Cbr
Mack technical service bulletin CBR 2491-1 082025 for 2025-2026 Mack Pioneer PR (4).
- Bulletin number
- CBR 2491-1 082025
- Component
- Electrical system
- Summary
- CBR - The purpose of this CBR is to provide instructions when fault code U300056: Electronic Control Unit, Invalid/Incompatible Configuration for the RCIOM is active.
Vehicles covered
- Mack Pioneer PR (4) 2025-2026 20252026
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