Bentley bulletin 2055664/4
What it saysDTC P14AB00 and/or other related exhaust flap DTC's - Warning lamp evident within the DIP. NHTSA’s full summary ↓
Bentley filed this with NHTSA as a service bulletin dated Jul 16, 2026, received Jul 31, 2026, about the engine. It names 11 model years (2017–2027). 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 communicationDTC P14AB00 and/or other related exhaust flap DTC's - Warning lamp evident within the DIP.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 2055664/4 | Service bulletin | Jul 16, 2026 | 11035380 | PDF, 251 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 model years this site has no page for: 2024 Bentley Redundant Bentayga.
A 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 10 model years this bulletin names have filed 12 complaints with NHTSA since 2015. 3 of them name Engine, Electrical System — 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.
The auto start on this Bentley bentagya most of the time does not work properly, but as I AM now over 12,000 miles it has started to cause the car to call at odd times. For example coming out of a parking space the car stalled leaving me half in and half out the space. It also stalled at a traffic light 3 days ago.
2017 Bentley Bentayga · Engine · filed with NHTSA Sep 2, 2017 · ODI 11021157
climate control intermittently operable. only works half the time. can't regulate the fan control as the touch screen control systems fails to work
2021 Bentley Bentayga · Electrical System · filed with NHTSA Nov 28, 2022 · ODI 11495207
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 group74 other manufacturer communications filed against these Bentley models under the same component group (engine), newest first. The eight newest are listed; the rest are on the Bentley list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| ED95 | Service campaign | Aug 11, 2026 | Subframe Mount Control Unit - Calibration Update | Bentayga Series | 26-27MY (SC26/16) Technical background: On the affected vehicles the cu… |
| 2081085/2 | Service bulletin | Jul 17, 2026 | V8 Engine - Ticking Noise, Misfiring and Possible Low Oil Pressure Indications. Customer statement: The customer may report an audible ticki… |
| 2078190/7 | Service bulletin | Jul 17, 2026 | AC System not Cooling - HVAC Leakage Customer Statement: The customer may find that the A/C system not blowing cold air and / or Cooling per… |
| 2071190/4 | Service bulletin | Jul 17, 2026 | HVAC failing to cool | DTC B16A1F0 in diagnostic address 00C5 | Bentayga Series (Hybrid). |
| 2058484/16 | Service bulletin | Jul 16, 2026 | Bentayga V8 Kovomo - DTC P310B00 with Symptom Code 2638 - Check Engine Lamp - Fuel Pressure Regulation. Customer statement / workshop findin… |
| 2028794/10 | Service bulletin | Jul 16, 2026 | Engine coolant mixture - Restrictions on use of desalinated water. |
| 2075331/5 | Service bulletin | Jul 15, 2026 | Engine light in the DIP - Various oxygen sensor / Fuel ratio DTC’s logged within the Engine Control Module(s). Customer statement / workshop… |
| 2068273/6 | Service bulletin | Jul 15, 2026 | Multiple random misfires evident during PDI. |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Bentley, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Bentley 2055664/4 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 2055664/4 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 2055664/4 cover?
The manufacturer filed it against 11 model years: 2027 Bentley Bentayga, 2026 Bentley Bentayga, 2025 Bentley Bentayga, 2023 Bentley Bentayga, 2022 Bentley Bentayga, 2021 Bentley Bentayga and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.