- The problem
- Navistar, Inc. (Navistar) is recalling certain 2023 IC CE School Buses. The engine control module (ECM) may experience an internal electrical short-circuit, causing the engine to stall.
- The risk
- An unexpected engine stall can increase the risk of a crash.
- The fix
- Cummins will replace the ECM. Owner notification letters were mailed September 26, 2022. Owners may contact Navistar's customer service at 1-800-448-7825.
Engine & cooling
2023 IC Bus Cesb Engine problems
Owners have filed 1 complaint about the 2023 IC Bus Cesb's engine & cooling with NHTSA - 50% of all its complaints, most recently on September 2, 2026. Stalling, loss of power, oil consumption, overheating, head gaskets, timing chains and engine failure.
- Complaints
- 1
- Recalls
- 2
- Crashes
- 0
- Fires
- 0
- Injuries
- 0
- Deaths
- 0
Engine recalls for the 2023 IC Bus Cesb
- 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 complaints
Exhaust system failure,terible exhaust leaks AT EXHAUST MANIFOLDS. Pipes wrapped in insulation and metal causing high temps which are distoring pipe shapes and colapsing systems. Also a fire hazard if any fluids leak on them. These units are 2021's thru 2023's We have been in touch with International Dealer with no avail or help. They give all kinds of why's but no answers. They tell us to replace with same system at 11,000 dollars. These pipes are on 8.8 litre engine. Available for inspection. Yes dealer did see the problem.
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