Isuzu service campaign V2403
What it says2024MY isuzu n-series vehicles equipped with 5.2L (4HK1) diesel engines and option (IE1) 4-WHEEL disc brakes were built with an engine control module (ECM) and diesel exhaust fluid control unit (DCU) containing… NHTSA’s full summary ↓
Isuzu filed this with NHTSA as a service campaign dated Jul 22, 2024, received Aug 5, 2024, about the engine — 1 document under this number: CB24-L-001. It names 3 model years (2022–2024). 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 communicationWhat it applies to, as NHTSA’s summary states it — build dates and equipment as the manufacturer filed them. The dealer checks the VIN and the build date on the door jamb; a vehicle outside the window is not covered by this bulletin.
CUSTOMER SATISFACATION CAMPAIGN_ ISUZU HAS DETERMINED THAT CERTAIN 2022 – 2024MY ISUZU N-SERIES VEHICLES EQUIPPED WITH 5.2L (4HK1) DIESEL ENGINES AND OPTION (IE1) 4-WHEEL DISC BRAKES WERE BUILT WITH AN ENGINE CONTROL MODULE (ECM) AND DIESEL EXHAUST FLUID CONTROL UNIT (DCU) CONTAINING AN ON BOARD DIAGNOSTIC (OBD) CALIBRATION ERROR FOR DIAGNOSTIC TROUBLE CODES (DTC) P2201 NOX SENSOR CIRCUIT PERFORMANCE SENSOR 1 AND P20EE DIESEL EXHAUST FLUID (DEF) SYSTEM NOX TRAP LOW EFFICIENCY.
Trouble codes it names: P20EE P2201
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| CB24-L-001 | Service campaign | Jul 22, 2024 | 11005679 | PDF, 298 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 Isuzu N-Series; 2023 Isuzu N-Series; 2024 Isuzu N-Series.
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 engine
Source: same model, same component group1 other manufacturer communication filed against the Isuzu N-Series under the same component group (engine), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| V2507 | Service campaign | Nov 21, 2025 | CUSTOMER SATISFACTION CAMPAIGN: IN SOME 2025MY ISUZU N-SERIES VEHICLES EQUIPPED WITH 5.2L (4HK1) DIESEL ENGINES, OPERATORS MAY EXPERIENCE AN… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Isuzu, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Isuzu V2403 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 V2403 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 V2403 cover?
The manufacturer filed it against 3 model years: 2022 Isuzu N-Series, 2023 Isuzu N-Series, 2024 Isuzu N-Series. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.