Every 2021 Ic Bus Cesb recall
Each campaign as NHTSA published it: what is wrong, what can happen, and the fix. Newest first.
Structure · NHTSA 25V580000
Sep 4, 2025Structure:Body
- 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.
Full recall details for 25V580000 →Service Brakes, Hydraulic · NHTSA 25V503000
Jun 8, 2025Service Brakes, Hydraulic:FluidPark outside
- 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.
Full recall details for 25V503000 →Service Brakes, Hydraulic · NHTSA 23V398000
Feb 6, 2023Service Brakes, Hydraulic:FluidPark outside
- 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.
Full recall details for 23V398000 →Engine and Engine Cooling · NHTSA 21V837000
Oct 25, 2021Engine and Engine Cooling:Engine:Engine Control Module (Ecu/Ecm)
- 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.
Full recall details for 21V837000 →
2021 Ic Bus Cesb complaints and service bulletins
Owners filed 3 complaints with NHTSA about the 2021 Ic Bus Cesb. Ic Bus has issued at least 73 technical service bulletins (repair instructions to dealers) for this model year. Complaints are unverified owner reports; a recall is the manufacturer’s admission of a safety defect.
Most-reported components
- Engine2
- Fuel/Propulsion System1
- Unknown Or Other1
Service bulletins by component
- Electrical System (20)
- Engine and Engine Cooling (20)
- Engine (8)
- Unknown Or Other (8)
- Power Train (7)
- Structure (4)
Read Ic Bus Cesb owner complaints and bulletins, every year
What people reported
Owners have filed 3 complaints with NHTSA about the 2021 Ic Bus Cesb. A few in their own words, shortened. Complaints are unverified and are not proof of a defect or of any recall.
“Exhaust leaks caused by calapsed exhaust manifold pipes on 34 IC units with PSI engines. they are wrapped with aluminium covering with insulation. This in turn makes high heat tempuraters that split and burn up and disfigure pipes. Which can cause a fire if any oil leakage or fuel occurs.”
2021 IC BUS CESBJun 10, 2026 · NY
Complaint filed with NHTSA, not verified by the agency · NHTSA complaint 11743266
“THis is a school bus- Exhaust downpipes leading into the catalytic converters melted down and created large holes in the exhaust pipe itself. Extreme heat developed by engine.”
2021 IC BUS CESBOct 23, 2025
Complaint filed with NHTSA, not verified by the agency · NHTSA complaint 11695245
“School buses. We have a fleet of these and the condition is happening repeatedly and to almost every bus with this PSI brand 8.8L gasoline engine. The engine exhaust downpipes melt from excessive heat and/or fuel. The pipes then crack and produce an exhaust leak near the body firewall.”
2021 IC BUS CESBApr 7, 2025
Complaint filed with NHTSA, not verified by the agency · NHTSA complaint 11653212
Check your Cesb by VIN
Not every 2021 Ic Bus Cesb is in every recall. Enter your 17-character VIN to see the recalls on record for your exact vehicle, then confirm which are still open at NHTSA.gov or with any Ic Bus dealer.
Run a free VIN recall check →