Df417 — Renault

While the code specifically refers to a "signal absent" or "invalid information", the underlying cause is frequently a voltage issue . Renault electronics are highly sensitive; a dying battery or a faulty alternator can cause the communication network to drop signals, throwing "phantom" codes like DF417.

On models like the Renault Fluence or Megane, DF417 often indicates a problem with the Gearbox Acceleration Sensor circuit . This can manifest as an "open circuit" or "short circuit," directly impacting the transmission's ability to shift smoothly or predictably. renault df417