The Honda H22A6 is a 2,259 cc, inline‑four naturally aspirated petrol engine produced between 1997 and 2001. It features a dual overhead camshaft (DOHC) valvetrain and Honda's VTEC system, engineered for high — revving performance in premium compact applications. Peak output is 185 PS (136 kW) at 6,800 rpm and 215 Nm of torque at 5,500 rpm, delivering a thrilling, race — inspired character.
Fitted primarily to the European — market Honda Accord Type R (CH1) and Japanese — ma…
Honda
Production years 1997–2001 meet Euro 2 standards (VCA UK Type Approval #VCA/EMS/HONDA-H22).
The Honda H22A6 is a 2,259 cc inline‑four naturally aspirated petrol engine engineered for high-performance sedans (1997-2001). It combines DOHC architecture with Honda's VTEC system to deliver a high-revving, responsive driving experience. Designed to meet Euro 2 standards, it prioritizes performance while maintaining emissions compliance for its era.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,259 cc | |
Fuel type | Petrol | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Naturally Aspirated | |
Bore × stroke | 87.0 mm × 95.0 mm | |
Power output | 136 kW (185 PS) @ 6,800 rpm | |
Torque | 215 Nm @ 5,500 rpm | |
Fuel system | PGM-FI (Programmed Fuel Injection) | |
Emissions standard | Euro 2 | |
Compression ratio | 10.6:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Belt-driven | |
Oil type | Honda 5W-30 or 10W-40 | |
Dry weight | 152 kg |
The Honda H22A6 was used across Honda's CH/CD platforms with transverse mounting. This engine received platform-specific adaptations-reinforced engine mounts and a lightweight flywheel in the Accord Type R-and featured a unique intake manifold and ECU mapping. All adaptations are documented in OEM technical bulletins.
The H22A6's primary reliability risk is VTEC oil pressure switch failure, with elevated incidence in vehicles with neglected oil changes. Honda SIB 98-073 identifies the switch as a common failure point, while timing belt neglect remains a critical risk for all interference engines. Extended oil intervals and use of incorrect viscosity make VTEC component longevity and timing belt integrity critical.
Analysis derived from Honda technical bulletins (1997-2001) and UK DVSA failure statistics (2015-2023). 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 H22A6 is generally reliable with proper maintenance. Its main concerns are VTEC oil pressure switch failure and the critical timing belt. With regular oil changes using the correct specification and timely belt replacement, these engines can easily surpass 200,000 km. Neglecting maintenance is the primary cause of major failures.
The most common issues are VTEC oil pressure switch failure (causing P1259 code), timing belt wear leading to potential engine destruction, distributor bearing wear causing oil leaks and misfires, and cracked exhaust manifolds producing a ticking noise.
The H22A6 was used in the sixth-generation Honda Accord Type R (chassis code CH1) for the European market and the Accord SiR-T (chassis code CD6) for the Japanese market from 1997 to 2001.
Yes, the H22A6 is highly tunable. Basic modifications like an induction kit and exhaust can yield gains. More significant power increases come from ECU remapping, performance cams, and head work. Its robust DOHC VTEC design and high compression ratio make it a favorite for performance enthusiasts.
Fuel economy is moderate for a performance engine. Expect around 10.0 L/100km (28 mpg UK) in mixed driving for a manual transmission model. Careful highway driving can see figures closer to 8.0 L/100km (35 mpg UK), while aggressive driving will be higher.
Yes. The H22A6 is an interference engine. This means if the timing belt breaks or jumps teeth, the pistons will collide with the open valves, causing severe and expensive internal engine damage. This makes adhering to the timing belt replacement schedule absolutely critical.
Honda recommends 5W-30 or 10W-40 engine oil meeting their specifications. Using a high-quality synthetic or semi-synthetic oil is highly recommended, especially for the DOHC VTEC valvetrain. Oil should be changed every 10,000 km or 6 months to ensure the engine operates reliably.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
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