# Service bulletin TSB 25\-2428

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 11023197
- Published by NHTSA: 2025\-09\-18
- Manufacturer's number: TSB 25\-2428
- Manufacturer's date: 2025\-09\-10
- NHTSA component: ENGINE

## NHTSA's summary

This article supersedes TSB 25\-2063 to update the Service Procedure. Some of the vehicles listed in the Model statement above may exhibit a loss of engine coolant from a leak at the coolant pump. This may be due to contamination in the engine's cooling system.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11023197-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11023197-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine

## Vehicles listed

- 2021 to 2024 FORD BRONCO SPORT

## Recalls for the same vehicles and component

- [2025376](/recalls/tc/2025376.md), 2025-07-14: Engine
- [2025134](/recalls/tc/2025134.md), 2025-03-14: Engine
- [2022152](/recalls/tc/2022152.md), 2022-03-29: Engine
- [22V191000](/recalls/nhtsa/22V191000.md), 2022-03-25: ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION

## Other bulletins for the same vehicles and component

- [25B51](/bulletins/11033577.md), 2026-06-05, Other: ENGINE. Certain 2021\-2024 Model Year Bronco, 2021\-2024 Model Year Bronco Sport, 2020\-2022 Model Year Corsair and Escape, 2016\-2024 Model Year Explorer, 2019\-2020 Model Year Fusion, 2016\-2018 Model Year Focus RS, 2022\-2024 Model Year Maverick, 2016\-2019 Model Year MKC and 2019\-2024 Model Year Ranger Vehicles Equipped with a 2.0L or 2.3L Engine and Engine Block Heater System Block Heater Replacement
- [SSM 54593](/bulletins/11029082.md), 2026-02-27, Service bulletin: ENGINE; POWER TRAIN; FUEL/PROPULSION SYSTEM. Some 2024\-2025 F\-150, Expedition/Navigator, Escape/Corsair, Bronco, Explorer, Mustang, Maverick vehicles equipped with a 1.5/2.0/2.3/3.5L EcoBoost engine and built on 01\-Oct\-2024 and through 31\-May\-2025 may exhibit an extended crank condition, strong fuel smell in the engine oil, high engine oil level and/or may have various drivability diagnostic trouble codes \(DTCs\) stored in the powertrain control module \(PCM\) with an illuminated malfunction indicator lamp \(MIL\). This may be due to an internal fuel leak of the high\-pressure fuel pump causing fuel to enter the crankcase and reduce fuel pressure in the direct injection fuel rail. Diagnose this condition using Pinpoint Test HP located in Workshop Manual \(WSM\), Section 303\-04. If no DTCs are stored in the PCM, proceed from Step HP1 to Step HP5 and continue testing. Repair as necessary outside of this article. For claiming, if high\-pressure fuel pump replacement is required, use causal part number 9D376 and labor operation code 9543A. If the root cause is identified as anything other than the fuel injection pump, claim the repair outside of this article.
- [25M02](/bulletins/11026929.md), 2026-01-05, Other: ENGINE; FUEL/PROPULSION SYSTEM; UNKNOWN OR OTHER. Customer Satisfaction Program 25M02 Certain 2021\-2024 Model Year Bronco Sport and 2020\-2022 Escape with 1.5L Engine and 8F35 Transmission Upstream Catalytic Converter Replacement, If Required
- [TSB 25\-2581](/bulletins/11026504.md), 2025-12-09, Service bulletin: FUEL/PROPULSION SYSTEM; ENGINE. This article supersedes TSB 25\-2511 to update the Service Procedure and Parts List. Some of the vehicles listed in the Model statement above may exhibit a loss of engine coolant from a leak at the coolant pump. This may be due to contamination in the engine's cooling system.
- [25N03](/bulletins/11024932.md), 2025-11-04, Other: ENGINE. Customer Satisfaction Program 25N03 Certain 2021\-2023 Model Year Bronco Sport and 2020\-2022 Escape with 1.5L Engine and 8F35 Transmission. One\-Time Catalytic Converter Replacement, If Required
- [TSB 25\-2511](/bulletins/11024520.md), 2025-10-28, Service bulletin: ENGINE. This article supersedes TSB 25\-2428 to update the Parts List. Some of the vehicles listed in the Model statement above may exhibit a loss of engine coolant from a leak at the coolant pump. This may be due to contamination in the engine's cooling system.
- [25H03](/bulletins/11023856.md), 2025-10-03, Other: UNKNOWN OR OTHER; ENGINE. Harvest Program 25H03 Certain 2024 \- 2025 Model Year Bronco, Bronco Sport, Corsair, Escape, Explorer, Maverick, Mustang, and Ranger Vehicles with 1.5L, 2.0L, or 2.3L Engine Spark Plug Replacemen
- [25B33](/bulletins/11023853.md), 2025-10-03, Other: ENGINE. Certain 2023\-2025 Model Year Escape and Corsair, 2024\-2025 Nautilus, 2025 Bronco Sport and Maverick Vehicles Originally Equipped with an Engine Block Heater System Block Heater Element Installation
- [25H03](/bulletins/11022299.md), 2025-09-02, Other: ELECTRICAL SYSTEM; ENGINE. Certain 2024 \- 2025 Model Year Bronco, Bronco Sport, Corsair, Escape, Explorer, Maverick, Mustang, and Ranger Vehicles with 1.5L, 2.0L, or 2.3L Engine Spark Plug Replacement
- [SSM 53973](/bulletins/11020044.md), 2025-07-02, Service bulletin: POWER TRAIN; ENGINE. Some 2021\-2024 Edge/Nautilus, 2021\-2025 Bronco/Bronco Sport/E\-Series/Escape/Corsair/Expedition/Navigator/Explorer/Aviator/F\-150/F\-Super Duty/Mustang/Ranger, and 2022\-2025 Maverick vehicles may require an A/C compressor clutch assembly replacement be performed for various concerns. Workshop Manual \(WSM\), Section 412\-00 Removal and Installation has been updated to eliminate the need to remove and install the A/C compressor to change out the A/C Compressor clutch assembly.

JSON: [/v1/bulletins/11023197](/v1/bulletins/11023197)

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