Check engine light turns on with DTC P0504:00 [PCM] (Brake switch circuit problem) stored in memory
Mazda technical service bulletin 01-001-24a for 2024 Mazda CX-90.
- Bulletin number
- 01-001-24a
- Component
- Service brakes, hydraulic
- Summary
- Some vehicles may exhibit check engine light turns on with DTC P0504:00 [PCM] (Brake switch circuit problem) stored in memory. This may be caused by the PCM incorrectly reading the brake switch input. To eliminate this concern, the control software of the PCM has been modified.
Owners of these vehicles have filed 16 complaints in the brakes category.
Vehicles covered
- Mazda CX-90 2024 2024
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