Use cautionVehicle recall · NHTSA · Published October 25, 2021
Navistar 2020-2023 IC CE School Buses: Engine Shutdown Risk
Navistar recalls 2020-2023 IC CE school buses with potential engine shutdowns causing crashes. Owners must contact Navistar by Jan 18, 2022 for free ECM reprogramming.
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.
Navistar is recalling certain 2020-2023 IC CE school buses because their engine control modules can cause unexpected shutdowns, increasing crash risk. This could lead to dangerous situations where school buses need to evacuate passengers in traffic. Read more at govinfonow.com/recall/79668-navistar-2020-2023-ic-ce-school-buses-engine-shutdown-risk.
“Navistar 2020-2023 IC CE School Buses: Engine Shutdown Risk.” GovInfoNow, updated August 18, 2026. https://govinfonow.com/recall/79668-navistar-2020-2023-ic-ce-school-buses-engine-shutdown-risk. Based on NHTSA recall #21V837000 (https://www.nhtsa.gov/recalls?nhtsaId=21V837000).
NHTSA announced on Oct. 25, 2021, that Navistar is recalling certain 2020-2023 IC CE school buses due to an engine control module fault causing unexpected shutdowns. Dealers will reprogram the ECM free of charge. Owners were notified by mail in January 2022.
How to tell if you have it
IC BUS CESB, 2020-2023
What to do
Dealers will reprogram the ECM, free of charge. Owners may contact Navistar customer service at 1-800-448-7825. Navistar's number for this recall is 21507.
The hazard
The engine control module may set a fault code that results in an unexpected engine shut down, increasing the risk of a crash. A disabled school bus may require an evacuation procedure in an uncontrolled traffic situation, increasing the risk of injury to passengers.
Context
Navistar has 185 other recalls on record since Nov. 24, 2008. Recent recalls include a brake caliper detachment risk for 2024-2025 school buses (Oct. 2, 2024) and air bag deployment issues for 2025 CV vehicles (Oct. 1, 2024). Other recent recalls of similar products include an International IC Bus CESB recall for overloading risk (Nov. 13, 2025), an International IC Bus EVSB electrical shock risk (April 9, 2026), and a drive motor detachment risk for the 2026 IC Bus EVSB (May 28, 2026).
How to tell if you have this one
Check if your school bus is a 2020-2023 model with the IC CE designation. The recall was notified to owners via mail on January 18, 2022.
Brand
Navistar
Category
Vehicle
Based on the official NHTSA remedy
What to do — step by step
Contact Navistar
Call Navistar customer service at 1-800-448-7825 to schedule free ECM reprogramming.
Official remedy
What NHTSA says to do
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.
How this recall unfolded
Recall timeline
Owners were mailed letters 3 months after NHTSA received the defect report.
1NHTSA received the defect report
2Owner letters mailed
Dates from the agency record only; steps without a date are left out.
Subject: Recall 21V837000 — Navistar 2020-2023 IC CE School Buses: Engine Shutdown Risk
Hello,
I own a Navistar 2020-2023 IC CE School Buses: Engine Shutdown Risk that is covered by recall 21V837000 from Navistar.
The official recall notice states: 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.
I’m writing to arrange the remedy described in the recall (a refund, repair, or replacement as applicable). Could you please tell me the next steps to resolve this?
Thank you.
The facts (hazard, remedy, dates, manufacturer) are pulled from the official NHTSA recall record. The plain-language summary and step-by-step checklist are written by GovInfoNow to make the official notice easier to act on — they don’t replace it.
Plain-language summary written by qwen3:4b on August 18, 2026, from the official record above. Not reviewed by a person — if it conflicts with the NHTSA notice, the notice is correct. Report an error on this page.
GovInfoNow is an independent service and is not a government agency. We republish official NHTSA recall data; we don’t issue, amend or administer recalls.