PSA DV6C 1.6 BlueHDi Injector Problems: Symptoms & Repair (UK)

The DV6C is the Euro 6 evolution of the DV6, badged as BlueHDi. It adds AdBlue SCR and a more advanced injection system. Found in the Peugeot 208/308 and Citroen C3/C4.

Common DV6C injector failure symptoms

• Rough idle and AdBlue warnings: Injector wear increases NOx, triggering AdBlue system warnings.
• DPF regeneration issues: Frequent or failed regeneration cycles from poor combustion.
• Engine management light: Injector and SCR-related fault codes.

Why DV6C injectors fail

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

How to diagnose DV6C injector faults

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.

Fault codes linked to DV6C injector issues

• P0201-P0204 – Injector circuit malfunction
• P20EE – SCR NOx efficiency below threshold

DV6C repair advice

DV6C injectors require coding via Diagbox. The AdBlue system should be checked and recalibrated after injector replacement if NOx codes are present.

DV6C injector replacement cost (UK)

• Per injector: £180 - £350
• Full set: £700 - £1,200
• Labour: £120 - £300

Compatible injector part numbers for DV6C

• Bosch 0445110566 – Bosch injector for DV6C BlueHDi
• PSA 9812217080 – PSA OE reference

Vehicles using the DV6C engine

• Peugeot 208 (2015-2019)
• Peugeot 308 (2014-2021)
• Citroen C3 (2016-2020)
• Citroen C4 Cactus (2014-2020)

Find your exact DV6C injector by registration

Frequently asked questions

Is the 1.6 BlueHDi the same as the 1.6 HDi?

The BlueHDi is the Euro 6 version with AdBlue SCR. The engine block is similar but the injection system and injectors may differ.

How much does DV6C injector replacement cost?

A set of four costs £350-£600. Labour is 2-3 hours.

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.