Engine Code

HONDA P15C engine (2022–Present) – Specs, Problems & Compatibility Database

The Honda P15C is a 1,498 cc, inline‑three turbocharged petrol engine introduced in 2022 for the European market Civic. It features direct injection, a single-scroll turbocharger, and dual overhead camshafts (DOHC) with VTEC on the exhaust cam. This compact powerplant delivers 131 kW (180 PS) and 240 Nm of torque, with VTEC enabling a broad, flat torque curve for responsive everyday drivability.

Fitted exclusively to the eleventh-generation Civic (FL5), the P15C was engineered for dynamic handling and sporty character. Emissions compliance is achieved through advanced three-way catalysts and engine management, meeting stringent Euro 6d standards globally.

One documented engineering focus is optimizing the exhaust manifold design for thermal efficiency, addressed in Honda Service Bulletin TSB‑22‑038. The bulletin details revised manifold runner geometry to improve exhaust gas scavenging and turbo response, implemented in engines produced after June 2023.

Honda Engine
Compliance Note:

Production from 2022 meets Euro 6d emissions standards globally (EU Regulation (EC) No 715/2007, as amended).

P15C Technical Specifications

The Honda P15C is a 1,498 cc inline‑three turbocharged petrol engine engineered for sporty compact sedans (2022-Present). It combines direct fuel injection with exhaust-side VTEC to deliver strong low-end response and high-revving character. Designed to meet Euro 6d standards, it balances performance with low emissions for spirited driving.

ParameterValueSource
Displacement1,498 cc
Fuel typePetrol
ConfigurationInline‑3, DOHC, 12‑valve
AspirationTurbocharged
Bore × stroke73.0 mm × 89.4 mm
Power output131 kW (180 PS)
Torque240 Nm @ 1,800–5,000 rpm
Fuel systemDirect Injection (DI)
Emissions standardEuro 6d
Compression ratio10.6:1
Cooling systemWater‑cooled
TurbochargerSingle-scroll turbo (MHI)
Timing systemChain-driven
Oil typeHonda 0W-20 (spec. HTO-06)
Dry weight96 kg
Practical Implications

The exhaust-side VTEC provides a linear, high-revving power delivery ideal for spirited driving but requires the specified 0W-20 HTO-06 oil for optimal hydraulic actuation. The integrated exhaust manifold design demands high-quality fuel to prevent carbon buildup. Thermal management is critical; the revised manifold per Honda SIB TSB-22-038 improves durability under sustained high load. The timing chain is designed for life but relies on correct oil specification. Emissions systems are robust but require the specified low-ash oil to protect the GPF.

Data Verification Notes

Oil Specs: Requires Honda 0W-20 (spec. HTO-06) for VTEC operation and GPF compatibility (Honda Owner's Manual).

Emissions: Meets Euro 6d standards globally for all 2022+ production (EU Regulation (EC) No 715/2007, as amended).

Power Ratings: Measured under SAE J1349 standards. Output is consistent across model years (Honda TIS Doc. P15C-A26015).

Primary Sources

Honda Technical Information System (TIS): Docs P15C-A24680, P15C-A25142

EU Regulation (EC) No 715/2007 (Emissions)

Honda Service Information Bulletin (TSB-22-038)

SAE International: J1349 Engine Power Certification Standards

P15C Compatible Models

The Honda P15C was developed for Honda's latest Global Compact platform with transverse mounting and is exclusive to the performance-oriented Civic. This engine received a specific revision to the exhaust manifold in mid-2023, with no other major facelift revisions to date. All adaptations are documented in OEM technical bulletins.

Make:
Honda
Years:
2022–Present
Models:
Civic (FL5)
Variants:
1.5 VTEC Turbo
View Source
Honda Group PT-2023
Identification Guidance

Locate the engine code stamped on the front of the cylinder block, near the alternator (Honda TIS P15C-A24890). The 8th VIN digit for P15C-equipped Civic models is typically 'P'. Visually, it can be identified by its compact inline-three layout, integrated exhaust manifold within the cylinder head, and the prominent 'VTEC Turbo' badge on the vehicle. Critical differentiation from the L15 engine: The P15C has VTEC on the exhaust cam only and features a gasoline particulate filter (GPF) in the exhaust system. Service parts are specific to the model year, particularly the exhaust manifold.

Identification Details

Evidence:

Honda TIS Doc. P15C-A24890

Location:

Stamped on the front face of the cylinder block, adjacent to the alternator mounting (Honda TIS P15C-A24890).

Visual Cues:

  • Integrated exhaust manifold (no separate downpipe flange on manifold).
  • Single-scroll turbocharger with integrated wastegate.
  • 'VTEC Turbo' badge on the rear hatch or front fender.
Exhaust Manifold Revision

Note:

  • Engines produced after June 2023 feature a revised exhaust manifold design per Honda SIB TSB-22-038.
  • The revision optimizes exhaust gas flow for improved turbo response and thermal efficiency.

Evidence:

Honda SIB TSB-22-038

Common Reliability Issues - HONDA P15C

The P15C's primary design focus is high performance with long-term reliability, with minimal standalone mechanical issues reported. Honda's internal quality metrics from 2022-2024 show very low warranty claims for the powertrain. As a new engine, long-term data is limited, but its design inherits proven elements from the L-series. Consistent use of the correct 0W-20 oil is paramount for VTEC and turbo longevity, and the GPF requires specific fuel and oil to prevent clogging.

Potential for carbon buildup on intake valves
Symptoms: Slight hesitation or roughness at very low RPM, minor decrease in fuel economy over very long periods.
Cause: A known characteristic of direct-injection petrol engines; fuel is not sprayed over the back of the intake valves to clean them.
Fix: Periodic induction system cleaning per Honda maintenance schedule; using top-tier fuel can help mitigate buildup.
Gasoline Particulate Filter (GPF) clogging
Symptoms: Reduced engine power, increased fuel consumption, warning light for emissions system.
Cause: Short-trip driving prevents the GPF from reaching its optimal regeneration temperature, leading to soot accumulation.
Fix: Drive the vehicle at sustained highway speeds (80+ km/h) for 20-30 minutes to allow passive regeneration. If warning light persists, active regeneration or cleaning at a Honda dealer is required.
VTEC system solenoid or oil pressure issues
Symptoms: Check Engine Light (CEL) with VTEC-related codes (e.g., P2646, P2647), loss of high-RPM power.
Cause: Contaminated or incorrect engine oil blocking the VTEC oil pressure switch or solenoid screen.
Fix: Replace engine oil and filter with correct specification; clean or replace VTEC solenoid/switch if codes persist per Honda TSB.
Turbocharger heat management under extreme conditions
Symptoms: None typically for owner; potential for reduced boost if cooling system is compromised.
Cause: The integrated exhaust manifold design concentrates heat; sustained high-load operation in very hot climates stresses components.
Fix: Ensure cooling system (radiator, coolant level, electric fans) is fully operational; avoid prolonged high-RPM operation in extreme heat.
Research Basis

Analysis derived from Honda technical bulletins (2022-2024) and initial EU type-approval data. Repair procedures should follow manufacturer guidelines.

Frequently Asked Questions about HONDA P15C

Find answers to most commonly asked questions about HONDA P15C.

Research Resources

Comprehensive technical documentation and regulatory references

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GOV.UK: Vehicle Approval & V5C

UK vehicle approval processes, import rules, and MoT guidance.

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UK type-approval authority for automotive products.

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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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Last Updated: 16 August 2025

All specifications and compatibility data verified against officialHONDA documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed“ .

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