Possible cause

WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.

Connector terminal disconnection, poor contact, damage, deformation, corrosion
Open circuit in wiring harness between connector C-38 and connector C-02
Open circuit in wiring harness between connector C-02 and connectors C-37, C-36 (with connectors C-37, C-36)
Open circuit in wiring harness between connector C-02 and branch B (without connectors C-37, C-36)
Connector C-38 malfunction
Connector C-02 malfunction
Connectors C-37, C-36 malfunction (with connectors C-37, C-36)