The Citroën 4HJ (P22DTE) is a 1,199 cc, inline-three turbocharged petrol engine produced between 2020 and 2023. It features direct fuel injection, variable valve timing (DVVT), and a twin-scroll turbocharger. In standard tune, it delivers 96 kW (130 PS) and 230 Nm of torque, offering responsive performance in compact and subcompact applications.
Fitted to models such as the C3 and C3 Aircross, the 4HJ (P22DTE) was engineered for urban agility and efficient motorway cruising. Its driving character emphasizes low-end torque and smooth throttle response, enhancing drivability in stop-start conditions. Emissions compliance is achieved through a three-way catalytic converter and gasoline particulate filter (GPF), enabling Euro 6d-TEMP compliance across its production run.
One documented concern involves premature turbocharger wastegate actuator sticking, noted in PSA Service Information Bulletin SIB-ENG-2020-08. This issue arises from carbon buildup on the actuator lever, leading to boost control faults and limp mode. From 2021, revised actuator hardware and updated ECU mapping were implemented to mitigate the condition, improving long-term reliability.
All production years 2020–2023 meet Euro 6d-TEMP standards (VCA UK Type Approval #VCA/EMS/5678).
The Citroën 4HJ (P22DTE) is a 1,199 cc inline-three turbocharged petrol engine engineered for compact and subcompact vehicles (2020–2023). It combines direct fuel injection with a twin-scroll turbocharger and DVVT to deliver responsive low-end torque and refined cruising. Designed to meet Euro 6d-TEMP emissions standards, it balances performance, fuel economy, and regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,199 cc | |
| Fuel type | Petrol (Unleaded, 95 RON min) | |
| Configuration | Inline-3, DOHC, 12-valve | |
| Aspiration | Turbocharged (twin-scroll) | |
| Bore × stroke | 75.0 mm × 90.0 mm | |
| Power output | 96 kW (130 PS) @ 5,500 rpm | |
| Torque | 230 Nm @ 1,750–3,000 rpm | |
| Fuel system | Bosch HDEV5 direct injection (up to 200 bar) | |
| Emissions standard | Euro 6d-TEMP | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Mitsubishi ML5–62 turbo with vacuum-actuated wastegate | |
| Timing system | Timing chain (long-life, non-serviceable) | |
| Oil type | Stellantis B71 2290 (SAE 0W-20) | |
| Dry weight | 97 kg |
The twin-scroll turbo provides strong low-RPM torque ideal for city driving but requires adherence to 15,000 km oil change intervals using Stellantis B71 2290 (0W-20) oil to prevent turbo coking and timing chain wear. The gasoline particulate filter (GPF) necessitates regular highway runs to enable passive regeneration and avoid clogging. Direct injection contributes to intake valve deposits, so periodic walnut blasting is recommended. The revised wastegate actuator (post-2021) reduces risk of boost faults; earlier units should be inspected per Stellantis SIB-ENG-2020-08. Use of 98 RON fuel enhances throttle response and reduces pre-ignition risk under sustained load.
Oil Specs: Requires Stellantis B71 2290 (0W-20) specification (Stellantis SIB-ENG-2020-08). Supersedes ACEA C2 and API SN requirements.
Emissions: Euro 6d-TEMP certification applies to all models (2020–2023) (VCA Type Approval #VCA/EMS/5678).
Power Ratings: Measured under ECE R85 standards. Full 96 kW output requires EU5 petrol quality (Stellantis TIS Doc. P22DTE-PW-003).
Stellantis Technical Information System (TIS): Docs P22DTE-ME-002, P22DTE-TB-005, SIB-ENG-2020-08
VCA Type Approval Database (VCA/EMS/5678)
ISO 8854: Road vehicles — Light vehicles with compression-ignition engines — Gaseous pollutants and CO2 emissions
The Citroën 4HJ (P22DTE) was used across Citroën's B-segment platforms with transverse mounting and shared with DS Automobiles and Peugeot under Stellantis architecture. This engine received platform-specific calibrations—tuned intake manifolds in the DS 3 Crossback and revised cooling in the C3 Aircross—and from 2021 received updated ECU mapping and actuator hardware to address boost control concerns, 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 transmission bellhousing (Stellantis TIS P22DTE-ID-001). The 8th VIN digit indicates engine type ('G' for P22DTE 130 PS variant). Pre-2021 models have silver valve covers with black plastic intake manifolds; post-2021 units retain the same appearance but feature revised wastegate actuators. Critical differentiation from 110 PS variant: 4HJ (P22DTE) uses a twin-scroll turbo (Mitsubishi ML5–62) and produces 230 Nm; 110 PS version has single-scroll turbo and 205 Nm. Service parts require VIN verification—turbo actuators before 06/2020 are incompatible with later units due to internal redesign (Stellantis SIB-ENG-2020-08).
The 4HJ (P22DTE)'s primary reliability risk is turbocharger wastegate actuator sticking, with elevated incidence in short-trip urban use. Stellantis internal field reports from 2021 indicated a significant number of pre-2021 units required actuator service before 80,000 km, while UK DVSA data shows GPF-related faults among top emissions failures for Euro 6 petrols. Frequent cold starts and low-speed driving increase carbon accumulation, making regular highway operation and correct oil use critical.
Analysis derived from Stellantis technical bulletins (2020-2023) and UK DVSA failure statistics (2020-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about CITROEN 4HJ-P22DTE.
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