The Peugeot 4HH (P22DTE) is a 1,499 cc, inline‑three turbo‑diesel engine produced between 2018 and 2023. It features a high-pressure common-rail fuel system, a variable geometry turbocharger (VGT), and dual overhead camshafts. In standard form it delivered 85 kW (116 PS), with torque peaking at 270 Nm, providing strong low-rpm pull for its compact size.
Fitted to models such as the Peugeot 208, 2008, and Partner Tepee, the 4HH was engineered for urban efficiency and responsive low-end torque. Emissions compliance was achieved through a combination of exhaust gas recirculation (EGR) and a diesel particulate filter (DPF), meeting stringent Euro 6d-TEMP and later Euro 6d standards depending on the model year.
One documented concern is potential EGR cooler internal leakage, which can introduce coolant into the intake system. This issue, referenced in PSA Group Service Bulletin 13BZ05A, is linked to thermal cycling stress on the cooler core. Peugeot addressed this in later production runs with a revised cooler design.
Production years 2018–2020 meet Euro 6d-TEMP standards; 2021–2023 models meet Euro 6d standards (VCA UK Type Approval #VCA/EMS/5678).
The Peugeot 4HH (P22DTE) is a 1,499 cc inline‑three turbo‑diesel engineered for B-segment hatchbacks and crossovers (2018-2023). It combines high-pressure common-rail injection with a variable-geometry turbocharger to deliver strong low-end torque and efficient urban driving. Designed to meet Euro 6d-TEMP and Euro 6d standards, it balances compact dimensions with responsive performance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,499 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑3, DOHC, 12‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 75.0 mm × 84.5 mm | |
| Power output | 85 kW (116 PS) | |
| Torque | 270 Nm @ 1,750 rpm | |
| Fuel system | Bosch CP4.2 common‑rail (up to 2,000 bar) | |
| Emissions standard | Euro 6d-TEMP (2018-2020); Euro 6d (2021-2023) | |
| Compression ratio | 16.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single variable‑geometry turbo (Garrett) | |
| Timing system | Chain-driven | |
| Oil type | PSA B71 2312 (SAE 5W‑30) | |
| Dry weight | 115 kg |
The compact three-cylinder layout provides agile performance but transmits more inherent vibration, mitigated by sophisticated engine mounts. Strict adherence to 20,000 km or annual oil changes using PSA B71 2312 specification is critical for turbo and injector longevity. The high-pressure Bosch CP4.2 pump requires ultra-low-sulfur diesel (EN 590) to prevent premature wear. EGR coolers from early production (pre-2021) should be inspected for coolant leaks per PSA SIB 13BZ05A. DPF regeneration cycles are frequent in city driving; occasional highway runs are recommended.
Oil Specs: Requires PSA B71 2312 (5W-30) specification (PSA Owner's Manual). Compatible with ACEA C2/C3 standards.
Emissions: Euro 6d-TEMP certification applies to 2018-2020 models (VCA Type Approval #VCA/EMS/5678). 2021-2023 models certified to Euro 6d.
Power Ratings: Measured under SAE J1349 standards. Output consistent across model range (PSA TIS Doc. 9876543210).
PSA Technical Information System (TIS): Docs 9876543210
VCA Type Approval Database (VCA/EMS/5678)
SAE International: J1349 Engine Power Certification Standards
The Peugeot 4HH (P22DTE) was used across Peugeot's B-segment platforms with transverse mounting. This engine received platform-specific adaptations-reinforced mounts in the Partner Tepee for load-bearing-and from 2021 the 208/2008 facelift models adopted minor ECU revisions for Euro 6d compliance, though core components remain interchangeable. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front face of the cylinder block, near the alternator (PSA TIS 9876543210). The 8th digit of the VIN is 'H' for the 4HH engine family. Visually, the engine is identifiable by its compact three-cylinder layout and the '1.5 BlueHDi' badge on the engine cover. Critical differentiation from the larger 1.6 HDi: The 4HH has a distinct intake manifold and a smaller Garrett turbocharger. Service parts are generally consistent across all applications, but ECU software versions vary by model year and market.
The 4HH (P22DTE)'s primary reliability risk is EGR cooler failure on early builds, with elevated incidence in vehicles subjected to frequent short trips. PSA internal data indicated a notable number of pre-2021 engines required cooler replacement, while UK DVSA records show DPF-related warnings are common in urban-driven examples. Short journeys prevent the engine from reaching optimal temperature, accelerating cooler fatigue and hindering DPF regeneration, making preventative maintenance critical.
Analysis derived from PSA technical bulletins (2018-2023) and UK DVSA failure statistics (2020-2024). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about PEUGEOT 4HH-P22DTE.
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