Engines included:
- 1.6 Petrol (ADP)
- 1.6 Petrol (AHL)
- 1.6 Petrol (ALZ)
- 1.6 Petrol (ANA)
- 1.8 20V Petrol (ADR)
- 1.8 20V Petrol (AFY)
- 1.8 20V Petrol (APT)
- 1.8 20V Petrol (ARG)
- 1.8 20V Petrol (AVV)
- 1.8 20V Turbo Petrol (AEB)
- 1.8 20V Turbo Petrol (AJL)
- 1.8 20V Turbo Petrol (ANB)
- 1.8 20V Turbo Petrol (APU)
- 1.8 20V Turbo Petrol (ARK)
- 1.8 20V Turbo Petrol (AWT)
- 1.8 T 20V Petrol (ATW)
- 1.9 TDI Diesel (1Z)
- 1.9 TDI Diesel (AFF)
- 1.9 TDI Diesel (AFN)
- 1.9 TDI Diesel (AHH)
- 1.9 TDI Diesel (AHU)
- 1.9 TDI Diesel (ATJ)
- 1.9 TDI Diesel (AVG)
- 2.4 V6 30V Petrol (AGA)
- 2.4 V6 30V Petrol (ALF)
- 2.4 V6 30V Petrol (AML)
- 2.4 V6 30V Petrol (AMM)
- 2.4 V6 30V Petrol (APS)
- 2.4 V6 30V Petrol (ARJ)
- 2.6 V6 Petrol (ABC)
- 2.8 V6 12V Petrol (AFC)
- 2.8 V6 30V Petrol (ACK)
- 2.8 V6 30V Petrol (AHA)
- 2.8 V6 30V Petrol (ALG)
- 2.8 V6 30V Petrol (AMX)
- 2.8 V6 30V Petrol (APR)
- 2.8 V6 30V Petrol (AQD)
- 2.8 V6 30V Petrol (ATQ)
- RS4 (2.7 V6) Petrol (ASJ)
- RS4 (2.7 V6) Petrol (AZR)
- S4 (2.7 V6) Petrol (AZB)
Diagnostic Instructions
Connect an OBD scanner to your Audi A4 1995-2002 to retrieve diagnostic fault codes.
Applies to: 1.6 Petrol (ADP), 1.6 Petrol (AHL), 1.6 Petrol (ALZ), 1.6 Petrol (ANA), 1.8 20V Petrol (ADR), 1.8 20V Petrol (AFY), 1.8 20V Petrol (APT), 1.8 20V Petrol (ARG), 1.8 20V Petrol (AVV), 1.8 20V Turbo Petrol (AEB), 1.8 20V Turbo Petrol (AJL), 1.8 20V Turbo Petrol (ANB), 1.8 20V Turbo Petrol (APU), 1.8 20V Turbo Petrol (ARK), 1.8 20V Turbo Petrol (AWT), 1.9 TDI Diesel (1Z), 1.9 TDI Diesel (AFF), 1.9 TDI Diesel (AFN), 1.9 TDI Diesel (AHH), 1.9 TDI Diesel (AHU), 1.9 TDI Diesel (ATJ), 1.9 TDI Diesel (AVG), 2.4 V6 30V Petrol (AGA), 2.4 V6 30V Petrol (ALF), 2.4 V6 30V Petrol (AML), 2.4 V6 30V Petrol (AMM), 2.4 V6 30V Petrol (APS), 2.4 V6 30V Petrol (ARJ), 2.6 V6 Petrol (ABC), 2.8 V6 30V Petrol (ACK), 2.8 V6 30V Petrol (ALG), 2.8 V6 30V Petrol (AMX), 2.8 V6 30V Petrol (APR), 2.8 V6 30V Petrol (AQD), RS4 (2.7 V6) Petrol (ASJ), RS4 (2.7 V6) Petrol (AZR), S4 (2.7 V6) Petrol (AZB)
Steps:
- Connect OBD scanner to diagnostic port
- Turn ignition to ON position (engine off)
- Follow scanner instructions to read codes
- Record any codes displayed
- Consult service manual for code meanings
Fault Codes including 978 manufacturer-specific
Powertrain
Body
Chassis
| Code | Description |
|---|---|
| C050B | Available in product |
| C0550 | Vacuum sensor 2 circuit high |
| C0551 | Longitudinal acceleration sensor circuit/open |
| C0651 | Left front wheel speed sensor 2 circuit/open |
| C0652 | Left front wheel speed sensor 2 range/performance |
| C0653 | Left front wheel speed sensor 2 circuit low |
| C0654 | Left front wheel speed sensor 2 circuit high |
| C0655 | Left front wheel speed sensor 2 intermittent/erratic |
| C0656 | Left front wheel speed sensor 2 correlation |
| C0657 | Left front wheel speed sensor 2 incorrect component installed |
| C0658 | Right front wheel speed sensor 2 circuit/open |
| C0659 | Right front wheel speed sensor 2 range/performance |
| C065A | Available in product |
| C065B | Available in product |
| C065C | Available in product |
| C065D | Available in product |
| C065E | Available in product |
| C065F | Available in product |
| C0660 | Left rear wheel speed sensor 2 range/performance |
| C0661 | Left rear wheel speed sensor 2 circuit low |
| C0662 | Left rear wheel speed sensor 2 circuit high |
| C0663 | Left rear wheel speed sensor 2 intermittent/erratic |
| C0664 | Left rear wheel speed sensor 2 correlation |
| C0665 | Left rear wheel speed sensor 2 incorrect component installed |
| C0666 | Right rear wheel speed sensor 2 circuit/open |
| C0667 | Right rear wheel speed sensor 2 range/performance |
| C0668 | Right rear wheel speed sensor 2 circuit low |
| C0669 | Right rear wheel speed sensor 2 circuit high |
| C066A | Available in product |
| C066B | Available in product |
| C066C | Available in product |
| C066D | Available in product |
| C066E | Available in product |
| C066F | Available in product |
| C0800 | Brake fluid |
| C100A | Available in product |
| C100B | Available in product |
| C100C | Available in product |
| C102D | Available in product |
| C104A | Available in product |
| C104C | Available in product |
| C104D | Available in product |
| C104E | Available in product |
| C105C | Available in product |
| C10C8 | Available in product |
| C10D0 | Available in product |
| C11CB | Available in product |
| C155E | Available in product |
| C3000 | Available in product |
Network
| Code | Description |
|---|---|
| U101D | Available in product |
| U101E | Available in product |
| U110B | Available in product |
| U11B8 | Available in product |
| U11B9 | Available in product |
| U11F3 | Available in product |
| U11F4 | Available in product |
| U121D | Available in product |
| U140A | Available in product |
| U140B | Available in product |
Other
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