IC Bus service campaign 25101
What it saysCertain IC Bus™ Electric CE Series buses may have the front and rear A/C evaporator temperature sensor harness routed incorrectly. NHTSA’s full summary ↓
IC Bus filed this with NHTSA as a service campaign dated May 27, 2025, received Jun 4, 2025, about the electrical system. It names 4 model years (2022–2025). A service campaign is not a safety recall — there is no NHTSA campaign number and no federal requirement — but it is usually work the manufacturer pays for on the vehicles it names; the dealer checks the VIN against the manufacturer’s list.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationCertain IC Bus™ Electric CE Series buses may have the front and rear A/C evaporator temperature sensor harness routed incorrectly.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 25101 | Service campaign | May 27, 2025 | 11019100 | PDF, 369 KB |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themAlso filed against: 2022 IC Bus Evsb; 2023 IC Bus Evsb; 2024 IC Bus Evsb; 2025 IC Bus Evsb.
None of these model years has a page on this site (it covers EPA-certified cars, trucks and SUVs from 2016), so the bulletin is listed here on its own.
More bulletins about the electrical system
Source: same model, same component group5 other manufacturer communications filed against the IC Bus Evsb under the same component group (electrical system), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 26106 | Service campaign | Oct 1, 2026 | HVAC control may experience shut off cycles during operation. |
| 26101 | Service campaign | May 22, 2026 | Certain International® trucks and IC BusTM CE Series buses may have out of date BCM programing that may cause erroneous fault codes after a… |
| 25109 | Service campaign | Apr 7, 2026 | Certain IC BusTM Electric CE Series buses may have incorrect suction and discharge pressure sensors. |
| 25108 | Service campaign | Dec 15, 2025 | Certain IC Bus™ Electric CE Series school buses may need to have the VCU calibrated to the latest calibration. |
| 24108 | Service campaign | Nov 11, 2024 | Certain electric vehicles may have been built without the Level 2 Manual Service Disconnects (MSDs). This document walks the user through i… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for IC Bus, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is IC Bus 25101 a recall?
No. A service campaign is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls.
Is the 25101 repair free?
A service campaign is usually paid by the manufacturer on the vehicles it names, within the terms and time limit the document sets; the dealer checks the VIN against the manufacturer’s list.
Which vehicles does 25101 cover?
The manufacturer filed it against 4 model years: 2022 IC Bus Evsb, 2023 IC Bus Evsb, 2024 IC Bus Evsb, 2025 IC Bus Evsb. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.