The Citroën 9HY, known internally as DV6TED4, is a 1,560 cc, inline — four turbocharged diesel engine produced between 2011 and 2018. It features a DOHC 16 — valve configuration, high — pressure common — rail direct injection (up to 1,600 bar), and a variable geometry turbocharger (VGT). In standard tune, it delivers 88 kW (120 PS) at 3,600 rpm and 300 Nm of torque at 1,750 rpm, primarily used in compact and mid — size passenger vehicles.
Fitted to models such as the Citroën C4 Pic…
Production years 2011–2015 meet Euro 5 standards; 2016–2018 models comply with Euro 6b depending on market (VCA UK Type Approval #VCA/EMS/6789).
The Citroën 9HY (DV6TED4) is a 1,560 cc inline-four turbocharged diesel engine designed for compact and mid-size platforms (2011–2018). It combines common-rail direct injection with a variable geometry turbocharger to deliver strong low-RPM torque and efficient cruising. Designed to meet Euro 5 and later Euro 6b standards, it balances economy with drivability in family-oriented applications.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,560 cc | |
Fuel type | Diesel (ULSD, EN 590 compliant) | |
Configuration | Inline-4, DOHC, 16-valve | |
Aspiration | Turbocharged (variable geometry) | |
Bore × stroke | 75.0 mm × 88.3 mm | |
Power output | 88 kW (120 PS) @ 3,600 rpm | |
Torque | 300 Nm @ 1,750 rpm | |
Fuel system | Delphi HP4 common-rail (up to 1,600 bar) | |
Emissions standard | Euro 5 (2011–2015); Euro 6b (2016–2018) | |
Compression ratio | 16.0:1 | |
Cooling system | Water-cooled | |
Turbocharger | Honeywell variable geometry turbo (VNT) | |
Timing system | Timing belt (renew every 190,000 km or 10 years) | |
Oil type | Total Rubia TIR 5W-30 | |
Dry weight | 148 kg |
The Citroën 9HY (DV6TED4) was used across Citroën's B- and C-segment platforms with transverse mounting and shared with Peugeot and Opel under PSA group harmonization. This engine received platform-specific calibrations-adaptive throttle mapping in the C4 Picasso and revised EGR routing in the C3-and from 2016, Euro 6b-compliant variants introduced cooled EGR and enhanced lambda control, creating interchange limits. All adaptations are documented in OEM technical bulletins.
The DV6TED4's primary reliability risk is high-pressure fuel pump (HPFP) failure on early builds, with elevated incidence in urban driving with frequent short trips. PSA internal field reports from 2015 indicated a significant share of pre-2014 units required HPFP replacement before 100,000 km, while UK DVSA MOT records show increased emissions failures linked to fuel system faults in stop-start conditions. Extended idling and poor fuel quality exacerbate wear, making fuel system and lubrication maintenance critical.
Analysis derived from PSA technical bulletins (2013-2017) and UK DVSA failure statistics (2014-2022). Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
The DV6TED4 is generally reliable when maintained properly. Early models (2011–2013) had high-pressure fuel pump concerns, but post-2014 revisions improved durability. Regular timing belt changes (every 190,000 km or 10 years) and using PSA-approved 5W-30 oil significantly enhance longevity. Well-maintained engines can exceed 200,000 km reliably.
Key issues include high-pressure fuel pump failure (pre-2014), DPF clogging due to short trips, turbo actuator sticking, and timing belt failure if overdue. These are documented in PSA service bulletins. Preventive maintenance and proper driving habits greatly reduce risk.
This 1.6L diesel was used in Citroën C3 (2011–2017) and C4 Picasso (2012–2018). It was also shared with Peugeot 308 and Opel Zafira Tourer under PSA platform-sharing agreements. Models from 2016–2018 meet Euro 6b standards.
Yes. The engine responds well to ECU remapping, with stage 1 tunes safely achieving 140–150 PS. Supporting mods like intercooler and exhaust upgrades allow further gains. However, over-tuning increases stress on the fuel pump and turbo. Use reputable tuners familiar with PSA HDi systems.
Excellent for a diesel. In a C4 Picasso 1.6 HDi 120, combined consumption is ~4.8 L/100 km (~59 mpg UK). City driving may see 5.5–6.0 L/100 km, while highway runs can achieve ~4.2 L/100 km (~67 mpg UK). Real-world figures depend on driving style and vehicle load.
Yes. The DV6TED4 is an interference engine. If the timing belt fails or jumps, piston-to-valve contact will occur, causing severe internal damage. Strict adherence to 190,000 km or 10-year replacement intervals is essential. Any timing-related symptoms must be addressed immediately.
PSA specifies Total Rubia TIR 5W-30 (meets PSA B71 2290). This low-SAPS oil protects the DPF and turbocharger. Change every 15,000 km or annually. Using incorrect oil can lead to DPF blockage and fuel system wear.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with CITROEN or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
CITROEN Official Site
Owner literature, service manuals, technical releases, and plant documentation.
EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialCITROEN documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed”.
All external links open in new tabs. Please verify current availability of resources.