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Reducing contamination in Mazda engine oil

June 4, 2024

Some 2018-2020 Mazda CX-5, Mazda6 and Mazda3 vehicles may have the check engine light on with DTC P0524:00 or P055F:00 stored in memory.

Motor Age Staff

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Mitchell 1

Some 2018-2020 Mazda CX-5, Mazda6 and Mazda3 vehicles may have the check engine light on with DTC P0524:00 or P055F:00 stored in memory.

Contamination in the engine oil may cause the engine oil solenoid valve to become stuck, resulting in improper operation of the oil pump and improper oil pressure. The control software of the PCM has been modified to eliminate this concern.

In addition, the production process has been modified to reduce contamination in the engine oil solenoid valve, oil pump, spacer and oil filter.

Replace the engine oil solenoid valve, engine oil and oil filter.

Reprogram the PCM with Mazda Modular Diagnostic System (M-MDS) according to 2018-2020 CX-5 and Mazda6: IDS PCM Reprogramming Procedure using IDS 128.06 or later.

About the Author

Motor Age Staff

Motor Age has been publishing technical content for professional automotive technicians since 1899. Our writers have decades of experience and scores of ASE certifications, and they continue to teach new generations of technicians via classrooms all around the globe, as well as through the books and training manuals they've authored.