What does the PSA anti-pollution fault mean?

The 'Anti-pollution fault' warning covers a range of emissions-related issues. Injector failure is one of the most common causes, alongside DPF and EGR problems.

Is the DW10C the same as the DW10B?

They are related but different engines. The DW10C is the updated Euro 5/6 version with improved fuel injection and emissions systems. Injector part numbers differ between variants.

Can I drive with the anti-pollution fault?

You can drive short distances, but the engine may be in limp mode with reduced power. Prolonged driving risks damage to the DPF and catalytic converter.

How much does DW10C injector replacement cost?

Remanufactured DW10C injectors cost approximately £120-£180 each. A full set of four with fitting typically costs £700-£1,100 including labour.

How much does it cost to replace injectors?

Replacement typically costs £150–£350 per injector depending on brand and engine. A full set of four with professional fitting usually costs £600–£1,200.

Can I drive with a faulty injector?

Driving with a faulty injector can cause engine damage, increased fuel consumption, DPF contamination, and oil dilution. We recommend diagnosis and replacement as soon as possible.

Do new injectors need coding?

Some vehicles require injector coding after replacement using manufacturer-specific diagnostic tools. Many Bosch solenoid units are plug and play. Check your engine guide for specific requirements.

Why is my diesel injector knocking?

Diesel injector knocking is typically caused by worn nozzle tips that alter the fuel spray pattern, leading to harsher combustion. Carbon buildup, incorrect injection timing, and high fuel pressure can also contribute. A professional leak-off test can confirm whether injectors are the cause.

Can a bad injector cause white smoke?

Yes. A faulty injector that dribbles fuel instead of atomising it causes incomplete combustion, producing white or grey smoke. This is especially noticeable on cold starts and typically clears as the engine warms up.

How long do diesel injectors last?

Most diesel injectors last between 80,000 and 150,000 miles depending on fuel quality, driving conditions, and maintenance. Regular fuel filter changes and using quality diesel can extend their lifespan.

Will injector cleaner fix misfire?

Injector cleaner may help with minor carbon deposits, but it cannot fix worn nozzles, failed solenoids, or internal seal leaks. If misfire persists after using cleaner, professional testing and likely replacement is needed.

DW10C Injector Problems: Symptoms, Fault Codes & Replacement Costs

Updated for 2026 diagnostics & repair guidance

Common failure compared to Ford Transit 2.2 TDCi & VW 1.6 TDI injector faults.

The DW10C diesel engine is widely used in the Peugeot 308, 3008, 508, Citroen C4, C5, and DS5. Over time, fuel injectors may develop faults that affect performance, starting, and emissions. This guide helps you diagnose injector issues and determine when replacement is required.

OEM tested & calibrated12-month warrantyFree UK deliveryNo coding required (most models)

OEM Tested
12-Month Warranty
Free UK Delivery

Registration Lookup Find Matching DW10C Injector

Drivers also ask

Quick Diagnosis

If your DW10C engine shows:

rough idle
hard starting
white or black smoke
knocking or ticking noise
reduced fuel economy

A faulty injector may be the cause. Continue below to confirm symptoms and solutions.

Can You Drive With This Problem?

Driving short distances may be possible, but continued use can cause:

piston damage
turbo contamination
fuel dilution of engine oil
catalytic converter damage

Prolonged driving may lead to major engine failure.

Typical Repair Costs (UK)

Average costs for injector-related repairs:

£180 - £350

Per Injector

£700 - £1,200

Full Set (4)

£120 - £300

Labour

Early replacement prevents costly engine damage.

Common Injector Failure Symptoms

Owners frequently report:

Lumpy idle with engine vibration

The DW10C develops a characteristic lumpy idle when injectors begin to fail. The vibration is most noticeable with the engine at operating temperature and in gear at a standstill.

White or grey smoke at startup

Cold-start smoke that takes longer than 30 seconds to clear indicates one or more injectors are not atomising fuel correctly.

Anti-pollution fault message

The PSA 'Anti-pollution fault' warning on the dashboard is often caused by injector issues affecting emissions control.

Reduced power in limp mode

The ECU enters limp mode when injector performance falls outside acceptable parameters, limiting power to protect the engine.

Excessive fuel consumption

DW10C injector failures commonly increase fuel consumption by 10-15%, most noticeable on longer motorway journeys.

Full symptom guide White smoke guide

Fault Codes Linked to Injector Issues

Common diagnostic codes include:

P0201-P0204Injector circuit malfunction (cylinders 1-4)

P1164Fuel injection system malfunction (PSA specific)

P0087Fuel rail system pressure too low

P0300Random/multiple cylinder misfire

P242FDPF restriction — ash/soot accumulation

Misfire diagnosis guide

How to Diagnose DW10C Injector Faults

Follow this step-by-step testing approach to identify the faulty injector:

1
Read fault codes
Connect an OBD-II scanner and note any injector-related codes (P0201–P0204, P2146, P2149). This identifies which cylinder is affected.
2
Perform a leak-off test
Disconnect the fuel return pipes and route into measuring containers. Run the engine at idle for 60 seconds. Compare volumes per cylinder against manufacturer spec.
3
Listen for injector tick
Use a mechanic's stethoscope on each injector body. A dead or irregular tick indicates a stuck or failing solenoid.
4
Check fuel rail pressure
Monitor live fuel rail pressure data via diagnostic tool. Low pressure can mimic injector symptoms and may indicate a fuel pump issue instead.
5
Inspect for external leaks
Check around injector seals for signs of fuel or combustion gas leakage. Black carbon deposits indicate a blown seal.
6
Cylinder balance test
Use diagnostic software to run a cylinder contribution test. This electronically disables each injector in turn to measure its effect on engine speed.

Full leak-off test guide Injector coding guide

Why DW10C Injectors Fail

Common causes include:

fuel contamination
high-pressure wear cycles
carbon buildup
poor fuel quality
internal valve wear

Professional remanufacturing restores spray pattern and pressure accuracy.

When Replacement Is Required

Injector replacement is recommended if:

leak-off test fails
misfire persists after coding
excessive return flow detected
spray pattern fails testing
vehicle enters limp mode

DW10C Repair Advice

The DW10C requires injector coding via Peugeot Planet/Diagbox or compatible PSA diagnostic tool. On BlueHDi models, check the AdBlue system is functioning correctly after injector replacement. We recommend clearing all fault codes and performing a forced DPF regeneration after fitting new injectors.

Remanufactured (Recommended)

OEM-spec rebuild with new nozzles, seals, and solenoids. Full flow testing. 12-month warranty. 40–60% less than new.

Brand New OEM

Factory-fresh from Bosch, Delphi, or Siemens. Highest cost but zero previous wear. Best for low-mileage vehicles.

Vehicles Using the DW10C Engine

This engine is commonly found in:

Peugeot 308

2.0 BlueHDi · 2013-present

Peugeot 3008

2.0 BlueHDi · 2013-present

Peugeot 508

2.0 HDi/BlueHDi · 2010-present

Citroen C4

2.0 HDi/BlueHDi · 2010-present

Citroen C5

2.0 HDi · 2010-2017

Citroen DS5

2.0 HDi Hybrid4 · 2011-2018

Professional Installation Tip

Always:

replace copper sealing washers
torque injectors to manufacturer specification
clean injector seats before installation
code injectors after installation (if required)

Leak-off test guide Injector coding guide

Compatible Injector Part Numbers for DW10C

The following injector part numbers are commonly associated with DW10C engines:

9674973080

Continental/Siemens injector for DW10C BlueHDi

£110.00View details

Also commonly fitted:

0445110566Bosch9688438580PSA

These injectors are commonly used with the DW10C engine. Confirm compatibility using your engine code or registration lookup before ordering. Our team can verify the correct part for your specific vehicle.