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July 18, 2026 Service bulletin

Description

Mazda technical service bulletin 30-003-26 for 2024-2026 Mazda CX-90 and 2025-2026 Mazda CX-70.

Bulletin number
30-003-26
Component
Electrical system
Summary
DESCRIPTION Some vehicles may experience the warning message "A 'Hybrid System Malfunction. Have the Vehicle Inspected' and DTC P2BC5:00 (OBC contactor (+) stuck ON) and/or other DTCs listed below may be stored. If this condition is present, follow the Repair Procedure below to replace the Junction Box No.2. P2BC5:00: OBC Contactor (+) system: Stuck On P2BC6:00: OBC Contactor (+) system: Stuck Off P2BCC:00: OBC Contactor (-) system: Stuck On This is caused by an issue with the contact welding of the OBC contactor contacts. REPAIR PROCEDURE 1. Verify the customer concern. 2. Replace Junction Box 2 (+) according to the following procedure.

Owners of these vehicles have filed 58 complaints in the electrical category.

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