Description And Operation: Notes
WARNING: This page is about a different car, the 2025 Audi A4 allroad and 2025 Audi A4 Quattro. However, it is still accessible from the selected car via links, so may be relevant.
- ON BOARD DIAGNOSTIC SYSTEMS
- EVAPORATIVE EMISSION SYSTEM
- ELECTRONIC THROTTLE CONTROL (ETC) SYSTEM
- ELECTRONIC POWER CONTROL (EPC) WARNING LAMP
- ENGINE CONTROL MODULE (ECM)
- MALFUNCTION INDICATOR LAMP (MIL)
- CONTROLLER AREA NETWORK (CAN)
- FUEL SUPPLY
- IGNITION AND TIMING
- VARIABLE VALVE TIMING
- EXHAUST-GAS RECIRCULATION (EGR) SYSTEM
- SECONDARY AIR INJECTION
- EXHAUST SYSTEMS