2027 IC BUS Cesb: common problems
The maker issued 13 service bulletins for this year. Details by component below, with sources.
Key figures
- Technical service bulletins (TSB)
- 13
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Structure | 0 | 0 | 4 |
| Electrical system | 0 | 0 | 3 |
| Engine | 0 | 0 | 3 |
| Forward collision avoidance | 0 | 0 | 1 |
| Lane departure | 0 | 0 | 1 |
| Powertrain | 0 | 0 | 1 |
| Visibility | 0 | 0 | 1 |
| Other | 0 | 0 | 1 |
Comparison
What to check before buying
- Structure. Rails, pillars, panel gaps, signs of pulling or welding.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Forward collision avoidance. Radar and camera: calibration after bumper or windshield replacement.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- Certain 2025 thru 2027 IC Bus™ CE Series school buses and IC Bus™ Electric CE Series school buses entrance…
Certain 2025 thru 2027 IC Bus™ CE Series school buses and IC Bus™ Electric CE Series school buses entrance doors may fall out of adjustment over time and with use. A door that is not adjusted properly may result in an…
- This document provides guidance for assessing the feasibility of implementing a customer-requested change…
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…
- This document is intended to inform dealers, technicians, parts departments, and customers of a change…
This document is intended to inform dealers, technicians, parts departments, and customers of a change made to radio software to support updated Collision Mitigation, Lane Departure Warning (LDW), and Blind Spot…
- 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 added or removed, the comparison runs automatically with no…
- New CARB Idle Reduction Change Request
- Engine replacements for all International engines will need to follow this procedure
- This document will guide the user through a step-by-step procedure for detecting water leaks in vehicle…
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.
- In some geographic areas, ambient temperatures reaching below 40°F (4°C), including high levels of…
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…
- This document will guide the user through repairing a Next Gen CE Bus Driver's Window with loose,…
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.
- IC Bus Operator's Manuals
- In some geographic areas, ambient temperatures reaching below 15°F (-10 °C), including high levels of…
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…
- This document will guide the user through understanding Prop Shaft Codes and understanding the variations…
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.)
NHTSA lists 13 bulletins for this year; the 12 newest are shown here.
Other years of this model
Questions and answers
What are the most common problems with the 2027 IC BUS Cesb?
There are no owner complaints in the NHTSA data for this year; the data comes from 13 manufacturer service bulletins.
How many service bulletins (TSB) were issued for the 2027 IC BUS Cesb?
NHTSA lists 13 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2027 IC BUS Cesb from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2027 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-04.