ModerateAffected: 2012-201940,000–90,000 miles

Peugeot 208 Mk1 1.6 BlueHDi 100bhp — EGR Valve Carbon Build-Up

EGR failure on the 208 BlueHDi follows the established PSA pattern — carbon deposits restrict the valve, causing power loss and rough running.

Severity

Moderate

DIY Difficulty

Moderate

Est. Cost

£100–£450

OBD Codes

P0400P0401

Component Diagram

EGR

Typical layout and location for the EGR assembly.

Reference Illustration

Symptoms

EML and power loss
Rough idle
Increased fuel consumption
P0400/P0401 codes

Root Cause

Carbon from recirculated exhaust gas coats the EGR valve. The city-friendly 208 is often used in the exact conditions that accelerate EGR fouling.

How To Fix

Remove and clean EGR valve
Clean intake manifold
Replacement EGR: £100-250
Fitted: £250-450

Estimated Repair Costs

Repair Option	Est. Cost (GBP)
DIY (parts only)	£40–£180
Independent Garage	£100–£450
Main Dealership	£160–£720

Other Faults on This Variant

Timing Belt Failure (60,000-Mile Interval)

Critical

2012-20191–60,000 miles£300–£550

The 1.6 BlueHDi carries forward the PSA 60,000-mile timing belt interval from the 207. Many 208 owners are unaware — belt failure destroys the engine.

DPF Blockage

Moderate

2012-201930,000–70,000 miles£200–£1000

Urban 208 BlueHDi drivers regularly face DPF blockage warnings. The small diesel is not suited to short city trips.

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