ModerateAffected: 2006-201260,000–100,000 miles

Peugeot 207 1.6 HDi 90bhp — DPF Blockage and Eolys Fluid Depletion

Peugeot uses a wet DPF system requiring an additive (Eolys/Cerine fluid) to lower the burning temperature of soot. The fluid runs out, or the DPF blocks from short trips.

Severity

Moderate

DIY Difficulty

Professional Only

Est. Cost

£200–£500

OBD Codes

P1445P1446P242F

Component Diagram

DPF

Typical layout and location for the DPF assembly.

Reference Illustration

Symptoms

'Depollution System Faulty' warning on dash
'Risk of Particle Filter Blocking' warning
Limp mode
High fuel consumption

Root Cause

The Eolys fluid pouch/tank needs refilling every 60k-80k miles. If it runs empty, the DPF cannot regenerate properly. Ash also naturally fills the DPF over 100k miles.

How To Fix

Check Eolys fluid level via diagnostics and physically top up the tank/pouch (£150-200)
Tell the ECU the fluid has been topped up (requires Peugeot Diagbox or good OBD tool)
Force DPF regeneration
If DPF is ash-filled, replace the DPF (£300-500)

Estimated Repair Costs

Repair Option	Est. Cost (GBP)
DIY (parts only)	£80–£200
Independent Garage	£200–£500
Main Dealership	£320–£800

Other Faults on This Variant

Timing Belt Failure (60,000 Mile Interval)

Critical

2006-20121–60,000 miles£300–£600

The PSA 1.6 HDi engine has a 60,000-mile or 4-year timing belt interval — much shorter than most competitors. Belt failure destroys the engine. Many 207 owners are unaware of this critical maintenance item.

Injector Seal Leak (Chuffing / Black Death)

Severe

2006-201250,000–100,000 miles£150–£600

Copper injector seals fail, allowing exhaust gases and unburnt diesel to escape and coat the top of the engine in a hard black tar affectionately known as 'Black Death'.

Turbo Oil Starvation and Destruction

Critical

2006-201260,000–120,000 miles£700–£1200

The 1.6 HDi (DV6) engine is infamous for destroying turbos. The cause is almost always oil sludge blocking the tiny gauze filter in the turbo oil feed pipe.

Disclaimer: Repair cost estimates are indicative and based on community data. Always get a quote from a qualified mechanic before proceeding with any repair.