- The problem
- 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."
- The risk
- Reduced structural integrity may increase the risk of injury in a crash.
- The fix
- 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.
Vehicle safety record
2020 IC Bus Cesb Problems, complaints & recalls
Owners have filed 1 complaint about the 2020 IC Bus Cesb with NHTSA, most often about the body, doors & structure (1). It is covered by 12 recalls, the latest in September 2025 for the body. For comparison, the 2019 has 0 and the 2021 has 3.
NHTSA data checked
CAbout as many problems as a typical Cesb year, for its age
#347 most complained-about 2020 vehicle
- Complaints
- 1
- Recalls
- 12
- Crashes
- 0
- Fires
- 0
- Injuries
- 0
- Deaths
- 0
Most common 2020 IC Bus Cesb problems
Share of all 1 complaints. One complaint can name more than one area. Tap an area for its complaints and recalls.
2020 IC Bus Cesb recalls 12
Recall repairs are free. Your dealer fixes them whether or not you bought the car there - check your VIN at nhtsa.gov/recalls to see if yours is done. What to do
Park outside
- The problem
- 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.
- The risk
- An electrical short in the brake pressure switch can overheat the circuit and increase the risk of a fire while driving or parked.
- The fix
- 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.
Park outside
- The problem
- 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.
- The risk
- An electrical short in the brake pressure switch can overheat the circuit and increase the risk of a fire while driving or parked.
- The fix
- 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.
- 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.
- The problem
- Navistar, Inc. (Navistar) is recalling certain 2017-2021 IC CE School Buses equipped with Cummins B6.7 diesel engines with fuel module option number FS90301 or FS90453. The electric fuel heater within the fuel module may overheat and cause plastic in the fuel heater to melt and potentially catch fire. It may also lead to engine stalling.
- The risk
- A fire increases the risk of injury. An engine stall can increase the risk of a crash.
- The fix
- Cummins will notify the affected Navistar customers and dealers will disable the fuel heater by either installing a plug in place of the heater or otherwise rendering the fuel heater non-operable and remove the fuse supplying electrical power to the fuel heater and install a cover over the wire harness connector, free of charge. The recall began May 28, 2020. Owners may contact Cummins customer service at 1-800-286-6467.
- The problem
- Navistar, Inc. (Navistar) is recalling certain 2019-2020 IC RE and 2020 IC CE school buses equipped with feature code 48PZP, 48PZR, 48RZY, 48SXV, or 48SZG (Prolo emergency exit roof hatches). Due to a manufacturing issue, the roof hatch external handle may unexpectedly break under reasonable use.
- The risk
- If the roof hatch external handle breaks, in the event of an emergency, the hatch cannot be easily opened from outside the vehicle, increasing the risk of injury.
- The fix
- Navistar will notify owners, and dealers will replace the outer handle, free of charge. The recall began October 7, 2019. Owners may contact Navistar customer service at 1-800-448-7825. Navistar's number for this recall is 19513.
- The problem
- Navistar, Inc. (Navistar) is recalling certain 2020 IC CE school buses equipped with PSI gasoline or propane engines and C7 Body Control Modules (BCM). An electrical overload condition in the BCM from the starter solenoid may occur and cause damage to the starter circuit of the BCM, possibly resulting in an unintended command to crank the engine when the ignition key is in the run position and the transmission is in the park or neutral position.
- The risk
- If the ignition is in the run position and the engine starts unexpectedly while the vehicle is being serviced, there would be an increased risk of personal injury.
- The fix
- Navistar will notify owners, and dealers will install an overlay harness and relay to provide electrical power to the starter circuit, instead of using the BCM to provide power. This repair will be performed free of charge. The recall began September 12, 2019. Navistar's number for this recall is 19512.
- The problem
- Navistar, Inc. (Navistar) is recalling certain 2016-2020 IC CE and 2019 IC RE school buses equipped with Bendix ADB 22X brake calipers. The driver side rear brakes may drag.
- The risk
- A dragging brake may cause damage to the brake components, which may activate the ABS warning light. The warning light may cause the driver to immediately stop the vehicle and transfer occupants. Additionally, the high temperatures at the wheel end can increase the risk of a fire. Either condition increases the risk of injury.
- The fix
- Navistar will notify owners, and dealers will replace the left rear caliper with a redesigned adjuster mechanism, free of charge. The recall began July 12, 2019. Owners may contact Navistar customer service at 1-800-448-7825. Navistar's number for this recall is 19506.
- The problem
- Navistar, Inc. (Navistar) is recalling certain 2017-2020 IC Bus CESB school buses equipped with Cummins B6.7 diesel engines with fuel module option number FS90301 or FS90453. The electrical wiring within the fuel heater may overheat and may cause plastic in the fuel heater to melt and potentially catch fire. It may also lead to engine stalling.
- The risk
- A fire increases the risk of injury. An engine stall can increase the risk of crash.
- The fix
- Cummins will notify the affected Navistar owners. Cummins dealers will replace the fuel heater with a newly designed fuel heater, free of charge. The recall began May 2, 2019. Owners may contact Cummins customer service at 1-800-286-6467 or Navistar customer service at 1-800-448-7825.
- The problem
- Navistar, Inc. (Navistar) is recalling certain 2017-2020 International DuraStar and WorkStar, 2018-2020 IC Bus CECB, International HV and MV, 2018-2019 IC Bus 1300 FBC and HCCB, and 2019-2020 IC Bus TCCB vehicles equipped with Cummins B6.7 diesel engines with fuel module option number FS90301 or FS90453. The electric fuel heater within the fuel module may overheat and cause plastic in the fuel heater to melt and potentially catch fire. It may also lead to engine stalling.
- The risk
- A fire increases the risk of injury. An engine stall can increase the risk of crash.
- The fix
- Cummins will notify the affected Navistar owners. Cummins dealers will replace the fuel heater with a newly designed fuel heater, free of charge. The recall began May 2, 2019. Owners may contact Cummins customer service at 1-800-286-6467 or Navistar customer service at 1-800-448-7825.
- The problem
- Navistar, Inc. (Navistar) is recalling certain 2019-2020 IC Bus CE school buses equipped with hydraulic brakes. The brake pressure switch on these buses may become stuck possibly resulting in a false fault code and brake warning light on the instrument cluster.
- The risk
- A false code or a brake warning light may lead a driver to immediately pull over to transfer passengers to another bus, which can increase the risk of injury. Additionally, if the driver is aware that the warning is false, they may continue to use the bus, and in the event of an actual brake system problem, the driver will not be warned, increasing the risk of a crash.
- The fix
- Navistar has notified owners, and dealers will inspect and replace any switch found from the suspect lot, free of charge. The recall began January 30, 2019. Owners may contact Navistar customer service at 1-800-448-7825. Navistar's number for this recall is 18520.
- The problem
- Navistar, Inc. (Navistar) is recalling certain 2019-2020 IC Bus CE school buses equipped with feature code 04AZS (4-channel Antilock Brakes, 4-channel Electronic Stability and Automatic Traction Control. The brake air line tube to the left brake modulator valve may have been improperly routed, possibly resulting in the line kinking, causing the vehicle to vehicle to pull to the right when braking or preventing the anti-lock brakes from functioning properly.
- The risk
- A vehicle pulling to the right during braking or improper ABS function can increase the risk of a crash.
- The fix
- Navistar will notify owners, and dealers will reroute the air line tube and replace any kinked tube, free of charge. The recall began December 20, 2018. Owners may contact Navistar customer service at 1-800-448-7825. Navistar's number for this recall is 18517.
What owners say
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1 complaints about the 2020 IC Bus Cesb
Newest first, as filed with NHTSA by owners.
1. Component: Bus 15 - Right front outrigger. Yes it is available for inspection 2. Safety: Outrigger cracked creating insufficient support of the school bus body 3. We were told it was not covered under warranty and no recalls have been generated and therefore paid for the first repair through Wolfington Body Co. Inc. Their repair did not hold and it came apart and on 8/7/2024 it was repaired a second time, no charge. It came apart again and on 1/30/2025 it was repaired a third time, no charge. 4. The dealer...
Read the full complaint
has inspected the bus, we are not aware of the manufacturer or anyone else having inspected the bus. The dealer did say they were going to present this to the manufacturer but we have never heard anything more about it. 5. We first noticed the crack when we inspected it on 4/4/2024 because we heard and felt an unusual noise/motion when driving on the roads in our town. PLEASE NOTE: Since then we have had a total of 4 out of our 5 International Gas Buses with the identical problem. Those Buses are: Bus 3 The crack was noticed on 10/24/2024 mileage 37,052 cost to repair $3,010.18. This repair came apart again on 10/24/2025 and was repaired on 2/13/26 no charge. Bus 1 The crack was noticed on 11/19/2024 mileage 46,718 the Dealer repaired at no cost due to negotiating a compromise. Bus 12 The crack was noticed on 5/23/2025 mileage 40,310 cost to repair $3,005.58. I have been told by the Dealer's Service Team through an email dated 8/4/2025 that they would be submitting these to the Manufacturers "goodwill process in hopes of having the previous and current repairs reimbursed" To date, we have heard nothing. We strongly feel this is a manufacturer design defect and it must be happening to other IC School Buses as well.
IC Bus Cesb: every year compared
All Cesb yearsQuestions about the 2020 IC Bus Cesb
Does the 2020 IC Bus Cesb have any recalls?
Yes - NHTSA lists 12 recalls for the 2020 IC Bus Cesb: body (September 2025); fluid (August 2025); fluid (June 2023); engine control module (ecu / ecm) (October 2021) and more. Recall repairs are free at any authorized dealer. Enter your VIN at nhtsa.gov/recalls to see whether yours has been fixed.
What are the most common problems with the 2020 IC Bus Cesb?
By the complaints owners filed with NHTSA, the most common problem areas are the body, doors & structure (1).
How many complaints has the 2020 IC Bus Cesb had?
1 complaints have been filed with NHTSA, the first on April 10, 2026 and the latest on April 10, 2026. Of these, 0 describe a crash and 0 a fire, and together they report 0 injuries and 0 deaths.
Is the 2020 IC Bus Cesb a reliable vehicle?
Its Safety Index is 41 out of 100 (grade C: about as many problems as a typical IC Bus Cesb year, for its age). The index weighs complaints, crashes, fires, injuries, deaths and recalls against how long the vehicle has been on the road, compared with the same model's other years. It is not a measure of every repair - read the complaints and owner experiences, and have any used vehicle inspected before you buy.
Which IC Bus Cesb years have the most complaints?
2022 (5), 2021 (3), 2006 (2). See every IC Bus Cesb year compared.
What should I do if my 2020 IC Bus Cesb has a problem?
If it is a safety problem, stop driving it if it is unsafe and contact your dealer. Report it to NHTSA at nhtsa.gov/report-a-safety-problem - enough reports start investigations and recalls - and share your experience here so other owners know what to look for.
Source: 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