Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 0 of 1 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
Engine. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
0 crash reports0 fire reports0 injury reports
What owners actually said
1 reports
Mileage unknown · Aug 10, 2021
Engine
DEF "Head" sensor failure resulting in power reduction to 5%. Due to faulty def head sensors the vehicle will experience power loss dropping to 5% load. These sensors do nothing but measure DEF fluid level and temperature in it's tank. DEF continues to be supplied to the exhaust meeting all EPA regulations in place at this ti…
Read full complaint
DEF "Head" sensor failure resulting in power reduction to 5%. Due to faulty def head sensors the vehicle will experience power loss dropping to 5% load. These sensors do nothing but measure DEF fluid level and temperature in it's tank. DEF continues to be supplied to the exhaust meeting all EPA regulations in place at this time, BUT the Engine ECU will shut you down leaving you stranded. Problems with micro chip shortages have left many stranded with nothing in place to help them get "home".. We are talking weeks to Months in some cases only to have the def head finally replaced only to fail again with in a couple thousand miles. Emissions are not effected, but "Shaw Development" (DEF Head manufacturer ) Nor Cummins (engine manufacturer) has not done anything to prompt the EPA to allow a work around for this problem. Emergency Response vehicles do have programing in their ECU which allow them to operate normally until new parts are available. Why not for the thousands of Motor Home owners as well as over the road trucks which are effected as well. It's not a question of if this will happen, it's a question of when this will happen.
Tiffin Motorhomes, Inc. (Tiffin) is recalling certain 2017-2021 Bus and Phaeton vehicles. The sealing washer may not seat correctly in the pilot bore, allowing the high pressure fuel rail assembly to leak.
Consequence & remedy
Consequence: A fuel leak in the presence of an ignition source increases the risk of a fire.
Remedy: Tiffin will work with Cummins to inspect the rail threads , and replace the rail and fuel lines if damage is found, free of charge. Owner notification letters were mailed August 11, 2021. Owners may contact Tiffin customer service at 1-256-356-8661.
Tiffin Motorhomes, Inc. (Tiffin) is recalling certain 2020 Bus and Phaeton motorhomes. The steering pinch bolts may not have been properly tightened.
Consequence & remedy
Consequence: A loose steering pinch bolt can result in a loss of steering control, increasing the risk of a crash.
Remedy: Tiffin will notify owners, and dealers will tighten the steering bolts to specification, free of charge. The recall began August 27, 2020. Owners may contact Tiffin customer service at 1-256-356-8661.
Tiffin Motorhomes, Inc. (Tiffin) is recalling certain 2019-2020 Tiffin Bus and 2018-2020 Zephyr motorhomes. The windshield wipers may not work due to the control module being improperly wired.
Consequence & remedy
Consequence: The wipers may stop working during inclement weather, causing limited visibility, increasing the risk of a crash.
Remedy: Tiffin will notify owners, and dealers will inspect the control module, correcting the wiring as needed, free of charge. The recall began August 13, 2020. Owners may contact Tiffin customer service at 1-256-356-8661.
Additional source detail variants (2)
Visibility/wiper
Tiffin Motorhomes, Inc. (Tiffin) is recalling certain 2019-2020 Tiffin Bus and 2018-2020 Zephyr motorhomes. The windshield wipers may not work due to the control module being improperly wired.
Consequence: The wipers may stop working during inclement weather, causing limited visibility, increasing the risk of a crash.
Remedy: Tiffin will notify owners, and dealers will inspect the control module, correcting the wiring as needed, free of charge. The recall began August 13, 2020. Owners may contact Tiffin customer service at 1-256-356-8661.
Visibility:windshield Wiper/washer:switch/wiring
Tiffin Motorhomes, Inc. (Tiffin) is recalling certain 2019-2020 Tiffin Bus and 2018-2020 Zephyr motorhomes. The windshield wipers may not work due to the control module being improperly wired.
Consequence: The wipers may stop working during inclement weather, causing limited visibility, increasing the risk of a crash.
Remedy: Tiffin will notify owners, and dealers will inspect the control module, correcting the wiring as needed, free of charge. The recall began August 13, 2020. Owners may contact Tiffin customer service at 1-256-356-8661.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0
No exact-year investigations in this snapshot.
2020 Tiffin Bus Problems, Complaints & Recalls | Skip That Year
Illustration