Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSAUDI1998A4 AVANT QUATTRO, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)GENERAL INFORMATIONDTC INDEXABS/TRACTION CONTROL DTCS (BOSCH 5.0L)
1998 Audi A4 Avant Quattro, Automatic
Abs/Traction Control DTCS (BOSCH 5.0L)
1998 Audi A4 Avant Quattro, AutomaticSECTION Abs/Traction Control DTCS (BOSCH 5.0L)
ABS/TRACTION CONTROL DTCS (BOSCH 5.0)
| Code | Fault Description | ||
|---|---|---|---|
| DTC 00000 | No Fault Detected | ||
| DTC 00257 | Left Front Inlet Valve Circuit | ||
| DTC 00259 | Right Front Inlet Valve Circuit | ||
| DTC 00265 | Left Front Outlet Valve Circuit | ||
| DTC 00267 | Right Front Outlet Valve Circuit | ||
| DTC 00273 | Left Rear Inlet Valve Circuit | ||
| DTC 00274 | Right Rear Inlet Valve Circuit | ||
| DTC 00275 | Right Rear Outlet Valve Circuit | ||
| DTC 00276 | Left Rear Outlet Valve Circuit | ||
| DTC 00277 | Left Front Inlet/Outlet Valve Circuit | ||
| DTC 00283 | Left Front Wheel Speed Sensor | ||
| DTC 00284 | Right Front Wheel Speed Sensor | ||
| DTC 00285 | Right Front Wheel Speed Sensor | ||
| DTC 00286 | Left Rear Wheel Speed Sensor | ||
| DTC 00287 | Right Rear Wheel Speed Sensor | ||
| DTC 00289 | Right Rear Inlet/Outlet Valve Circuit | ||
| DTC 00290 | Left Rear Wheel Speed Sensor | ||
| DTC 00301 | ABS Return Flow Pump | ||
| DTC 00302 | ABS Solenoid Valve | ||
| DTC 00526 | Stoplight Switch/All-Wheel Drive Circuit | ||
| DTC 00529 | RPM Data Missing (TCS Only) | ||
| DTC 00532 | Supply Voltage | ||
| DTC 00597 | Varying (Erratic) Wheel Speed Signal | ||
| DTC 00623 | ABS/Transmission Circuit (TCS Only) | ||
| DTC 00642 | Right Front EDL Switchover Valve (EDL Only) | ||
| DTC 00643 | Right Front EDL Outlet Valve (EDL Only) | ||
| DTC 00644 | Left Front EDL Switchover Valve (EDL Only) | ||
| DTC 00645 | Left Front EDL Outlet Valve (EDL Only) | ||
| DTC 00646 | TCS/Motor Electrical Connection No. 1 | ||
| DTC 00647 | TCS/Motor Electrical Connection No. 2 | ||
| DTC 00668 | Battery Positive Terminal 30 | ||
| DTC 00761 | DTC Stored In ECM (TCS Only) | ||
| DTC 65535 | Control Module Fault | ||
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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.