If you receive a customer concern about the CHECK ENGINE light coming on and DTC P3400 (cylinder...
Mazda technical service bulletin SA-047-21 for 2019-2021 Mazda MAZDA3, 2018-2021 Mazda CX-5 and 2018-2021 Mazda MAZDA6 and others.
- Bulletin number
- SA-047-21
- Component
- Engine and engine cooling
- Summary
- If you receive a customer concern about the CHECK ENGINE light coming on and DTC P3400 (cylinder deactivation system malfunction) stored, the cylinder deactivation oil control valve may be plugged with plastic debris from the oil filter wrapper. The debris may enter the center of the oil filter when poking a hole in the filter wrapper during removal, and then travel through the engine and plug the cylinder deactivation oil control valve.
Owners of these vehicles have filed 568 complaints in the engine category.
Vehicles covered
- Mazda MAZDA3 2019-2021 201920202021
- Mazda CX-5 2018-2021 2018201920202021
- Mazda MAZDA6 2018-2021 2018201920202021
- Mazda CX-30 2020-2021 20202021
- Mazda CX-3 2016-2021 201620172018201920202021
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