2021 Thor Motor Coach Omni problems: recalls, complaints and what to check
NHTSA has 2 recalls and 2 owner complaints on file for the 2021 Thor Motor Coach Omni. Here is what they are, what a technician checks for each kind of fault, and how to look one over before you buy it.
LP gas and gas appliances: 2 recalls
Recall 21V754000 (28/09/2021): EQUIPMENT:RECREATIONAL VEHICLE/TRAILER:LPG SYSTEMS:LINES AND FITTINGS
Thor Motor Coach (TMC) is recalling 2021-2022 Magnitude and Omni motorhomes. The LP gas line may have been incorrectly routed through the rear suspension leaf springs, which could damage the line and cause a gas leak.
Fix: Dealers will re-route the LP line as necessary, free of charge. Owner notification letters were mailed November 23, 2021. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000242.
Recall 22V094000 (18/02/2022): EQUIPMENT:RECREATIONAL VEHICLE/TRAILER:LPG SYSTEMS:LINES AND FITTINGS
Thor Motor Coach (TMC) is recalling certain 2020-2021 Omni and Magnitude motorhomes. The LP gas line may have been incorrectly routed through the rear suspension leaf springs, which could damage the line and cause a gas leak.
Fix: Dealers will re-route the LP line as needed, free of charge. Owner notification letters were mailed March 24, 2022. Owners may contact TMC customer service at 1-877-798-855-2867. TMC's number for this recall is RC000256. This recall is an expansion of NHTSA recall 21V-754.
What a tech checks: Regulator, lines and fittings, then the appliances: furnace, water heater, range. A proper pressure-drop leak test is the first thing a tech does on an LP complaint. Before you buy: Smell for gas with the tank open; have a shop do the leak test.
LP and furnace lessons · Furnace guide · Furnace 3D lab · Water heater 3D lab
Structure, roof and leaks: 2 complaints
What a tech checks: Roof sealant, seams, window and slide seals, and the frame. Water intrusion shows up as delamination, soft floors and stained ceilings months after the leak started. Before you buy: Press the sidewalls and walk the floor; look at every seam and seal.
Roof, leaks and body lessons · Seals and leaks guide
Axles, brakes, suspension and hitch: 1 complaint
What a tech checks: Bearings, brake magnets, worn shackle bolts and bent axles. A trailer that wears tires on the inside edge or pulls to one side usually has an axle or suspension problem. Before you buy: Bolts tight, springs not flat, brakes apply with the breakaway pin pulled.
Chassis and towing lessons · Trailer guide
12 volt and 120 volt electrical: 1 complaint
What a tech checks: Voltage drop, grounds, the converter and the transfer switch. Melted shore-cord plugs and bad grounds cause most of the electrical complaints techs actually see. Before you buy: Battery at rest, converter output on shore power, GFCI test, every outlet.
12 V electrical lessons · 120 V and generator lessons · Wiring diagrams
Other: 1 complaint
What owners reported to NHTSA
12/26/2021, SUSPENSION,ELECTRICAL SYSTEM,STRUCTURE: The front cap above the drivers and passenger compartment come loose from the body. Mine has been to a few dealers and back to Thor's plant. They supposedly fixed it at Thor. But it is coming apart again. After Thor's head management came out and looked at it this last time they told me their is no internal support for the hole front cap. It's held on by self tapping screws where it meets the body of the camper and a
12/14/2021, STRUCTURE,EQUIPMENT: We read on the Thor motor coach forum that there is an open recall on Omnis and Magnitudes built after 9/1/2020 for damage to LP gas line caused by the way it was routed near the springs. Our manufacture date is prior to this date, but my husband crawled under our unit just to have a look. Fortunately he did because we have a pretty severely damaged line! Thor has agreed to fix it, but has not altered their recall
Looking at a 2021 Thor Motor Coach Omni?
The Buyer's Check walks you through it on your phone: what to ask, the outside walk-around, water damage, every system on every power source, with the recalls above built in. You get a report that says what's a walk-away and what to negotiate on.
Checked against NHTSA 2026-10-23. Recall repairs are free at an authorized dealer. Complaints are owner reports to NHTSA and are not verified.