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May 20, 2019 Service bulletin

If you receive a customer concern with the check engine light coming on and DTC P3400 (cylinder...

Mazda technical service bulletin SA-015-19a for 2019 Mazda MAZDA3, 2018-2019 Mazda CX-5 and 2018 Mazda MAZDA6.

Bulletin number
SA-015-19a
Component
Power train
Summary
If you receive a customer concern with the check engine light coming on and DTC P3400 (cylinder deactivation system malfunction) stored, perform the inspection in the Repair Procedure.

Owners of these vehicles have filed 94 complaints in the transmission category.

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