2021 IC Bus Cesb recalls and problems
The 2021 IC Bus Cesb has 4 safety recalls and 3 owner complaints filed with NHTSA. Recall repairs are free at any IC Bus dealer.
Recalls may cover only some 2021 IC Bus Cesb vehicles. Check your VIN at NHTSA ↗ to see open recalls for your exact car.
2021 IC Bus Cesb recalls
Recall 25V-580: Structure
Problem: International Motors, LLC (International) is recalling certain 2016-2026 IC Bus CESB and 2016-2021 RESB school buses. The underfloor reinforcement may not have been installed, compromising the structural integrity of the buses. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) numbers 210, "Seat Belt Assembly Anchorages" and 222, "School Bus Passenger Seating and Crash Protection."
Risk: Reduced structural integrity may increase the risk of injury in a crash.
Fix: Dealers will inspect and install a reinforcement channel as necessary, free of charge. Owner notification letters were mailed December 8, 2025. Owners may contact International customer service at 1-800-448-7825. International's number for this recall is 25514.
Recall 25V-503: Service Brakes, Hydraulic
Problem: International Motors, LLC (International) is recalling certain 2016-2024 IC Bus CESB school buses. The brake pressure switch assembly may leak brake fluid into the brake pressure switch's electrical components and cause an electrical short-circuit.
Risk: An electrical short in the brake pressure switch can overheat the circuit and increase the risk of a fire while driving or parked.
Fix: Owners are advised to park outside and away from structures until the recall repair is complete. Dealers will install a silicone black jumper harness, free of charge. Owner notification letters were mailed December 15, 2025. Owners may contact International customer service at 1-800-448-7825. International's number for this recall is 25510. Vehicles previously repaired under 23V398 will need to have the new remedy completed.
Recall 23V-398: Service Brakes, Hydraulic
Problem: Navistar, Inc. (Navistar) is recalling certain 2016 and 2018-2024 IC Bus CE school buses. The brake pressure switch assembly may leak brake fluid into the brake pressure switch's electrical components and cause an electrical short-circuit.
Risk: An electrical short in the brake pressure switch can overheat the circuit and increase the risk of a fire while driving or parked.
Fix: Owners are advised to park outside and away from structures until the recall repair is complete. Dealers will replace the brake pressure switch assembly and if necessary, the wire harness or fuse, free of charge. Owner notification letters were mailed September 29, 2023. Owners may contact Navistar's customer service at 1-800-448-7825. Navistar's number for this recall is 23518.
Recall 21V-837: Engine and Engine Cooling
Problem: Navistar, Inc. (Navistar) is recalling certain 2020-2023 IC CE school buses. The engine control module (ECM) may set a fault code that results in an unexpected engine shut down.
Risk: Unexpected engine shut down can increase the risk of a crash. Additionally, a disabled school bus may require an evacuation procedure in an uncontrolled traffic situation, increasing the risk of injury to passengers.
Fix: Dealers will reprogram the ECM, free of charge. Owner notification letters notifying owners of the safety risk were mailed January 18, 2022. Owners may contact Navistar customer service at 1-800-448-7825. Navistar's number for this recall is 21507.
2021 IC Bus Cesb problems reported by owners
| Problem area | Reports | |
|---|---|---|
| Engine | 2 | |
| Fuel/Propulsion System | 1 | |
| Unknown or Other | 1 |
Problems that are not covered by a recall are paid repairs; labor rates follow local mechanic pay — see what auto mechanics earn in each state.
Recent 2021 IC Bus Cesb complaints
Owner reports filed with NHTSA, as written (personal details removed). Complaints are not verified by NHTSA.
Other IC Bus Cesb years
Frequently asked questions
Does the 2021 IC Bus Cesb have any recalls?
Yes — NHTSA lists 4 recalls for the 2021 IC Bus Cesb: 25V-580 (structure), 25V-503 (service brakes, hydraulic), 23V-398 (service brakes, hydraulic), 21V-837 (engine and engine cooling). Not every vehicle is affected, so check your VIN at nhtsa.gov/recalls.
What is the most common problem with the 2021 IC Bus Cesb?
Owners report engine problems most often (2 reports), followed by fuel/propulsion system (1).
Are IC Bus recall repairs free?
Yes. Safety recall repairs are free at authorized IC Bus dealers, whether you are the first owner or bought the car used.