Engines included:
- 1.6 8V Petrol (ALZ)
- 1.8 20V Turbo Petrol (AMB)
- 1.8 20V Turbo Petrol (AVJ)
- 1.8 20V Turbo Petrol (BEX)
- 1.8 20V Turbo, -Cabriolet Petrol (BFB)
- 1.9 TDI Diesel (AVB)
- 1.9 TDI Diesel (AVF)
- 1.9 TDI Diesel (AWX)
- 1.9 TDI Diesel (BKE)
- 2.0 20V, -Cabriolet Petrol (ALT)
- 2.0 FSi Petrol (AWA)
- 2.4 V6 30V, -Cabriolet Petrol (AMM)
- 2.4 V6 30V, -Cabriolet Petrol (BDV)
- 2.5 TDI V6 Diesel (AKE)
- 2.5 TDI V6 Diesel (AYM)
- 2.5 TDI V6 Diesel (BAU)
- 2.5 TDI V6 Diesel (BDH)
- 2.5 TDI V6, -Cabriolet Diesel (BCZ)
- 2.5 TDI V6, -Cabriolet Diesel (BDG)
- 2.5 TDI V6, -Cabriolet Diesel (BFC)
- 3.0 V6 30V Petrol (AVK)
- 3.0 V6 30V Petrol (BGN)
- 3.0 V6 30V, -Cabriolet Petrol (ASN)
- 3.0 V6 30V, -Cabriolet Petrol (BBJ)
- S4 (4.2 V8), -Cabriolet Petrol (BBK)
Diagnostic Instructions
Connect an OBD scanner to your Audi A4 2001-2005 to retrieve diagnostic fault codes.
Applies to: 1.6 8V Petrol (ALZ), 1.8 20V Turbo Petrol (AMB), 1.8 20V Turbo Petrol (AVJ), 1.8 20V Turbo Petrol (BEX), 1.8 20V Turbo, -Cabriolet Petrol (BFB), 1.9 TDI Diesel (AVB), 1.9 TDI Diesel (AVF), 1.9 TDI Diesel (AWX), 1.9 TDI Diesel (BKE), 2.0 20V, -Cabriolet Petrol (ALT), 2.0 FSi Petrol (AWA), 2.4 V6 30V, -Cabriolet Petrol (AMM), 2.4 V6 30V, -Cabriolet Petrol (BDV), 2.5 TDI V6 Diesel (AKE), 2.5 TDI V6 Diesel (AYM), 2.5 TDI V6 Diesel (BAU), 2.5 TDI V6 Diesel (BDH), 2.5 TDI V6, -Cabriolet Diesel (BCZ), 2.5 TDI V6, -Cabriolet Diesel (BDG), 2.5 TDI V6, -Cabriolet Diesel (BFC), 3.0 V6 30V Petrol (AVK), 3.0 V6 30V, -Cabriolet Petrol (ASN), 3.0 V6 30V, -Cabriolet Petrol (BBJ), S4 (4.2 V8), -Cabriolet Petrol (BBK)
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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