TSB TSB-26-2359 — Ford Service bulletin
TSB-26-2359 is a service bulletin on file with NHTSA for the Ford Ranger, 2019–2022 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. Some of the vehicles listed in the Model statement above may exhibit an incorrectly illuminated malfunction indicator lamp (MIL) with diagnostic trouble code (DTC) P0420 stored in the powertrain control module (PCM). This may be due to the software in the PCM.
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years TSB-26-2359 names
| Vehicle | Model years |
|---|---|
| Ford Ranger | 2019, 2020, 2021, 2022 |
Every document filed under TSB-26-2359
| Document ID | Filed | Type |
|---|---|---|
| TSB 26-2359 | August 4, 2026 | Service bulletin |
What TSB-26-2359 covers
Transmission & drivetrain, Electrical — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB TSB-26-2359?
TSB-26-2359 is a service bulletin filed with NHTSA by Ford, covering the Ford Ranger across the 2019–2022 model years. NHTSA's summary reads: Some of the vehicles listed in the Model statement above may exhibit an incorrectly illuminated malfunction indicator lamp (MIL) with diagnostic trouble code (DTC) P0420 stored in the powertrain control module (PCM). This may be due to the software in the PCM.
Which vehicles does TSB-26-2359 cover?
NHTSA's file names Ford Ranger (2019–2022). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.
Is TSB TSB-26-2359 a recall, and is the repair free?
No. TSB-26-2359 is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.
How do I get the full text of TSB-26-2359?
Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under TSB-26-2359, its date, and NHTSA's own summary from the public file.
Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under TSB-26-2359. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.