The Renault fault code (often equivalent to DF1012 ) is a common "ghost" or secondary code. It indicates that the Cruise Control/Speed Limiter system has been disabled because the Engine Control Unit (ECU) has detected a fault in another primary system. 1. Understanding the Code

: Renault CLIP diagnostic interface or a high-end scanner (e.g., Autel, Launch with Renault software).

The Renault 12 was never about speed; it was about durability and ease of maintenance.