# Service bulletin SSM 52419

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: 10253555
- Published by NHTSA: 2024\-04\-24
- Manufacturer's number: SSM 52419
- Manufacturer's date: 2024\-04\-05
- NHTSA component: POWER TRAIN

## NHTSA's summary

Some 2023\-2024 Escape/Corsair vehicles equipped with a 1.5L or 2.0L EcoBoost engine, 2024 Mustang vehicles equipped with a 2.3L EcoBoost engine, and 2024 Nautilus vehicles may exhibit an engine misfire condition with diagnostic trouble codes \(DTC\) P0301, P0302, P0303 and/or P0304 set in the powertrain control module \(PCM\). If the codes are stored in the PCM, remove and inspect the condition of all the spark plugs. If any spark plugs appear to be damaged, use a borescope to inspect the condition of the cylinder walls. If the cylinder walls are scored/scraped/damaged, replace the long block engine assembly \(6006\) to resolve this condition. If the cylinder walls are not scored/scraped/damaged, replace the damaged spark plug\(s\) and advise the customer that engineering is investigating this issue. Monitor OASIS for additional information and schedule service appointments for customers once the repair becomes available.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-10253555-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-10253555-9999.pdf)

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

## Components

Transmission and driveline

## Trouble codes named

P0301, P0302, P0303, P0304

## Vehicles listed

- 2023 to 2024 FORD ESCAPE
- 2024 FORD MUSTANG
- 2023 to 2024 LINCOLN CORSAIR
- 2024 LINCOLN NAUTILUS

## Recalls for the same vehicles and component

- [2024317](/recalls/tc/2024317.md), 2024-06-04: Powertrain
- [24V394000](/recalls/nhtsa/24V394000.md), 2024-06-03: POWER TRAIN:CLUTCH ASSEMBLY:LINKAGE:HYDRAULIC HOSE/FITTINGS

## Other bulletins for the same vehicles and component

- [SSM 55221](/bulletins/11038438.md), 2026-10-12, Service bulletin: UNKNOWN OR OTHER; POWER TRAIN; ELECTRICAL SYSTEM. For 20222026 vehicles equipped with a 8F35 transmission, a revision to the Road Testing Vehicle procedure has been made in the WSM, Section 307\-01 \> Diagnosis and Testing. This updated procedure improves the diagnosis of customer reported transmission concerns and aids in locating the proper root cause. During diagnosis and testing, details regarding whether the condition is more prevalent when the vehicle is hot or cold, throttle percentage at the time of occurrence, vehicle speed, the specific shift involved, and whether the issue occurs during transmission engagements \(N\>R, N\>D, R\>D, and/or D\>R\) should be noted in the warranty claim. Engineering requests including these detailed operating conditions that will significantly assist with root cause analysis. Diagnosis, testing, and repair should use established labor times outside this article.
- [SSM 55212](/bulletins/11037777.md), 2026-10-02, Service bulletin: POWER TRAIN. Some 2024\-2026 Nautilus vehicles may exhibit a shudder/chatter/vibration from the rear drive unit \(RDU\) during low\-speed turns. Workshop Manual \(WSM\), Section 205\-02 \> Diagnosis and Testing \> Pinpoint Test "Grinding, Popping or Chattering \- Noise from the Rear Axle When the Vehicle is Turning" has been updated to address this condition.
- [TSB 26\-2428](/bulletins/11037776.md), 2026-10-02, Service bulletin: ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM; UNKNOWN OR OTHER; POWER TRAIN. This bulletin supersedes 25\-2326. Reason for update: update the service procedure to include the fuel tank isolation valve replacement, update the causal part number, and increase the labor time allowance to include the fuel tank isolation valve replacement. Some of the vehicles listed in the Model statement above may exhibit an illuminated malfunction indicator lamp \(MIL\) with diagnostic trouble code \(DTC\) P2450 stored in the powertrain control module \(PCM\). This may be due to the software in the PCM and/or the fuel tank isolation valve.
- [TSB 26\-2428](/bulletins/11037775.md), 2026-10-02, Service bulletin: ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM; POWER TRAIN; UNKNOWN OR OTHER. This bulletin supersedes 25\-2326. Reason for update: update the service procedure to include the fuel tank isolation valve replacement, update the causal part number, and increase the labor time allowance to include the fuel tank isolation valve replacement. Some of the vehicles listed in the Model statement above may exhibit an illuminated malfunction indicator lamp \(MIL\) with diagnostic trouble code \(DTC\) P2450 stored in the powertrain control module \(PCM\). This may be due to the software in the PCM and/or the fuel tank isolation valve.
- [TSB 26\-2408](/bulletins/11037559.md), 2026-09-30, Service bulletin: POWER TRAIN. This bulletin supersedes 26\-2309. Reason For Update: update the Model section to remove Aviator 10R80, update the Parts list to add 3.3L to W520514\-S440, and add L1MZ\-7Z490\-G valve body separator plate for Aviator. Some of the vehicles listed in the Model statement above may exhibit at least one of the following conditions: \* Harsh 3\-4, 4\-5 upshifts \* Harsh 5\-3, 4\-3 downshifts \* Harsh reverse engagements These symptoms may be worse when cold. This may be due to the F clutch friction plates brinelling into the clutch and planetary container cylinder \(7B177\).
- [SSM 55142](/bulletins/11037059.md), 2026-09-04, Service bulletin: POWER TRAIN; ENGINE; ELECTRICAL SYSTEM. Some 2023\-2025 Escape vehicles built on or before 16\-Sep\-2024 equipped with 1.5L EcoBoost engine may exhibit an "Engine Coolant Over\-Temperature" warning message displayed in the IPC and an illuminated MIL with DTCs P1285 and/or P1299 stored in the powertrain control module \(PCM\) during hard acceleration or under high load conditions. This may be due to machining chips trapped in the cylinder head causing a potential blockage in the coolant passage near the cylinder head temperature 2 \(CHT2\) port. To diagnose this condition, start the vehicle and idle for 15 minutes. Perform a road test at a temperature above \-20°C \(\-4°F\) and apply wide\-open throttle \(WOT\) hard accelerations in rapid succession. If the concern cannot be replicated, drain and refill the coolant system. If the concern can be replicated, drain the coolant system. Perform the Engine Cooling System Flushing procedure in Workshop Manual \(WSM\) \> 303\-03A Engine Cooling \- 1.5L EcoBoost \> General Procedures. Do not use the VC1 flush additive. Reassemble the engine. Fill and bleed the coolant system and re\-evaluate the concern. If the concern pers
- [SSM 55058](/bulletins/11035516.md), 2026-08-03, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM; ENGINE; FUEL/PROPULSION SYSTEM. Some 2025\-2026 Maverick vehicles built on or before 05\-Dec\-2025 and 2024\-2026 Nautilus vehicles built on or before 04\-Sep\-2025 may exhibit limited power and display "Stop Safely Now" or "Service Vehicle Soon" stored in the message center after start up with diagnostic trouble codes \(DTC\) P0A5D, P0A60, P0A63, P0A6F, P0A72, P0A75, and/or P0E52 stored in the inverter system controller \(SOBDMC\). The Ford Diagnostic and Repair System \(FDRS\) may refer to this module as the "Secondary On\-Board Control Module C". If the vehicle exhibits these conditions, replace the inverter system controller. Refer to Workshop Manual, Section 307\-01B. For claiming, use causal part 7B012 and labor operations 12651D and 12651D58. NOTE: This article does not remove any RVC, Prior Approval or Warranty and Policy requirements for component replacement.
- [TSB 26\-2328](/bulletins/11035099.md), 2026-07-20, Service bulletin: POWER TRAIN; UNKNOWN OR OTHER. This bulletin supersedes 26\-2194. Reason for update: update the Parts list to correct a part description " Loctite 638", update the claim quantity for the drain/fill plug, update the claim quantity of the wheel hub bolts \(Corsair\) and limited the parts list for Edge/Nautilus to only the rear drive unit fluid. Some of the vehicles listed in the Model statement above may exhibit all of the following conditions: Shudder chatter condition, most noticeable at low speeds turning No relevant diagnostic trouble codes \(DTCs\) present This may be due to internal rear drive unit \(RDU\) fluid contamination.
- [TSB 26\-2309](/bulletins/11034224.md), 2026-07-01, Service bulletin: POWER TRAIN. This bulletin supersedes 26\-2241. Reason For Update: update the parts list to correct the claim quantity of the part number JB3Z\-4B496\-B from 3 to 6. Some of the vehicles listed in the Model statement above may exhibit at least one of the following conditions: \* Harsh 3\-4, 4\-5 upshifts \* Harsh 5\-3, 4\-3 downshifts \* Harsh reverse engagements These symptoms may be worse when cold. This may be due to the F clutch friction plates brinelling into the clutch and planetary container cylinder \(7B177\).
- [SSM 54939](/bulletins/11034017.md), 2026-06-22, Service bulletin: POWER TRAIN. Some 2020\-2026 Corsair/Escape, 2021\-2026 Bronco Sport, and 2022\-2026 Maverick vehicles equipped with an 8F35 transmission may exhibit a shudder condition, most noticeable at speeds below 60 mph \(100 km/h\), with no relevant diagnostic trouble codes \(DTC\) stored in the powertrain control module \(PCM\). Sometimes, this may be perceived/felt as an engine misfire. This may be due to the torque converter. If Pinpoint Test K: Torque Converter Clutch Operation in Workshop Manual \(WSM\), Section 307\-01 \> Diagnosis and Testing \> Diagnosis by Symptom directs to replace the torque converter, remove and replace the torque converter and torque converter seal. Refer to WSM, Section 307\-01 \> Removal and Installation \> Torque Converter Seal. Remove the main control valve body. Refer to WSM, Section 307\-01 \> Removal and Installation \> Main Control Valve Body. Overhaul and thoroughly clean the main control valve body. Refer to WSM, Section 307\-01 \> Overhaul \> Main Control Valve Body. Reverse the removal procedure to reassemble the transmission. Install the transmission. Refer to WSM, Section 307\-01 \> Installation. For claim

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