Technical Service Bulletin CSA-036 — 2019 TIFFIN ZEPHYR
ENGINE AND ENGINE COOLING
Bulletin Details
| TSB ID | CSA-036 |
| Manufacturer | |
| Vehicle | 2019 TIFFIN ZEPHYR |
| Component | ENGINE AND ENGINE COOLING |
| Communication Date |
Bulletin 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.
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.