Complaints over time
Complaints about the 2023 IC BUS Cesb peaked in 2025, with 1 filed
Owner complaints about this model year, by the year they were filed with NHTSA.
Source: NHTSA ODI complaints file. The lighter column runs through October.
Model yearDo not drivePark outside
2023 IC BUS Cesb
Bus, gasoline, built in United States. Owner complaints on file from May 20, 2025 to Sep 2, 2026.
Recall campaigns covering this model year17127k vehicles or units across those campaigns
Owner complaints2Close to the median 2023 bus
Severity index0.02023 buss average 0.0
First 24 months0Complaints in its first two years
Components
50% of complaints about the 2023 IC BUS Cesb name engine and cooling
Owner complaints by component. Hover or focus a bar for the crash, fire, injury or death count.
Source: NHTSA ODI complaints file. A complaint can name more than one component; it is counted under the first.
Recalls
17 recall campaigns cover the 2023 IC BUS Cesb
Check a specific vehicle by VIN on NHTSA's site: a campaign may cover only part of a model year's production.
| Campaign | Filed | Subject | Component | Vehicles | Remedy |
|---|---|---|---|---|---|
| 26V-168 | Mar 19, 2026 | Body panel joint may have been attached without sufficient epoxy coverage | Structure | 2,874 | Repair or modification |
| 26V-111 | Feb 26, 2026 | Brake lines may have been installed with incorrect hardware, which can result in brake line damage and cause a leak | Brakes | 4,393 | Part replacement |
| 25V-783 | Nov 13, 2025 | While carrying the maximum number of occupants, the bus may exceed Gross Vehicle Weight Rating (GVWR) when the fuel tank and fluid reservoirs are full | Equipment | 142 | Repair or modification |
| 25V-580 | Sep 4, 2025 | Underfloor reinforcement may not have been installed, compromising the structural integrity of the buses | Structure | 457 | Repair or modification |
| 25V-503 | Aug 6, 2025 | Brake pressure switch assembly may leak brake fluid into the brake pressure switch's electrical components and cause an electrical short-circuitPark outside | Brakes | 16,553 | Repair or modification |
| 23V-398 | Jun 2, 2023 | Brake pressure switch assembly may leak brake fluid into the brake pressure switch's electrical components and cause an electrical short-circuitPark outside | Brakes | 15,398 | Part replacement |
| 23V-371 | May 25, 2023 | Anti-lock brake system (ABS) indicator light does not remain illuminated when a malfunction exists, and when the vehicle's ignition switch is on,… | Brakes | 19,376 | Software update |
| 23V-065 | Feb 10, 2023 | Roof panel may have been manufactured with insufficient joint strength | Structure | 12,507 | Repair or modification |
| 22V-909 | Dec 8, 2022 | Fasteners that connect the transverse torque arm to the rear axle housing may have been tightened incorrectly, which can allow the rear axle to… | Suspension | 6,948 | Part replacement |
| 22V-872 | Nov 23, 2022 | Fuel vapor line without the heat shield tubing may have been installed, exposing the line to heat from the exhaust system | Fuel system | 196 | Part replacement |
| 22V-870 | Nov 23, 2022 | Hex flange lock nuts, used in the suspension and steering joints, were improperly heat treated and may lose tension over time | Steering | 5,645 | Part replacement |
| 22V-869 | Nov 23, 2022 | Hex flange lock nuts, used in the suspension and steering joints, were improperly heat treated and may lose tension over time | Steering | 25,822 | Part replacement |
| 22V-610 | Aug 10, 2022 | Engine control module (ECM) may experience an internal electrical short-circuit, causing the engine to stall | Engine and cooling | 33 | Part replacement |
| 22V-429 | Jun 16, 2022 | Steering gears may have been assembled incorrectly, which can cause the gear to fracture | Steering | 3,570 | Part replacement |
| 22V-367 | May 23, 2022 | Steering wheel retaining nut may have been tightened incorrectly, which can allow the steering wheel to loosen and detach from the steering column…Do not drive | Steering | 4,970 | Repair or modification |
| 22V-283 | Apr 27, 2022 | Warning label notifying the driver that the collision mitigation system is inoperative may be missing | Equipment | 337 | Repair or modification |
| 21V-837 | Oct 25, 2021 | Engine control module (ECM) may set a fault code that results in an unexpected engine shut down | Engine and cooling | 7,322 | Software update |
Source: NHTSA ODI recalls file.
Owner complaints
What owners reported about the 2023 IC BUS Cesb
The full text of every complaint filed with NHTSA about this model year, newest first. Complaints are filed by owners and are not verified by NHTSA; NHTSA removes personal details before publishing.
2 complaints on file, page 1 of 1.
- Filed Sep 2, 2026Failure Jul 7, 2026Walden NY, NYEngine
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.
NHTSA complaint 11761570 - Filed May 20, 2025Failure May 5, 2025brooklyn, NYBody
The roof leaks in several areas. The water gets on the floor and seats increasing the chance that children will slip and fall on the wet floors and seats. This has been to the dealer more than once but the roofs still leak. We have more than one bus of the same age that leak
NHTSA complaint 11662097
Source: NHTSA ODI complaints file.
Investigations
NHTSA has not opened an investigation on this model year
Source: NHTSA ODI investigations file.
Service bulletins
88 manufacturer communications cover this model year
Technical service bulletins and other notices the manufacturer sent to dealers. A bulletin is not a recall; the 60 most recent are listed.
- IK1201493 Aug 20, 2026 · Service Bulletin/Repair Instructions
The purpose of this article is to provide updated repair guidelines for the engine oil pan leak on all 8.8L gasoline and LPG engines. Engine oil can leak from the rear of the engine oil pan due to an excessive gap in the sealing area between the engine oil … - IK2200156 Jul 20, 2026 · Service Bulletin/Repair Instructions
This document provides guidance for troubleshooting issues with the entrance door of the Next Gen CE Bus. While the primary focus is on achieving a properly adjusted latching entrance door, it also includes additional helpful tips. Please note that this doc… - 26102 Jul 7, 2026 · Service Campaign
This document will guide the user through installing 12V disconnect label to the battery door. - IK1201493 May 4, 2026 · Service Bulletin/Repair Instructions
The purpose of this article is to provide updated repair guidelines for the engine oil pan leak on all 8.8L gasoline and LPG engines. Engine oil can leak from the rear of the engine oil pan due to an excessive gap in the sealing area between the engine oil … - 26104 May 20, 2026 · Service Campaign
Entrance door set screw may loosen over time and with use. - 26101 May 22, 2026 · Service Campaign
Certain International® trucks and IC BusTM CE Series buses may have out of date BCM programing that may cause erroneous fault codes after a vehicle sits for 2 or 3 days. - IK2600255 Apr 23, 2026 · Service Bulletin/Repair Instructions
This document provides guidance for assessing the feasibility of implementing a customer-requested change to an engine or vehicle parameter/feature. Customer requested changes will be approved in accordance with the requirements specified in 40 CFR Part 103… - IK1500105 Apr 23, 2026 · Service Bulletin/Repair Instructions
This document is for Diesel buses MY2020, MY2021, MY2022, MY2023, and MY2024 specifically built between 11/30/20 and 5/18/23 that are experiencing fuel leaks at the fuel tank cap for not being seated fully, and for MY2024 and MY2025 buses built between 1/2/… - 26104 Apr 24, 2026 · Service Campaign
Entrance door set screw may loosen over time and with use. - 26101 Apr 7, 2026 · Service Campaign
Certain International® trucks and IC BusTM CE Series buses may have out of date BCM programing that may cause erroneous fault codes after a vehicle sits for 2 or 3 days. - IK2200166 Mar 31, 2026 · Service Bulletin/Repair Instructions
This document will instruct the user on installing and programming a fuel water separator heater system for a Next Gen Bus built without the heater option. - IK4300035 Feb 3, 2026 · Service Bulletin/Repair Instructions
This tool is designed to compare Diamond Logic feature data across multiple vehicle configuration files. It allows users to quickly load files either manually or directly from the Diamond Logic Builder Vehicles folder using VIN-based selection. As files are… - IK2600255 Jan 26, 2026 · Other
This document provides guidance for assessing the feasibility of implementing a customer-requested change to an engine or vehicle parameter/feature. Customer requested changes will be approved in accordance with the requirements specified in 40 CFR Part 103… - IK2600090 Feb 5, 2026 · Other
New CARB Idle Reduction Change Request - IK2600047 Jan 2, 2026 · Service Bulletin/Repair Instructions
Engine replacements for all International engines will need to follow this procedure. - IK1600272 Dec 19, 2025 · Service Bulletin/Repair Instructions
This document will guide the user through a step-by-step procedure for detecting water leaks in vehicle cabs and windshields using an ultrasonic sound detector. - IK1201009 Dec 18, 2025 · Service Bulletin/Repair Instructions
In some geographic areas, ambient temperatures reaching below 40°F (4°C), including high levels of humidity, an operator may experience engine stalling, low performance, and/or poor aftertreatment performance. This is caused by condensation accumulating and… - IK2200169 Nov 8, 2025 · Service Bulletin/Repair Instructions
This document will guide the user through repairing a Next Gen CE Bus Driver's Window with loose, displaced, or falling-out upper or lower seals. See symptoms below for an example of the issue. - IK2200119 Nov 7, 2025 · Service Bulletin/Repair Instructions
IC Bus Operator's Manuals - IK1201009 Nov 6, 2025 · Service Bulletin/Repair Instructions
In some geographic areas, ambient temperatures reaching below 15°F (-10 °C), including high levels of humidity, an operator may experience engine stalling, low performance, and or poor aftertreatment performance. This is caused by condensation accumulating … - IK0600030 Dec 5, 2025 · Service Bulletin/Repair Instructions
This document will guide the user through understanding Prop Shaft Codes and understanding the variations of prop codes. (Metric Prop codes start with the number a 4 and Non metric Prop codes start with a 2.) - IK2300043 Oct 23, 2025 · Service Bulletin/Repair Instructions
This document will guide the user through inspecting the air conditoning cube fuse at the low-voltage (LV) battery for the correct amperage rating. It has been found, that certain Electric CE Series Buses had a 75A rating cube fuse installed vs the correc… - IK2200156 Sep 15, 2025 · Service Bulletin/Repair Instructions
This document provides guidance for troubleshooting issues with the entrance door. - IK3400001 Aug 28, 2025 · Service Bulletin/Repair Instructions
Title: Service Portal iKNow Feedback Case Types Applies To: All - IK2300042 Aug 13, 2025 · Service Bulletin/Repair Instructions
Title: Driveline Vibration w/SPL170 Applies To: 2021 - 2025 International® IC Bus® Electric CE Series - IK2300017 Aug 26, 2025 · Service Bulletin/Repair Instructions
Title: Electric Vehicle Air Dryer Operation - IK1400005 Aug 25, 2025 · Service Bulletin/Repair Instructions
Title: Driveline Information Center and Troubleshooting Procedures Applies To: All Vehicles - IK2200170 Jul 11, 2025 · Service Bulletin/Repair Instructions
Title: Next Gen CE Bus Starter Interlock Dash Chime Applies To: Next Gen CE Bus with starter interlock feature built prior to 2/19/25 - IK1900022 Jul 18, 2025 · Service Bulletin/Repair Instructions
Title: A/C Refrigerant and Oil Capacities Applies To: All current models - IK0900157 Jul 17, 2025 · Service Bulletin/Repair Instructions
Title: Fan belt replacement guidelines for frayed edges Applies To: All Models - IK0800686 Jul 18, 2025 · Service Bulletin/Repair Instructions
Title: Radio Clock is Freezing Applies To: Next Gen CE Bus - IK2300021 Jun 26, 2025 · Service Bulletin/Repair Instructions
Title: Servicing Air Conditioning Systems on Electric Vehicles - IK0500054 Jun 4, 2025 · Service Bulletin/Repair Instructions
Title: Steering Gear Seal Repair Guidelines Applies To: Steering gears - IK2600069 May 20, 2025 · Service Bulletin/Repair Instructions
Title: How to Request a Horsepower Quote Applies To: All International and Cummins Electronic engines - IK2200088 Apr 22, 2025 · Service Bulletin/Repair Instructions
Title: Factory Installed Air Conditioning, EC4.0 System BE, CE, FE, RE Bus Models - IK2300041 Apr 21, 2025 · Service Bulletin/Repair Instructions
Title: 6090/6091 Connector Damage Applies To: IC Bus® Electric CE Series, International® eMV™ Series - IK2300021 Mar 25, 2025 · Service Bulletin/Repair Instructions
3/25/2025 - Updated service part numbers and addressed typos - IK0800672 Feb 7, 2025 · Service Bulletin/Repair Instructions
Applies To: Units built 12/20/2022 - 11/11/2024 On the following models with Feature Codes: CE Bus- 0510234 LT RH- 001MBS & 0510234 LT RH- 008TRR or 0510234 & 001LRM or 001LRV or 001LRN or 001LRL - IK1400023 Oct 8, 2024 · Service Bulletin/Repair Instructions
This article addresses chassis lean conditions on all chassis. This does not include any diagnostics for body leans such as a cab lean. Keep in mind that a chassis lean may cause or accentuate a cab lean. Filling out the printable form and using the notes i… - IK0900141 Aug 6, 2024 · Service Bulletin/Repair Instructions
This document will guide a user to replace and reroute Charge Air Cooler (CAC) for vehicles built with the Cummins ISB and B6.7 engines. - IK0400037 Apr 29, 2024 · Service Bulletin/Repair Instructions
This document is to guide users to eliminate brake pedal rattle noise. - IK08000403 Apr 24, 2024 · Service Bulletin/Repair Instructions
This document details the procedure that must be followed to ensure proper alternator troubleshooting. - IK0800482 Apr 24, 2024 · Service Bulletin/Repair Instructions
This document covers battery diagnostics, maintenance and storage requirement. - IK0800351 Nov 21, 2023 · Service Bulletin/Repair Instructions
J1939 Data Link Source Address Information - IK2600069 Sep 7, 2023 · Service Bulletin/Repair Instructions
How to request a horsepower quote; all International and Cummins engines - IK2200109 Sep 25, 2023 · Service Bulletin/Repair Instructions
Bus seat back foam inspection guidelines - IK1900291 Sep 28, 2023 · Service Bulletin/Repair Instructions
Webasto Thermo Pro 90 Service and Repair Manual; Only CE bus with feature code 0049JAN or 0049JAP - IK1201457 Sep 22, 2023 · Service Bulletin/Repair Instructions
Cummins B6.7 Grid Heater Relay - IK0400040 Sep 26, 2023 · Service Bulletin/Repair Instructions
General Wheel Speed Sensor Troubleshooting - IK0300010 Sep 29, 2023 · Service Bulletin/Repair Instructions
Diagnosis of chassis wander complaints. - IK2200154 Aug 18, 2023 · Service Bulletin/Repair Instructions
Luggage rack upholstery repair; only busses equipped with luggage rack. - IK0800351 Aug 14, 2023 · Service Bulletin/Repair Instructions
J1939 Data Link Source Address Information - IKo800080 Aug 14, 2023 · Service Bulletin/Repair Instructions
J1939 Data Link Troubleshooting - 23901 Aug 17, 2023 · Service Bulletin/Repair Instructions
These certain buses may have roof water leaks resulting from incorrect assembly described in Roof Joint Recalls 23501 and 23502. - IK1500105 Jun 21, 2023 · Service Bulletin/Repair Instructions
Bus Diesel fuel Cap Leaks; only models built 11/30/2020 through 05/18/2023 - IK2200153 May 15, 2023 · Service Bulletin/Repair Instructions
Bus roof leaks - IK2200152 May 31, 2023 · Service Bulletin/Repair Instructions
CE Bus Engine Cover Sealing - IK0700120 May 10, 2023 · Service Bulletin/Repair Instructions
QLS Emergency Calibration Revert Process - 23103 May 9, 2023 · Service Bulletin/Repair Instructions
These certain buses may have a rear A/C system compressor mounting bracket with insufficient clearance between the compressor and bracket that could result in rear A/C compressor lock up. - 22502 May 10, 2023 · Service Bulletin/Repair Instructions
Per agreement with EPA and CARB, Cummins, Inc. provided an emergency calibration for Cummins ISB, B6.7, ISL9, L9, and X15 engines when a DEF Quality Sensor (DQS) was not available. This action addressed the Diesel Exhaust Fluid (DEF) Quality Sensor failures…
Source: NHTSA manufacturer communications files.