This bulletin applies to 2018-2021 Mazda CX-5, 2020-2021 CX-30, 2019-2021 Mazda3 and 2018-2021 Mazda6 vehicles, equipped with cylinder deactivation.
Some vehicles may have the check engine light on with DTC P0524:00 (engine oil pressure too low) or P055F:00 (engine oil pressure malfunction) 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 with a new one according to MGSS online. Replace the engine oil and filter. Reprogram the PCM using IDS 128.06 or later.
OIL CONTROL VALVE APPLICATION
PYFA-14-440C..........................CX-5, Mazda6/Mazda3 (Japan built)
P5PW-14-440...........................CX-30 and Mazda3 (Mexico built)
PY8W-14-365............................gasket
PY8W-14-275.............................bolt
1WPE-14-302.............................oil filter cartridge
