You will typically see one of three sub-codes or statuses alongside DF049: Broken wiring or disconnected plug.

: Use a diagnostic tool like the Renault CAN CLIP to clear the stored fault after physical repairs. 2. DF049 in Automatic Transmissions (DPO Gearbox)

In official Renault technical manuals (Technotes), DF049 is explicitly defined as the Refrigerant Pressure Sensor Circuit ( Circuit Capteur Pression Fluide Frigorigène ).