Is it safe to drive with Mercedes E220 CDI OM651 DPF blocked — regeneration failure?

Drive with caution to the nearest garage. Avoid motorway speeds until the fault is diagnosed.

What is the most common fix for Mercedes E220 CDI OM651 DPF blocked — regeneration failure?

Forced DPF regeneration at workshop

How much does it cost to fix Mercedes E220 CDI OM651 DPF blocked — regeneration failure?

Based on driver reports, repair costs typically range from $100 to $1500. Costs vary by make, model and location.

🟡 Mercedes E220 CDI OM651 DPF blocked — regeneration failure

Mercedes-Benz E-Class 2012

Safe to Drive?

⚠️ Drive with Caution

Urgency Level

🟢 Low Priority

DPF warning light with reduced engine power. The OM651 diesel particulate filter blocks prematurely on vehicles used predominantly in urban conditions. The engine management system attempts forced regeneration but the exhaust temperatures required cannot be reached in slow traffic. A professional forced regeneration using diagnostic equipment clears the filter. Fitting a DPF cleaning additive to the fuel tank before the next motorway run helps maintain filter cleanliness.