We will dissect what this code means, why it plagues Renault’s premium lineup, how to differentiate it from generic OBD codes, and the step-by-step process to get your French luxury vehicle back on the road.

If you are preparing for an MOT (Ministry of Transport test), the "Exclusive" trim adds a few potential failure points that base models might not have.

As the Renault 25 bowed out in the early 1990s to make way for the Renault Safrane, the MOT 1654 engine lived on. It was carried over into the early models of the Safrane (specifically the , which confusingly used the 1.6 architecture in early trims before transitioning to 2.0 liters later).