- The 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.
- The 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.
- The 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.
Engine & cooling
2022 IC Bus Cesb Engine problems
Owners have filed 4 complaints about the 2022 IC Bus Cesb's engine & cooling with NHTSA - 80% of all its complaints, most recently on January 20, 2026. Stalling, loss of power, oil consumption, overheating, head gaskets, timing chains and engine failure.
- Complaints
- 4
- Recalls
- 1
- Crashes
- 0
- Fires
- 0
- Injuries
- 0
- Deaths
- 0
Engine recalls for the 2022 IC Bus Cesb
Engine complaints
Engine exhaust head pipes before the catalytic converter melts down from excessive engine heat, creating a large exhaust hole. This is a school bus
The engine exhaust downpipe melted and cracked- creating a large exhaust pipe hole near the engine exhaust manifold. Releasing exhaust gases and potential flames. This is a school bus and it happens frequently with this model.
This is a school bus. Exhaust down pipe from exhaust manifold melted down and created a large hole for fumes and potential fire from excessive heat/fuel issue in engine.
School Bus- Engine exhaust pipe from the exhaust manifold has melted from excessive heat in the system creating large hole for fumes and potential fire to escape. Exhaust is inadequate for the heat levels from the engine or engine performance is misprogrammed to create excessive heat/fuel. Widespread issue with many school buses in our fleet with the same powertrain.
IC Bus Cesb engine complaints by year
Cesb engine problems, every yearSource: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked . Complaints are owners' own reports and are not verified. How we use the data