PSB E322: EMY2024 and EMY2025 CARB MX-13 Software Update Campaign Software Update is now available
Kenworth technical service bulletin E322 - KW for 2025 Kenworth T680 and 2025 Kenworth T880.
- Bulletin number
- E322 - KW (E322 - KW)
- Component
- Electrical system
- Summary
- PSB E322: EMY2024 and EMY2025 CARB MX-13 Software Update Campaign Software Update is now available. Engine software must be updated to NA-110C before releasing chassis to final customers. Certain Vehicle Model Year 2025 T680/T880 chassis equipped with Engine Model Year (EMY) 2024 or 2025 CARB MX-13 engines and NA-100C software may experience a Malfunction Indicator Lamp (MIL) due to a software issue. Without this update, a derate may occur.
Vehicles covered
- Kenworth T680 2025 2025
- Kenworth T880 2025 2025
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