Infiniti bulletin P4A05, P4A06
What it says***** Retailer Announcement ***** INFINITI is committed to providing the highest levels of product quality and customer satisfaction. NHTSA’s full summary ↓
Infiniti filed this with NHTSA as a service bulletin dated Feb 4, 2025, received Feb 10, 2025, about the engine. It names 5 model years (2016–2018). 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 communicationPicked out of NHTSA’s summary below, word for word. The document itself is the record, and the dealer checks the VIN.
***** Retailer Announcement ***** INFINITI is committed to providing the highest levels of product quality and customer satisfaction. Therefore, INFINITI is conducting a warranty extension to Full Useful Life (FUL) of 10 years or 120,000 miles, whichever occurs first, if white smoke or oil leak occurs with MIL-On condition that requires replacement of the turbocharger assembly on model year 2016-2018 Q50 and model year 2017-2018 Q60. All other warranty terms, limitations, and conditions remain unchanged. On some model year 2016-2018 INFINITI Q50 and 2017-2018 Q60 vehicles there is a possibility that the turbocharger bearing may leak engine oil internally due to premature wear. The internal turbocharger oil leak may cause one or more of the following: Excessive smoke from the exhaust, Service Engine Soon (MIL) light and in severe cases, lack of engine power or damage to the internal components of the turbocharger. During the limited emission warranty extension period, owners are eligible for free replacement of the Turbocharger if it is determined to be required by an INFINITI trained technician. Owners of eligible vehicles will receive notification of this limited emission warranty extension during February 2025. ***** What Retailers Should Do ***** 1. Verify if vehicles are eligible for this Warranty Extension using the warranty extension page of Service Comm. Then, proceed with the instructions in item (2) below. 2. If a client contacts the retailer with a Turbocharger concern in an owned or leased vehicle, retailers should use the Electronic Service Manual (ESM) and appropriate Technical Service Bulletins (TSB) to diagnose the root cause of the customer concern and identify the correct repair to resolve the customer concerns. NOTE: Retailers will need to follow the warranty process and obtain pre-approval when the repair cost exceeds a Retailer’s Claims Administration/Authorization Limits (DCAL). CONFIRM: With the vehicle at operating temperature excessive smoke from exhaust, the Service Engine Soon (MIL) light on (with DTC P0106) due to excessive oil in the intake system from a turbocharger, or other damage to the turbocharger due to unusual bearing P4A05/P4A06 | Original Document wear and oil leakage. Proceed to replace the affected turbocharger(s) and update the vehicle to the latest engine software.
Trouble codes it names: P0106
One of the 432 warranty extensions and special-coverage programs on file — every make, with the term each runs to.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| P4A05, P4A06 | Service bulletin | Feb 4, 2025 | 11014069 | PDF, 159 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 5 model years this bulletin names have filed 205 complaints with NHTSA since 2015. 63 of them name Engine — 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.
While driving home, I experienced an extreme amount of white smoke coming from my exhaust. The smoke was so severe that I could barely see vehicles behind me. Because I was on the freeway and concerned about my safety and the safety of others, I pulled over when safe and had the vehicle towed home and then to an Infiniti dealership for…
2018 Infiniti Q60 · Engine · filed with NHTSA Aug 22, 2026 · ODI 11758695
The car needed new sprockets after 105K miles. I haven't seen anyone else have this problem, so my car maybe a lemon. But just in case more people start reporting it, I just want to make sure it's on record. The dealership has no idea why they'd fail, as I have had regular, full synthetic oil changes. It's a hefty repair
2017 Infiniti Q50 · Engine · filed with NHTSA Nov 17, 2022 · ODI 11494052
Internal engine mechanical issues, infiniti of bridgewater diagnosis. The engine cut off midway while driving on the highway. Vehicle received an engine replacement 1-2 years ago from Infiniti of edison (ray catena) who were shut down after the replacement. There was absolutely no warnings or problems before hand
2016 Infiniti Q50 · Engine · filed with NHTSA Dec 1, 2023 · ODI 11557870
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 group6 other manufacturer communications filed against these Infiniti models under the same component group (engine), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| ITB22-038D | Service bulletin | Feb 4, 2025 | TURBOCHARGER REPLACEMENT PROCEDURE APPLIED ENGINES: VR30DDTT IF YOU CONFIRM One or both turbochargers require replacement. ACTION 1. Replace… |
| ITB17-050C | Service bulletin | Feb 4, 2025 | MIL ON WITH DTC(S) STORED IN THE ECM This bulletin is no longer active. Please discard previous versions of ITB17-050. |
| ITB22-038C | Service bulletin | Nov 6, 2023 | TURBOCHARGER REPLACEMENT PROCEDURE This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versi… |
| ITB22-038B | Service bulletin | Aug 4, 2023 | TURBOCHARGER REPLACEMENT PROCEDURE This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versi… |
| REV2 R22D1 Q50_Q | Service bulletin | Jun 14, 2023 | ISS Reprogram Voluntary Emission Recall Campaign REVISED June 14, 2023 Please discard earlier versions of this bulletin. The announcem… |
| REV1 R22D1 Q50_Q | Service bulletin | Jun 10, 2023 | ISS Reprogram Voluntary Emission Recall Campaign REVISED June 10, 2023 Please discard earlier versions of this bulletin. The announcem… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Infiniti, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Infiniti P4A05, P4A06 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 P4A05, P4A06 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 P4A05, P4A06 cover?
The manufacturer filed it against 5 model years: 2018 Infiniti Q50, 2017 Infiniti Q50, 2016 Infiniti Q50, 2018 Infiniti Q60, 2017 Infiniti Q60. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.