Faulty DEF sensors that due to shortage were not replaced
Tiffin technical service bulletin CSA-036 for 2017-2023 Tiffin Phaeton, 2016-2021 Tiffin Allegro Bus and 2020-2022 Tiffin Allegro Breeze and others.
- Bulletin number
- CSA-036
- Component
- Engine and engine cooling
- Summary
- Faulty DEF sensors that due to shortage were not replaced. Instead engine software was temporarily modified to account for continued operation with a faulty sensor until replacement sensors were available. This campaign will install an engine control module calibration as well as confirm and/or install a new DEF header.
Owners of these vehicles have filed 3 complaints in the engine category.
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