 Short To Gnd

P1343 ⁽¹⁾

⁽¹⁾ 17751

Ign. Coil Power Out Stage 2 Short To Gnd

P1345 ⁽¹⁾

⁽¹⁾ 17753

Ign. Coil Power Out Stage 3 Short To Gnd

P1391 ⁽¹⁾

⁽¹⁾ 17799

CMP Sensor Short To Ground

P1392 ⁽¹⁾

⁽¹⁾ 17800

CMP Sensor Open Ckt Or Short To B+

P1393 ⁽¹⁾

⁽¹⁾ 17801

Ign. Coil Power Out Stage 1 Elect. Error

P1394 ⁽¹⁾

⁽¹⁾ 17802

Ign. Coil Power Out Stage 1 Elect. Error

P1395 ⁽¹⁾

⁽¹⁾ 17803

Ign. Coil Power Out Stage 1 Elect. Error

P1396 ⁽¹⁾

⁽¹⁾ 17804

Engine Speed Sensor Missing Tooth

P1400 ⁽¹⁾

⁽¹⁾ 17808

EGR Valve Ckt Malfunction

P1402 ⁽¹⁾

⁽¹⁾ 17810

EGR Valve Ckt Short To B+

P1407 ⁽¹⁾

⁽¹⁾ 17815

EGR Temperature Sensor Signal Too Low

P1408 ⁽¹⁾

⁽¹⁾ 17816

EGR Temperature Sensor Signal Too High

P1409 ⁽¹⁾

⁽¹⁾ 17817

Fuel Tank Vent Valve Electrical Problem

P1410 ⁽¹⁾

⁽¹⁾ 17818

Fuel Tank Vent Valve Short To B+

P1500 ⁽¹⁾

⁽¹⁾ 17908

Fuel Pump Relay Ckt Malfunction

P1504 ⁽¹⁾

⁽¹⁾ 17912

Intake Air System Bypass Air Determined

P1505 ⁽¹⁾

⁽¹⁾ 17913

CTP Switch Does Not Close (Open Ckt)

P1506 ⁽¹⁾

⁽¹⁾ 17914

CTP Switch Does Not Open (Short To Gnd)

P1509 ⁽¹⁾

⁽¹⁾ 17917

IAC Ckt Electrical Malfunction

P1510 ⁽¹⁾

⁽¹⁾ 17918

IAC Ckt Short To B+

P1511 ⁽⁴⁾

⁽⁴⁾ 17919

Intake Manifold Change-Over Valve Ckt

P1512 ⁽⁴⁾

⁽⁴⁾ 17920

Intake Manifold Change-Over Valve Ckt Short To B+

P1600 ⁽⁴⁾

⁽⁴⁾ 18008

Power Supply (B+) Terminal 15 Low Volts

P1602 ⁽¹⁾

⁽¹⁾ 18010

Power Supply (B+) Terminal 30 Low Volts

P1606 ⁽⁴⁾

⁽⁴⁾ 18014

Rough Road/Accel. Sensor Malfunction

P1611 ⁽¹⁾

⁽¹⁾ 18019

MIL Call-Up/TCM Short To Ground

P1612 ⁽¹⁾

⁽¹⁾ 18020

PCM Incorrectly Coded

P1613 ⁽¹⁾

⁽¹⁾ 18021

MIL Call-Up Ckt Open Or Short To B+

P1711 ⁽⁵⁾

⁽⁵⁾ 00283

Wheel Speed Signal 1 Range/Performance

P1716 ⁽⁵⁾

⁽⁵⁾ 00285

Wheel Speed Signal 2 Range/Performance

P1726 ⁽⁵⁾

⁽⁵⁾ 00290

Wheel Speed Signal 4 Range/Performance

P1728 ⁽⁵⁾

⁽⁵⁾ 00597

Different Wheel Speed Signals Range/Performance

P1746 ⁽⁵⁾

⁽⁵⁾ 00532

Trans Control Module Relay Malfunction

P1749 ⁽⁵⁾

⁽⁵⁾ 01044

Trans Control Module Incorrect Coding

P1766 ⁽⁵⁾

⁽⁵⁾ 00638

Throttle Angle Signal Stuck Off

P1767 ⁽⁵⁾

⁽⁵⁾ 00638

Throttle Angle Signal Stuck On

P1778 ⁽⁵⁾

⁽⁵⁾ 00270

Solenoid EV7 Electrical Malfunction

P1780 ⁽⁵⁾

⁽⁵⁾ 00545

Engine Intervention Readable

⁽¹⁾	MIL is switched on immediately.

⁽²⁾	MIL is switched on after 2 trips.

⁽³⁾	MIL is switched on after 2 trips or will blink.

⁽⁴⁾	MIL is not switched on.

⁽⁵⁾	See AUDI TYPE 01V ELECTRONIC CONTROLS & OVERHAUL article in AUTOMATIC TRANSMISSIONS.

RENDER: 1.0x

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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.