Jaguar bulletin H444 ER V1
What it saysCertain 2017 to 2019MY Jaguar vehicles equipped with Ingenium I4 2.0L Diesel engines, when connected to a diagnostic scan tool during the California SMOG test, the Powertrain Control Module (PCM) incorrectly reports… NHTSA’s full summary ↓
Jaguar filed this with NHTSA as a service bulletin dated Feb 26, 2024, received Mar 8, 2024, about the engine. It names 8 model years (2017–2019). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
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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.
Certain 2017 to 2019MY Jaguar vehicles equipped with Ingenium I4 2.0L Diesel engines, when connected to a diagnostic scan tool during the California SMOG test, the Powertrain Control Module (PCM) incorrectly reports the monitor readiness status as not supported.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| H444 ER V1 | Service bulletin | Feb 26, 2024 | 10251536 | PDF, 167 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 themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 8 model years this bulletin names have filed 63 complaints with NHTSA since 2015. 24 of them name Engine, Power Train — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
I own a 2018 Jaguar E-PACE that recently failed the Virginia state safety inspection due to a problem involving the fuel system/fuel rail. The vehicle and affected components are available for inspection upon request. The primary symptom was a strong smell of raw gasoline. There were no warning lights or messages on the dashboard.
2018 Jaguar E-Pace · Engine · filed with NHTSA Sep 14, 2026 · ODI 11764006
My 2019 Jaguar E-PACE is showing code P26CB related to coolant pump performance. The vehicle is experiencing the same coolant/water pump failure symptoms reported in similar Jaguar vehicles, but my VIN was excluded from coverage. This issue creates risk of overheating, engine damage, and possible loss of power while driving.
2019 Jaguar E-Pace · Power Train · filed with NHTSA May 8, 2026 · ODI 11736462
On May 2, 2026, ten days after purchasing the vehicle, the driver‑side seatbelt locking mechanism failed while I was driving. The vehicle was inspected the next day at CarMax Tuscaloosa. Their mechanic confirmed two separate safety defects: 1. The driver‑side seatbelt mechanism requires replacement. 2.
2017 Jaguar XF · Engine · filed with NHTSA May 7, 2026 · ODI 11736294
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the engine
Source: same model, same component group14 other manufacturer communications filed against these Jaguar models under the same component group (engine), newest first. The eight newest are listed; the rest are on the Jaguar list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| H490v3 - 01MAY26 | Service bulletin | May 1, 2026 | Arduous customer drive cycles have been found to accelerate the degradation of engine oil, leading to generation of engine oil sludge deposi… |
| SSM000017-19DEC25 | Other | Dec 20, 2025 | Coolant fan may continue running at high speed after ignition shut-off |
| H490v2 - 09APR25 | Service bulletin | Apr 9, 2025 | Engine Oil and Filter Change |
| SFCC_FEB2025_46 | Other | Feb 13, 2025 | Low engine coolant lamp warning on instrument panel and/or coolant leak at expansion tank cap. |
| SFCC_FEB2025_45 | Other | Feb 13, 2025 | Low engine coolant lamp warning on instrument panel and/or coolant leak. |
| SSM76258 | Other | Feb 4, 2025 | Coolant Loss Through Engine Coolant Expansion Tank Cap |
| SSM76257ATT3 | Other | Feb 3, 2025 | Thermostat Housing Engine Coolant Leak |
| SSM76257ATT2 | Other | Feb 3, 2025 | Thermostat Housing Engine Coolant Leak |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Jaguar, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Jaguar H444 ER V1 a recall?
No. A service bulletin 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, or on its page here.
Is the H444 ER V1 repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way.
Which vehicles does H444 ER V1 cover?
The manufacturer filed it against 8 model years: 2019 Jaguar E-Pace, 2018 Jaguar E-Pace, 2019 Jaguar XE, 2018 Jaguar XE, 2017 Jaguar XE, 2019 Jaguar XF and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.