Some customers may experience a lack of power with no warning lights illuminated and no related DTCs stored
Mazda technical service bulletin 01-003-18-3421 for 2016-2018 Mazda CX-9.
- Bulletin number
- 01-003-18-3421
- Component
- Fuel system, gasoline
- Summary
- Some customers may experience a lack of power with no warning lights illuminated and no related DTCs stored. This concern most likely occurs when the fuel temperature is high and during situations where high power is required. This concern may be caused when the learning value for the low pressure fuel pump exceeds a certain level and the PCM limits engine power to avoid a lack of fuel injection. Even if the low pressure fuel pump has a problem, no DTCs are stored. To eliminate this concern, the PCM control logic has been modified not to limit engine power. After this modification, DTCs P0192:00 or P0087:00 are stored when the fuel injection amount is insufficient. P0192:00 - High fuel pressure sensor circuit low input P0087:00 - High fuel pressure sensor circuit range/performance problem.
Vehicles covered
- Mazda CX-9 2016-2018 201620172018
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