DPF Additive Low? What the ‘Engine Fault’ Warning Means on Peugeot, Citroën, Ford & Volvo
If you’re seeing warnings like “Engine fault: Have the vehicle repaired” or “Particle Filter additive level too low” on your dashboard, you’re not alone. These messages are especially common in Peugeot, Citroën, Ford, and Volvo vehicles that use the DPF additive system, often referred to as Eolys fluid or the PATS system.