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RECALLROADTHE CAMPAIGN RECORD

MODEL-YEAR RECALL REPORT

2021 Ic Bus Cesb recalls

NHTSA's September 21, 2026 snapshot lists 4 safety recall campaigns for the 2021 Ic Bus Cesb, spanning 3 component groups. A model match does not confirm that a specific VIN is included.

Official source: NHTSA recall campaign file · Snapshot September 21, 2026

URGENT CAMPAIGN FLAG

NHTSA records include a Park Outside advisory for at least one campaign associated with 2021 Ic Bus Cesb. Open the campaign and verify the VIN before operating or parking the vehicle.

Distinct campaigns4not VIN-specific
Component groups3distinct top-level categories
Latest recordSeptember 4, 2025report received
VIN resultNot checkeduse official lookup

01 / OFFICIAL CAMPAIGNS

2021 Ic Bus Cesb recall campaigns

The 2021 Ic Bus Cesb report contains 4 distinct NHTSA campaigns; the most recently received record is campaign 25V580000 dated September 4, 2025.
PARK OUTSIDE
Component
SERVICE BRAKES, HYDRAULIC
Report received
August 6, 2025
Potential units
16,553campaign-wide
Defect and consequence

Defect: 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.

Why it matters: An electrical short in the brake pressure switch can overheat the circuit and increase the risk of a fire while driving or parked.

Remedy

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.

Owner notification: December 15, 2025 · Filing manufacturer: International Motors, LLC

PARK OUTSIDE
Component
SERVICE BRAKES, HYDRAULIC
Report received
June 2, 2023
Potential units
15,398campaign-wide
Defect and consequence

Defect: 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.

Why it matters: An electrical short in the brake pressure switch can overheat the circuit and increase the risk of a fire while driving or parked.

Remedy

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.

Owner notification: September 29, 2023 · Filing manufacturer: Navistar, Inc.

Component
STRUCTURE
Report received
September 4, 2025
Potential units
457campaign-wide
Defect and consequence

Defect: 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.".

Why it matters: Reduced structural integrity may increase the risk of injury in a crash.

Remedy

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.

Owner notification: December 8, 2025 · Filing manufacturer: International Motors, LLC

CAMPAIGN

NHTSA 21V837000

Component
ENGINE AND ENGINE COOLING
Report received
October 25, 2021
Potential units
7,322campaign-wide
Defect and consequence

Defect: 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.

Why it matters: 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

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.

Owner notification: January 18, 2022 · Filing manufacturer: Navistar, Inc.

02 / COMPONENT BREADTH

What defects are listed for the 2021 Ic Bus Cesb?

The most frequent component groups in 2021 Ic Bus Cesb campaign records are Service Brakes, Hydraulic (2), Engine And Engine Cooling (1), Structure (1); these counts describe filed campaigns rather than observed failure rates.
Service Brakes, Hydraulic2
Engine And Engine Cooling1
Structure1