Chrysler bulletin 21-037-26
What it saysInternal Transmission Wiring Connector Short And Motor A Bearing Failure Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic… NHTSA’s full summary ↓
Chrysler filed this with NHTSA as a service bulletin dated May 2, 2026, received May 6, 2026, about the power train. It names 2 model years (2024–2025). 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 communicationInternal Transmission Wiring Connector Short And Motor A Bearing Failure Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0A3F-00 - Drive Motor A Position Sensor 1 Circuit. ● P0A43-00 - Drive Motor A Position Sensor Circuit Intermittent. ● P0A45-00 - Drive Motor B Position Sensor 1 Circuit. ● P0C1A-00 - Drive Motor B Torque Delivered Performance. Customers may also comment on the following: ● Vehicle is in limp mode This bulletin involves rebuilding the transmission
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 21-037-26 | Service bulletin | May 2, 2026 | 11032330 | not found |
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 2 model years this bulletin names have filed 98 complaints with NHTSA since 2015. 27 of them name 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.
Vehicle loses power and goes into limp mode. This has happened three times same fault code. The last two times we were going 80 on the expressway. Very dangerous luckily we haven't caused a accident. The manufacturer hasn't fixed the problem. Even though we keep taking it to the dealer.
2024 Chrysler Pacifica · Power Train · filed with NHTSA Aug 28, 2025
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 power train
Source: same model, same component group21 other manufacturer communications filed against the Chrysler Pacifica under the same component group (power train), newest first. The eight newest are listed; the rest are on the Chrysler list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 21-060-26 | Service bulletin | Sep 18, 2026 | Check Engine Light On and Transmission Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTO… |
| S2508000052 REV. B | Service bulletin | Jun 18, 2026 | Service Shifter Message on the Cluster and Shifter Unable to move Out of Park |
| 18-027-26 | Service bulletin | Feb 26, 2026 | Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further invest… |
| 18-026-26 | Service bulletin | Feb 26, 2026 | Flash: Powertrain Control Module (PCM) Updates **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle m… |
| 21-014-26 | Service bulletin | Feb 5, 2026 | Internal Transmission Wiring Connector Short And **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle… |
| 109997 | Service bulletin | Feb 3, 2026 | ACTUATOR - TRANSFER CASE |
| 18-095-25 | Service bulletin | Nov 12, 2025 | Flash: Powertrain Control Module (PCM) Updates *Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle mu… |
| 18-094-25 | Service bulletin | Nov 12, 2025 | Flash: Powertrain Control Module (PCM) Updates *Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle mu… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Chrysler, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Chrysler 21-037-26 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 21-037-26 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 21-037-26 cover?
The manufacturer filed it against 2 model years: 2025 Chrysler Pacifica, 2024 Chrysler Pacifica. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.