# Service bulletin SSM 49441

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: 10186597
- Published by NHTSA: 2021\-02\-04
- Manufacturer's number: SSM 49441
- Manufacturer's date: 2021\-01\-14
- NHTSA component: POWER TRAIN

## NHTSA's summary

Some 2020\-2021 Super Duty vehicles equipped with an 10R140 automatic transmission may exhibit an illuminated malfunction indicator lamp \(MIL\) and/or powertrain malfunction \(wrench\) indicator lamp with diagnostic trouble codes \(DTCs\) P0715, P0716, P0717, P0718, P07BF and/or P07C0 stored in the powertrain control module \(PCM\). If any of these DTCs are set, focus diagnostics on the turbine shaft speed sensor \(TSS\) and/or TSS circuits. Refer to Workshop Manual \(WSM\), Section 307\-01. Replacement of the ISSA or ISSB sensor will not correct this condition.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10186597-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10186597-9999.pdf)

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

## Components

Transmission and driveline

## Trouble codes named

P0715, P0716, P0717, P0718, P07BF, P07C0

## Vehicles listed

- 2020 to 2021 FORD F\-250 SD
- 2020 to 2021 FORD F\-350 SD
- 2020 FORD F\-450 SD
- 2020 FORD F\-550 SD

## Recalls for the same vehicles and component

- [2022193](/recalls/tc/2022193.md), 2022-04-14: Powertrain
- [22V256000](/recalls/nhtsa/22V256000.md), 2022-04-14: POWER TRAIN:AUTOMATIC TRANSMISSION
- [2022074](/recalls/tc/2022074.md), 2022-02-17: Powertrain
- [22V087000](/recalls/nhtsa/22V087000.md), 2022-02-16: STRUCTURE:FRAME AND MEMBERS:UNDERBODY SHIELDS; POWER TRAIN:DRIVELINE:DRIVESHAFT
- [2021437](/recalls/tc/2021437.md), 2021-07-16: Powertrain
- [21V536000](/recalls/nhtsa/21V536000.md), 2021-07-15: POWER TRAIN:AXLE ASSEMBLY
- [21V390000](/recalls/nhtsa/21V390000.md), 2021-05-25: POWER TRAIN:AXLE HUBS
- [20V365000](/recalls/nhtsa/20V365000.md), 2020-06-23: POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER; POWER TRAIN:AUTOMATIC TRANSMISSION
- [20V099000](/recalls/nhtsa/20V099000.md), 2020-02-21: POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT; POWER TRAIN:DRIVELINE:DRIVESHAFT

## Other bulletins for the same vehicles and component

- [SSM 55218](/bulletins/11038166.md), 2026-10-06, Service bulletin: POWER TRAIN; UNKNOWN OR OTHER. For 20202026 vehicles equipped with the 10R140 transmission, a new Transmission Clutch Circuit Leak Test has been introduced in the Ford Diagnosis and Repair System \(FDRS\). This test utilizes the pressure and vacuum transducer \(PVT\) when available. Workshop Manual \(WSM\) updates related to this diagnostic procedure are planned for release in Q4 2026. The new test improves the accuracy of detecting leaks within transmission fluid circuits and replaces the previous air check method. The previous air check procedure has been shown to produce a high rate of false positives, which may lead to unnecessary repairs when no actual leak is present. Accordingly, the air check procedure is not to be used for diagnosing internal transmission hydraulic leaks or as justification for transmission replacement.
- [TSB 26\-2088 v2](/bulletins/11037979.md), 2026-10-05, Service bulletin: UNKNOWN OR OTHER; POWER TRAIN. This bulletin supersedes 24\-2249. Reason for update: update the claim quantity of the torque converter nuts, part number and claim quantity of the front support assembly bolt washers, and part number change of the fluid pan from the Parts List. Reissued 01\-Oct\-2026 \- Added LC3Z\-7G091\-B to the part list
- [TSB 26\-2216](/bulletins/11032694.md), 2026-05-14, Service bulletin: POWER TRAIN. This bulletin supersedes 25\-2549. Reason for update: To add 2020 model year chassis cab vehicles. Some of the vehicles listed in the Model statement above may exhibit an incorrectly illuminated malfunction indicator lamp \(MIL\) with diagnostic trouble codes \(DTC\) P0420 and/or P0430 stored in the powertrain control module \(PCM\). This may be due to the software in the PCM. This condition does not affect vehicle drivability or durability.
- [TSB 26\-2088](/bulletins/11029923.md), 2026-03-10, Service bulletin: POWER TRAIN. This article supersedes TSB 24\-2249 to update the claim quantity of the torque converter nuts, part number and claim quantity of the front support assembly bolt washers, and part number change of the fluid pan from the Parts List. Some of the vehicles listed in the Model statement above may exhibit a harsh reverse to drive engagements with no diagnostic trouble codes \(DTC\). This may be due to sticking valves in the main control valve body and/or damaged input shaft seals \(F9\), and the output shaft seals \(F10\). Additional model information: Built On Or Before 13\-Dec\-2021 10R140 Automatic Transmission
- [25N10](/bulletins/11029724.md), 2026-03-05, Other: POWER TRAIN; UNKNOWN OR OTHER. Certain 2017\-2025 F\-450 – F\-600 Super Duty Chassis Cab Upfitted with an Aerial Bucket Frame Rail Crack
- [SSM 54592](/bulletins/11029081.md), 2026-02-27, Service bulletin: POWER TRAIN. For 20172026 vehicles equipped with a 10R transmission, a revision to the Road Testing Vehicle procedure has been made in the WSM, located in 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 \(N\>R, N\>D, R\>D, or D\>R\) should be noted. 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.
- [TSB 25\-2572](/bulletins/11025854.md), 2025-12-01, Service bulletin: POWER TRAIN; ENGINE. This article supersedes TSB 25\-2322 to update the Service Procedure, Labor Operations and Parts List. Some of the vehicles listed in the Model statement above may exhibit an upper engine ticking or tapping noise at idle. Customers may also report experiencing rough engine performance, engine misfire, or a malfunction indicator lamp \(MIL\) with diagnostic trouble code \(DTC\) P0301\-P0308 in the powertrain control module \(PCM\). This may be due to camshaft and/or valve tappet having excess wear within the engine assembly.
- [TSB 25\-2549](/bulletins/11025529.md), 2025-11-13, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM. This article supersedes TSB 25\-2119 to update the vehicles affected, parts list, and Service Procedure. Some of the vehicles listed in the Model statement above may exhibit an incorrectly illuminated malfunction indicator lamp \(MIL\) with diagnostic trouble codes \(DTC\) P0420 and/or P0430 stored in the powertrain control module \(PCM\). This may be due to the software in the PCM. This condition does not affect vehicle drivability or durability.
- [SSM 54363](/bulletins/11025526.md), 2025-11-13, Service bulletin: UNKNOWN OR OTHER; POWER TRAIN; ENGINE. Some 2021\-2025 Expedition/Navigator/F\-150/F\-Super Duty/F\-53 Motorhome/F59 Commercial Stripped Chassis/F\-650/F\-750/Transit vehicles equipped with a 2.7L/3.5L \(non hybrid\)/6.8L/7.3L engine and 2021\-2026 E\-Series may exhibit a rattle/scraping noise from the bellhousing area on start\-up. Workshop Manual \(WSM\), Section 303\-00 Engine System \- General Information \> Diagnosis and Testing and 303\-06 \> Starting System has been updated to address this condition. Additionally, WSM, Section 303\-01 \> Removal and Installation \> Engine to Transmission Spacer Plate has been added to address this condition. Refer to the revised WSM sections for normal diagnosis.
- [SSM 54338](/bulletins/11024900.md), 2025-11-04, Service bulletin: POWER TRAIN. Some 2021\-2025 F\-150 vehicles equipped with a 5.0L/5.2L engine, 2021\-2025 F\-Super Duty/F\-53 Motorhome/F59 Commercial Stripped Chassis vehicles equipped with a 6.8L/7.3L engine and 2021\-2026 E\-Series/F\-650/F\-750 vehicles equipped with a 7.3L engine may exhibit a rattle/scraping noise upon startup that may remain after the engine is running. This may be due to the starter motor drive gear not retracting after starting. To correct this condition, inspect the starter motor drive gear and shaft. If the starter motor drive gear slides back and forth by hand and/or shows signs of scoring or damage, replace the starter motor following Workshop Manual \(WSM\), Section 303\-06 Starting System \> Removal and Installation \> Starter.

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