Key facts
- Campaign: NHTSA recall 26V237 / Ford recall 26S28. Filed April 14, 2026; approved by Ford's Field Review Committee April 7, 2026.
- Population: 1,392,935 Ford F-150 trucks (Ford build-record count). The predecessor Engineering Analysis EA26001 cited 1,270,970.
- Vehicles: 2015-2017 F-150 with the 6R80 6-speed automatic only, built March 12, 2014 - August 18, 2017. The 10R80 10-speed (some 2017s) is not in scope.
- Defect: In-service degradation of electrical connections in the transmission lead frame causes the Powertrain Control Module (PCM) to misread the Transmission Range Sensor (TRS), triggering an unintended downshift, worst case 6th-to-2nd gear at 35-64 mph.
- Risk: Abrupt wheel-speed reduction can make the rear tires slide/skid, risking loss of control. A separate TRS signal-loss path can shift to neutral and, when reversing up an incline, cause a rollaway.
- Warning sign: In some cases the malfunction indicator light (MIL) / wrench light may illuminate.
- Remedy: Free PCM software reflash; lead-frame replacement under extended warranty if certain diagnostic codes were logged first.
- No "do not drive" or "park outside" order applies — those boxes on the Part 573 form are unchecked.
- Schedule: Dealer notification April 15, 2026; VINs searchable in NHTSA lookup from April 15, 2026; interim owner letters April 27 - May 1, 2026; remedy (software-ready) owner letters July 13-17, 2026.
- Estimated percent with defect: 1%. Ford parts/recall line: 1-866-436-7332.
Is the 2015-2017 F-150 transmission problem a recall now, or still an investigation?
It is a recall. Ford filed NHTSA Part 573 Safety Recall Report 26V237 (Ford 26S28) on April 14, 2026, after its Field Review Committee approved the field action on April 7, 2026. Earlier coverage that framed this as an open investigation with "no fix" is now out of date.
The path to the recall: NHTSA's Office of Defects Investigation opened Preliminary Evaluation PE25002 on March 21, 2025, then upgraded it to Engineering Analysis EA26001 on January 30, 2026 (widely reported around February 2, 2026). The recall followed in April 2026. As of June 19, 2026, the interim owner notice has gone out, but the final remedy software mailing (July 13-17, 2026) has not yet begun.
Which 2015-2017 F-150 trucks are actually affected?
Only 2015-2017 F-150s equipped with the 6R80 6-speed automatic, built between March 12, 2014 and August 18, 2017. All 2015 and 2016 F-150 automatics used the 6R80. For 2017, the truck was in transition: it could have either the 6R80 or the newer 10R80 10-speed, and only the 6R80 trucks are covered.
| Model | Model years | Transmission in scope | Status | Campaign |
|---|---|---|---|---|
| Ford F-150 | 2015, 2016 | 6R80 6-speed (all 2015-16 automatics) | Recalled | 26V237 / 26S28 |
| Ford F-150 | 2017 | 6R80 6-speed only | Recalled | 26V237 / 26S28 |
| Ford F-150 | 2017 (10R80-equipped) | 10R80 10-speed | Not in scope | Excluded |
The recall count (1,392,935) is larger than the Engineering Analysis count (1,270,970) because Ford defined the recall population by build records rather than the analysis estimate. Both refer to the same 6R80 6-speed trucks; the figures are not a conflict.
Is the 10-speed (10R80) F-150 affected, or only the 6-speed (6R80)?
Only the 6-speed 6R80. Recall 26V237 and Engineering Analysis EA26001 are explicitly limited to the 6R80 6-speed automatic. The 10R80 10-speed, offered on some 2017 F-150s, is excluded from both the analysis and the recall. Some early secondary coverage referenced the 10R80; per the primary NHTSA documents, that is incorrect for this campaign.
What exactly goes wrong, and is it dangerous?
Over extended service, thermal cycling and vibration degrade the electrical connections inside the transmission lead frame. That degradation can make the PCM momentarily read an incorrect Transmission Range Sensor signal, which can command a temporary, unintended downshift, worst case 6th-to-2nd gear at 35-64 mph per Ford's shift map.
The safety risk is real: an abrupt drop in wheel speed can cause the rear tires to slide or skid until vehicle speed falls, which can lead to loss of control and a crash. NHTSA's Vehicle Research Test Center also identified a separate path in which intermittent TRS signal loss shifts the truck to neutral; if the truck is reversing up an incline when this happens, it can change direction and roll forward (a rollaway risk). In some cases the malfunction indicator light or wrench light may illuminate as a warning.
On the failure tallies: EA26001's opening resume cited 999 total incidents, with one crash/fire and 0 injuries / 0 fatalities reported in that resume. The more recent recall report (26V237, figures as of April 2, 2026) states Ford was aware of two injuries and one accident potentially related, alongside 444 warranty claims, 121 field reports, 105 customer service reports, and 316 VOQs across 891 VINs. The recall report's injury and accident figures are Ford's own and are the more recent count.
How is this different from the older 2011-2014 F-150 transmission recalls?
This is a separate defect from the earlier downshift recalls. The 2011-2014 F-150 6R80 recalls (16V248 and 19V075 for 2011-2013; 19V433 and 24V444/24S37 for 2014) were caused by Output Shaft Speed (OSS) sensor signal loss — a solder-joint/supplier production issue — and could cause a more severe 6th-to-1st downshift.
The 2015-2017 issue is caused by Transmission Range Sensor (TRS) signal loss from in-service lead-frame connection degradation, producing a 6th-to-2nd downshift. Both involve the transmission lead frame and both produce a downshift symptom, but they are distinct defects with different root causes and different affected build periods.
Is the recall fix free, and what does it involve?
Yes, the remedy is free. Dealers reprogram the PCM with updated calibrations (FL3A-14C204-, GL3A-14C204-, HL3A-14C204-*) so the control system has more time to recognize a failing TRS before commanding a downshift. If a truck previously logged certain related diagnostic trouble codes before the software is installed, the dealer will replace the lead frame under the corresponding extended warranty program, also at no charge.
Importantly, no "Do Not Drive" or "Park Outside" order applies — both boxes are unchecked on the official Part 573 form, despite some secondary reports that claimed otherwise. Remedy (software-ready) owner letters are scheduled to mail July 13-17, 2026, in phases, so as of mid-June 2026 the fix may not yet be available at every dealer.
How do I check a specific used F-150 by VIN before buying?
Start with the free, authoritative sources, then layer in history. To confirm whether recall 26V237 is open on a specific truck, use NHTSA's VIN lookup at nhtsa.gov/recalls (VINs searchable from April 15, 2026) and Ford Owner Support or the 26S28 page; a Ford/Lincoln dealer can confirm remedy status via OASIS at 1-866-436-7332.
A vehicle history report, such as a Zilocar VIN check, is a useful companion here. It can surface recall presence/count (the same screening NHTSA's free tool provides), plus accident and damage records, odometer/rollback checks, salvage-auction records, theft data, ownership count, and sales-listing history — the records that matter most at the curb on a high-mileage truck. Because this defect worsens with mileage and age, verifying the true odometer reading is especially valuable.
What a VIN check can and can't tell you here
A VIN check is strong on history and recall screening, but it cannot confirm repair or investigation status. Use it for the history; rely on NHTSA and a Ford dealer for whether the recall was actually performed.
| A VIN history check CAN show | A VIN check CANNOT show (use NHTSA/Ford) |
|---|---|
| Recall presence/count (e.g., whether 26V237 appears) | Whether 26V237 was remedied/flashed (open vs. closed) |
| Accident & damage records, severity, airbag deployment | That a specific truck has or lacks the defect |
| Odometer / rollback check | Whether the PCM was recalibrated or lead frame replaced |
| Salvage & junk auction records, theft (NICB) | The legal title-brand classification |
| Ownership history and count | NHTSA investigation tracking (PE25002 / EA26001) |
| Sales-listing history (prices, mileage, days-on-market) | Per-unit dealer firmware/remedy detail |
A sudden-downshift or rear-wheel-lockup event will not be labeled a "transmission" event in any report. At most it could plausibly surface as a low-speed loss-of-control, skid, or rear-end accident record — possible, not guaranteed. Treat such records as a reason to ask the seller and a dealer more questions, not as proof the defect occurred.
What to ask the seller and the dealer
Ask the seller whether the truck has the 6R80 6-speed or the 10R80 10-speed (only the 6R80 is covered), whether they have received the recall owner letter, and whether any transmission, lead-frame, or valve-body work has been done. Then confirm with a Ford dealer using the VIN whether recall 26V237 is open or completed. If the truck is a 2017, confirming the transmission settles whether it is in scope at all. On price, the open recall and the defect's tendency to worsen with mileage are reasonable points to raise, but the remedy is free, which limits the cost argument.
