# Service bulletin TSB 21\-2423

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: 10205528
- Published by NHTSA: 2022\-01\-01
- Manufacturer's number: TSB 21\-2423
- Manufacturer's date: 2021\-12\-01
- NHTSA component: POWER TRAIN

## NHTSA's summary

Some 2018\-2021 Expedition/Navigator, 2018\-2020 F\-150/Mustang and 2019\-2021 Ranger vehicles equipped with a 10R80 automatic transmission may exhibit an illuminated malfunction indicator lamp \(MIL\) with diagnostic trouble code \(DTC\) P163E stored in the powertrain control module \(PCM\) or transmission control module \(TCM\) after replacing the main control valve body. This may be due to software incompatibility between the replacement main control valve body solenoid strategy file and the PCM/TCM software. To correct this condition, follow the Service Procedure to obtain a new main control valve body with a new strategy number.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10205528-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10205528-9999.pdf)

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

## Components

Transmission and driveline

## Trouble codes named

P163E

## Vehicles listed

- 2018 to 2021 FORD EXPEDITION
- 2018 to 2020 FORD F\-150
- 2018 to 2021 FORD MUSTANG
- 2019 to 2021 FORD RANGER
- 2018 to 2021 LINCOLN NAVIGATOR

## Recalls for the same vehicles and component

- [2026311](/recalls/tc/2026311.md), 2026-06-24: Powertrain
- [26V402000](/recalls/nhtsa/26V402000.md), 2026-06-24: POWER TRAIN:AUTOMATIC TRANSMISSION
- [2026280](/recalls/tc/2026280.md), 2026-06-09: Powertrain
- [26V375000](/recalls/nhtsa/26V375000.md), 2026-06-09: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\)
- [2025707](/recalls/tc/2025707.md), 2025-12-18: Powertrain
- [22V382000](/recalls/nhtsa/22V382000.md), 2022-05-27: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\)
- [2020203](/recalls/tc/2020203.md), 2020-05-11: Powertrain
- [20V263000](/recalls/nhtsa/20V263000.md), 2020-05-08: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION \(PRNDL\)
- [2020144](/recalls/tc/2020144.md), 2020-04-06: Powertrain
- [20V197000](/recalls/nhtsa/20V197000.md), 2020-04-03: POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION \(PRNDL\)

## Other bulletins for the same vehicles and component

- [25E10\-S1](/bulletins/11037788.md), 2026-10-02, Other: ELECTRICAL SYSTEM; UNKNOWN OR OTHER; POWER TRAIN. 25E10\-S1 Owner letter
- [TSB 26\-2359](/bulletins/11036074.md), 2026-08-10, Service bulletin: ELECTRICAL SYSTEM; UNKNOWN OR OTHER; POWER TRAIN. 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.
- [TSB 26\-2226](/bulletins/11032697.md), 2026-05-14, Service bulletin: POWER TRAIN. This bulletin supersedes 26\-2046. Reason For Update: update the parts list to change the claim quantity of the C clutch friction plates \(HL3Z\-7B164\-A\), C clutch steel plates \(HL3Z\-7B442\-F\), D clutch steel plates \(HL3Z\-7B442\-D\), add the rear driveshaft flange CV joint\-to\-pinion flange cup bolts and retaining straps \(LK4Z\-4B496\-B\) for Transit, and update the parts description for the transfer case fluids applicable for each vehicle line. Some of the vehicles listed in the Model statement above may exhibit all of the following conditions: \* Harsh engagement \* Delayed engagement \* Harsh shift \* Delayed shift \* Illuminated malfunction indicator lamp \(MIL\) with diagnostic trouble codes \(DTC\) P0751, P0752, P0756, P0757, P0761, P0762, P0766, P0767, P0771, P0772, P2700, P2701, P2702, P2703, P2704, P2705, P2707, P2708, P0729, P0731, P0732, P0733, P0734, P0735, P0736, P076F, P07D9, P07F6 and/or P07F7 stored in the powertrain control module \(PCM\) or transmission control module \(TCM\). This may be due to PCM software and/or axial movement of the CDF clutch cylinder \(7H351\) sleeve causing hydraulic circuit
- [SSM 54719](/bulletins/11031262.md), 2026-04-10, Service bulletin: POWER TRAIN. For 20212026 vehicles equipped with the 10R80 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. When referred to a specific clutch \(A\-F\) test by a pinpoint test in Workshop Manual \(WSM\), Section 307\-01 \> Diagnosis and Testing, the Clutch Assembly tests have been updated with a hyperlink to the new Transmission Line Pressure Test \- Pressure Vacuum Transducer \(PVT\) Is Available procedure in WSM, Section 307\-01 \> General Procedures. This procedure provides instructions to perform the FDRS Transmission Clutch Circuit Leak Test when applicable. 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
- [SSM 54674](/bulletins/11030791.md), 2026-04-06, Service bulletin: POWER TRAIN. For 2021\-2026 vehicles equipped with the 10R80 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. The Workshop Manual \(WSM\) has been updated under Section 307\-01 \> Diagnosis and Testing to include this procedure. The new test improves the accuracy of detecting leaks within transmission fluid circuits and replaces the previous air check method.
- [TSB 26\-2112](/bulletins/11030178.md), 2026-03-23, Service bulletin: FUEL/PROPULSION SYSTEM; UNKNOWN OR OTHER; POWER TRAIN. This bulletin supersedes TSB 26\-2059. Reason For Update: To add missing labor operations. Some of the vehicles listed in the Model statement above may exhibit at least one of the following conditions: \- No upshift past second gear \- Unable to achieve third gear ratio \- Illuminated malfunction indicator lamp \(MIL\) with DTCs P0757 and P2701 This may be due to a damaged one\-way clutch \(OWC\).
- [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 26\-2046](/bulletins/11028832.md), 2026-02-17, Service bulletin: POWER TRAIN. This bulletin supersedes TSB 25\-2611. Reason For Update: Change the part number for the transmission fluid heat exchanger bolt \(Expedition/Navigator\) as well as change the claim/package quantities for HL3Z\-7B442\-F and HL3Z\-7B164\-C. Some of the vehicles listed in the Model statement above may exhibit at least one of the following conditions: \* Harsh engagement \* Delayed engagement \* Harsh shift \* Delayed shift \* Illuminated malfunction indicator lamp \(MIL\) with diagnostic trouble codes \(DTC\) P0751, P0752, P0756, P0757, P0761, P0762, P0766, P0767, P0771, P0772, P2700, P2701, P2702, P2703, P2704, P2705, P2707, P2708, P0729, P0731, P0732, P0733, P0734, P0735, P0736, P076F, P07D9, P07F6 and/or P07F7 stored in the powertrain control module \(PCM\) or transmission control module \(TCM\). This may be due to PCM software and/or axial movement of the CDF clutch cylinder \(7H351\) sleeve causing hydraulic circuit leaks.
- [TSB 25\-2611](/bulletins/11027124.md), 2026-01-06, Service bulletin: POWER TRAIN. This bulletin supersedes TSB 25\-2474 for 3 Part List corrections. Some of the vehicles listed in the Model statement above may exhibit at least one of the following conditions: \* Harsh engagement \* Delayed engagement \* Harsh shift \* Delayed shift \* Illuminated malfunction indicator lamp \(MIL\) with diagnostic trouble codes \(DTC\) P0751, P0752, P0756, P0757, P0761, P0762, P0766, P0767, P0771, P0772, P2700, P2701, P2702, P2703, P2704, P2705, P2707, P2708, P0729, P0731, P0732, P0733, P0734, P0735, P0736, P076F, P07D9, P07F6 and/or P07F7 stored in the powertrain control module \(PCM\) or transmission control module \(TCM\). This may be due to PCM software and/or axial movement of the CDF clutch cylinder \(7H351\) sleeve causing hydraulic circuit leaks. NOTE: If internal transmission service is required to address a concern detected with the CDF clutch cylinder following this article, technicians should carefully inspect and replace other transmission components and flush transmission fluid cooler only as necessary to confirm proper function. Add a new line to the repair order to document any additional repairs
- [25E10](/bulletins/11027044.md), 2026-01-06, Emissions: POWER TRAIN. Certain 2018\-2020 Model Year F\-150 Vehicles Equipped With 3.3L Engines Powertrain Control Module \(PCM\) Reprogramming

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