The Citroën YHZ (engine code DV5RC) is a 1,398 cc, inline-four naturally aspirated petrol engine produced between 2002 and 2011. Developed by PSA Group, it features a cast-iron block, aluminium head, and multi-point fuel injection (MPFI), delivering 70 kW (95 PS) at 5,750 rpm and 133 Nm of torque at 4,000 rpm. With a timing belt-driven SOHC valvetrain and 10.8:1 compression ratio, it was engineered for reliability and fuel efficiency in compact city cars.
Fitted to models such as the Citroën C3, C2, and Peugeot 206, the DV5RC was designed for urban mobility with smooth throttle response and low ownership costs. Emissions compliance was achieved through a three-way catalytic converter and closed-loop lambda control, enabling Euro 3 compliance across its initial production run, with later models meeting Euro 4 standards via revised ECU mapping and oxygen sensor integration.
One documented concern is intake manifold vacuum leaks due to plastic housing brittleness, particularly in vehicles operating in extreme temperature cycles. This issue, referenced in PSA Service Bulletin SIB-ENG-2007-05, can lead to lean mixture faults and idle instability. From 2006, PSA introduced a revised intake manifold with improved UV and thermal resistance to enhance long-term sealing integrity.
Production years 2002–2005 meet Euro 3 standards; 2006–2011 models comply with Euro 4 depending on market (VCA UK Type Approval #VCA/EMS/8134).
The Citroën DV5RC is a 1,398 cc inline-four naturally aspirated petrol engine engineered for compact hatchbacks (2002–2011). It combines a durable iron-block design with SOHC 8-valve architecture and MPFI to deliver reliable everyday performance and low maintenance costs. Designed to meet Euro 3 and Euro 4 standards, it balances efficiency with durability in urban environments.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,398 cc | |
| Fuel type | Petrol | |
| Configuration | Inline-4, SOHC, 8-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 78.5 mm × 72.0 mm | |
| Power output | 70 kW (95 PS) @ 5,750 rpm | |
| Torque | 133 Nm @ 4,000 rpm | |
| Fuel system | Multi-point fuel injection (Siemens Simos 3P) | |
| Emissions standard | Euro 3 (2002–2005); Euro 4 (2006–2011) | |
| Compression ratio | 10.8:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Timing belt (SOHC, front-mounted) | |
| Oil type | Total Multis 5W-30 (PSA B71 2100) | |
| Dry weight | 106 kg |
The naturally aspirated SOHC design provides predictable throttle response ideal for city driving but requires strict adherence to 60,000 km or 4-year timing belt replacement intervals to prevent valve damage. Total Multis 5W-30 oil meeting PSA B71 2100 specification is essential for maintaining valve train longevity. The Siemens Simos 3P engine management system is robust but sensitive to vacuum leaks and worn spark plugs. Pre-2006 engines with known intake manifold brittleness should be inspected for cracks; revised manifolds were introduced in 2006 per PSA SIB-ENG-2007-05. Lambda sensor health should be monitored to maintain emissions compliance and fuel economy.
Oil Specs: Requires PSA B71 2100 specification (PSA SIB-ENG-2007-05). Compatible with ACEA A2 but not a substitute.
Emissions: Euro 3 applies to 2002–2005 models (VCA Type Approval #VCA/EMS/8134). Euro 4 compliance from 2006 onward varies by market.
Power Ratings: Measured under ECE R85 standards. Output consistent across fuel grades (RON 95 minimum).
PSA Technical Information System (TIS): Docs P14000, P14120, SIB-ENG-2007-05
VCA Type Approval Database (VCA/EMS/8134)
ISO 1585:1992 Road vehicles — Test code for net power
The Citroën YHZ (DV5RC) was used across Citroën's B-segment platforms with transverse mounting and shared with Peugeot under PSA Group standardization. This engine received platform-specific calibrations—tuned idle control in the C3 and revised intake tuning in the C2—and from 2006, Euro 4-compliant variants featured updated ECU mapping and oxygen sensor integration, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the front-facing side of the cylinder block near the exhaust manifold (PSA TIS P14000). The 8th VIN digit indicates engine type ('F' for DV5RC). Pre-2006 models have a silver valve cover with black plastic timing cover; post-2006 units use a black valve cover. Critical differentiation from DV5FD: DV5RC has 8 valves and SOHC, while DV5FD (16v) uses DOHC and 16 valves. Service parts require model-year verification—intake manifolds and ECUs for pre-2006 engines are not interchangeable with post-revision units due to emissions changes (PSA SIB-ENG-2007-05).
The DV5RC's primary reliability risk is intake manifold cracking, with elevated incidence in vehicles exposed to extreme temperature cycles. PSA internal field reports from 2008 indicated a significant share of pre-2006 units required manifold replacement before 100,000 km, while UK DVSA data shows increased lean mixture-related MOT failures in older examples. Extended service intervals and poor-quality coolant exacerbate thermal stress, making proactive inspection critical.
Analysis derived from PSA technical bulletins (2005–2010) and UK DVSA failure statistics (2015–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about CITROEN YHZ-DV5RC.
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