2021 IC Bus Cesb: recalls and complaints

NHTSA advisory: park outsideCampaign 25V503000. NHTSA received the report on 6 Aug 2025. 16,553 units. Service Brakes, Hydraulic / Fluid

Remedy of campaign 25V503000, in the NHTSA record

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.

NHTSA advisory: park outsideCampaign 23V398000. NHTSA received the report on 2 Jun 2023. 15,398 units. Service Brakes, Hydraulic / Fluid

Remedy of campaign 23V398000, in the NHTSA record

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.

Park-outside advisory: A mark on a recall campaign in the NHTSA recall file. This site shows the mark as NHTSA sets it.

NHTSA lists 4 recall campaigns for the 2021 IC Bus Cesb. The newest campaign is 25V580000. NHTSA received the report on 4 Sep 2025. The NHTSA record gives the component Structure / Body. NHTSA has no complaint on file for this model year.

This page cannot show if a recall applies to one vehicle. The NHTSA VIN lookup shows the unrepaired recalls of one vehicle.

Remedy of the newest campaign, 25V580000, in the NHTSA record

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.

NHTSA VIN lookup

Complaint information entered into NHTSA’s Office of Defects Investigation vehicle owner's complaint database is used with other data sources to identify safety issues that warrant investigation and to determine if a safety-related defect trend exists.
NHTSA publishes these words. Source: NHTSA Datasets and APIs, section Complaints, read on 1 Oct 2026. Complaint file through 15 May 2019. Recall file through 29 Sep 2026.

Since the last update

No tracked figure of this page changed in a data update. What the log tracks

All updates to the register

Recall campaigns

4 campaigns, newest first. 39,730 units in total.

25V5800004 Sep 2025Structure / Body
25V5030006 Aug 2025Service Brakes, Hydraulic / FluidAdvisory
23V3980002 Jun 2023Service Brakes, Hydraulic / FluidAdvisory
21V83700025 Oct 2021Engine and Engine Cooling / Engine / Engine Control Module (Ecu/Ecm)

25V580000Received 4 Sep 2025. 457 units.
Structure / Body
Defect, in the NHTSA record
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."
Consequence, in the NHTSA record
Reduced structural integrity may increase the risk of injury in a crash.
Remedy, in the NHTSA record
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.
Report filed by International Motors, LLC. Manufacturer campaign number 25514. Owner notification date in the NHTSA record: 8 Dec 2025.
25V503000Received 6 Aug 2025. 16,553 units.
Service Brakes, Hydraulic / FluidPark-outside advisory
Defect, in the NHTSA record
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.
Consequence, in the NHTSA record
An electrical short in the brake pressure switch can overheat the circuit and increase the risk of a fire while driving or parked.
Remedy, in the NHTSA record
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.
Report filed by International Motors, LLC. Manufacturer campaign number 25510. Owner notification date in the NHTSA record: 15 Dec 2025.
23V398000Received 2 Jun 2023. 15,398 units.
Service Brakes, Hydraulic / FluidPark-outside advisory
Defect, in the NHTSA record
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.
Consequence, in the NHTSA record
An electrical short in the brake pressure switch can overheat the circuit and increase the risk of a fire while driving or parked.
Remedy, in the NHTSA record
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.
Report filed by Navistar, Inc.. Manufacturer campaign number 23518. Owner notification date in the NHTSA record: 29 Sep 2023.
21V837000Received 25 Oct 2021. 7,322 units.
Engine and Engine Cooling / Engine / Engine Control Module (Ecu/Ecm)
Defect, in the NHTSA record
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.
Consequence, in the NHTSA record
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.
Remedy, in the NHTSA record
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.
Report filed by Navistar, Inc.. Manufacturer campaign number 21507. Owner notification date in the NHTSA record: 18 Jan 2022.

The campaign number opens the NHTSA record. Each quotation is the text of the NHTSA recall file.

Recall campaign: One recall in the NHTSA recall file, with one campaign number. A campaign can name many makes, models and model years.

Units: The number of vehicles or products that a recall can include. The manufacturer or the firm reports the number to the agency.

Complaints by component

The NHTSA complaint file has no complaint for this model year.

Investigations

The NHTSA investigation file has no investigation that names this model year.

Investigation: A study of a possible safety defect by the NHTSA Office of Defects Investigation. An investigation with no closing date in the NHTSA file is open.

Other model years

The number under each year is the number of recall campaigns.

A year without a link has fewer than 2 campaigns and fewer than 25 complaints. It has no page.

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Official channels

NHTSA VIN lookupNHTSA shows the unrepaired recalls of one vehicle from its VIN or its license plate.
NHTSA: report a safety problemThe NHTSA form for a complaint about a vehicle, a tire, a child seat or equipment.
NHTSA page of the 2021 IC Bus CesbThe recalls, the complaints and the investigations that NHTSA shows for this model year.

Cite this page

Recall Register. 2021 IC Bus Cesb: recalls and complaints. https://recallregister.com/vehicle/ic-bus/cesb/2021/. Source: NHTSA Office of Defects Investigation, recall, complaint and investigation files. Data through 29 Sep 2026.

Sources

Source: NHTSA Office of Defects Investigation
Licence: US government work, public domain
Recall file through: 29 Sep 2026
Complaint file through: 15 May 2019
First complaint in the file: 1 Jan 1995
Manufacturer in the recall file: International Motors, LLC

The NHTSA record is the authority. A complaint count is the number of different complaint numbers for the make, the model and the model year. How the register is made. Report an error.

Questions

How many units are in the recall campaigns for the 2021 IC Bus Cesb?: 39,730 units in 4 campaigns. A campaign can name other models and model years, and its units include them.
How many recall campaigns does the IC Bus Cesb have for all model years?: NHTSA lists 77 recall campaigns for the IC Bus Cesb, model years 2002 to 2027. 4 of them name the 2021 model year.
Is an NHTSA investigation of the 2021 IC Bus Cesb open?: The NHTSA investigation file has no investigation that names this model year.