Your DPF Light Just Came On. Here’s What It Means.

Illuminated DPF warning light on a diesel vehicle instrument cluster

A DPF warning light isn’t a service reminder — it’s a countdown. Steady light, engine light alongside it, or flashing all mean different things, and the difference decides whether this is a 30-minute drive or a workshop bill. Here’s how to tell which one you’re looking at, and what to do today.