In rare cases, the issue lies inside the ECU where the tracks connect to the EGR driver. This requires professional ECU repair.

If you have plugged a Renault CLIP diagnostic tool into your Scenic and encountered code DF045, you are likely dealing with a sensor plausibility or circuit fault. This guide explains exactly what DF045 means, how to fix it, and the associated repair costs for the Renault Scenic.

Here are the proven repairs, from simplest to most advanced.

If you're considering purchasing a used DF045 Scenic, here are some tips:

DF045 is a proprietary Renault fault code that typically relates to the Electric Power Steering (EPS) system, specifically a communication or voltage supply issue with the power steering control unit.

While generic scanners might show "U0428" (Steering Angle Sensor Signal), DF045 is more precise. According to Renault’s DDT2000 software and CLIP diagnostic tools, DF045 translates to: "Electric power steering: Supply voltage outside tolerance range or internal electronic fault."

In layman's terms: The computer that controls your steering assist is either not getting the right voltage, or its internal circuits are failing.

Do not simply clear the code and hope it goes away. Use this systematic approach.

DF045 doesn't always trigger a check engine light (MIL). Instead, you’ll notice one or more of the following:

Important: DF045 is intermittent by nature. You may drive for weeks without symptoms, only to have the dashboard die completely in heavy rain or on a bumpy road.