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January 31, 2026 Service bulletin

Check engine light ON with DTC P20F8:00 stored

Mazda technical service bulletin 01-003-26 for 2023-2025 Mazda MAZDA3, 2024-2025 Mazda CX-5 and 2024-2025 Mazda CX-30 and others.

Bulletin number
01-003-26
Component
Engine
Summary
Some vehicles may exhibit a check engine light ON with DTC P20F8:00 stored. P20F8:00 - Swirl control circuit range/performance problem. • The DTC is caused by overheating of the Swirl Control Valve (SCV) motor which leads to duty limitation, causing poor opening􀀀angle response and resulting in stuck judgment. To eliminate this concern, the PCM control software has been modified.

Owners of these vehicles have filed 24 complaints in the engine category.

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