# Service bulletin TSB 21\-2381

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: 10203646
- Published by NHTSA: 2021\-12\-02
- Manufacturer's number: TSB 21\-2381
- Manufacturer's date: 2021\-11\-19
- NHTSA component: ENGINE AND ENGINE COOLING; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\)

## NHTSA's summary

Some 2020\-2021 Expedition/Navigator vehicles may exhibit an illuminated malfunction indicator lamp \(MIL\) with diagnostic trouble codes \(DTCs\) P0420 and/or P0430 stored in the powertrain control module \(PCM\). This may be due to high sulfur content in the fuel. To correct the condition, follow the Service Procedure to de\-sulfate the catalytic convertors.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10203646-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10203646-9999.pdf)

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

## Components

Engine, Transmission and driveline, Automatic transmission, Transmission control module

## Trouble codes named

P0420, P0430

## Vehicles listed

- 2020 to 2021 FORD EXPEDITION
- 2020 to 2021 LINCOLN NAVIGATOR

## Recalls for the same vehicles and component

- [26V402000](/recalls/nhtsa/26V402000.md), 2026-06-24: POWER TRAIN:AUTOMATIC TRANSMISSION
- [20V197000](/recalls/nhtsa/20V197000.md), 2020-04-03: POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION \(PRNDL\)

## Other bulletins for the same vehicles and component

- [TSB 23\-2350](/bulletins/10245418.md), 2023-11-22, Service bulletin: POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE. Some 2017\-2020 F\-150, 2018\-2021 Expedition/Navigator/Mustang, 2019\-2023 Ranger vehicles equipped with a 10R80 transmission may exhibit a harsh/delayed engagement and/or harsh/delayed shift, an illuminated malfunction indicator lamp \(MIL\) with diagnostic trouble codes This may be due to the software in the powertrain control module \(PCM\) or transmission control module \(TCM\), the transmission solenoid ID strategy, sticking valves in the main control valve body and/or axial movement of the CDF clutch cylinder \(7H351\) sleeve. To correct the condition, follow the Service Procedure to identify and correct the condition.
- [TSB 23\-2256](/bulletins/10241526.md), 2023-09-01, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM:IGNITION. Some 2020\-2021 Expedition vehicles my exhibit a no restart during auto start\-stop operation. This may be due to a software parameter in the PCM. To correct the condition, follow the Service Procedure to reprogram the PCM.
- [SSM 51764](/bulletins/10238468.md), 2023-07-03, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ENGINE AND ENGINE COOLING. Some 2020\-2023 Explorer/Aviator vehicles equipped with a 3.0L EcoBoost may exhibit an illuminated malfunction indicator lamp \(MIL\) and low oil pressure warning in the instrument panel cluster \(IPC\), with diagnostic trouble codes \(DTC\) P0521 and/or P0524 in the powertrain control module \(PCM\). This condition may be caused by an internal oil pressure leak. If pinpoint test E in the Workshop Manual \(WSM\) Section 303\-01B directs you to the replacement of the oil pump, upon reassembly inspect that the main oil gallery tube \(6718\) is assembled and aligned properly on the back of the engine front cover. The engine oil gallery seal \(00815\) must be replaced any time the front cover is removed \(per WSM Section 303\-01B\). The WSM front cover removal and installation procedure is in the process of being updated.
- [TSB 22\-2137](/bulletins/10214752.md), 2022-06-27, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Some 2018\-2020 F\-150 vehicles equipped with a 2.7L EcoBoost and 2020\-2021 Expedition/Navigator may exhibit an illuminated malfunction indicator lamp \(MIL\) with diagnostic trouble codes \(DTCs\) P0420 and/or P0430 stored in the powertrain control module \(PCM\). This may be due to high sulfur content in the fuel. To correct the condition, follow the Service Procedure to de\-sulfate the catalytic convertors.
- [21N08](/bulletins/10202720.md), 2021-11-02, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE; ENGINE. Certain 2017\-2020 Model Year F\-150, 2018\-2020 Expedition, and 2018\-2020 Navigator Vehicles Equipped with a 3.5L GTDI Engine PCM Reprogram Due to Engine Shudder; Owner Letter sent
- [TSB 21\-2315](/bulletins/10201905.md), 2021-10-05, Service bulletin: POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION. Some 2017\-2020 F\-150, 2018\-2021 Expedition/Navigator/Mustang and 2019\-2021 Ranger vehicles equipped with a 10R80 automatic transmission may exhibit a harsh engagement/harsh shift/delayed shift. It is possible the vehicle may also have an illuminated malfunction indicator lamp \(MIL\) or 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 incompatibility of the adaptive calibration to adapt to hardware wear\-in over time. To correct the condition, follow the Service Procedure steps to overhaul the main control valve body and/or perform an adaptive learning drive cycle.
- [21N03\-S2](/bulletins/10201669.md), 2021-09-30, Service bulletin: ELECTRICAL SYSTEM:ADAS:CONTROL MODULE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE. Certain 2017\-2020 Model Year F\-150, 2018\-2020 Expedition, and 2018\-2020 Navigator Vehicles Equipped with a 3.5L GTDI Engine Cam Phaser Replacement; Owner letters are scheduled to mail during the week of September 27, 2021• Submitting Claims with Ford Protect for Balance Remaining: Added instruction on how to claim the customer paid portion of the FSA with Ford Protect.• Submitting Claims with Customer Loyalty Program for Balance Remaining: Added instruction on how to claim the customer paid portion of the FSA using CLP Funds. This program extends the warranty coverage of the engine cam phasers until January 1, 2023 provided the Repair Order \(RO\) date of Powertrain Control Module reflash under Customer Satisfaction Program 21B10 occurs on or before February 28, 2022
- [SSM 49821](/bulletins/10194428.md), 2021-06-01, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION; ENGINE AND ENGINE COOLING. Some 2015\-2021 Ford and Lincoln vehicles may exhibit an illuminated MIL with diagnostic trouble codes \(DTC\) P0011, P0012, P0014, P0015, P0016, P0017, P0018, P0019, P0021, P0022, P0024 and/or P0025. This may be due to small debris causing the VCT solenoid to stick. Before attempting any component diagnosis or replacement of the VCT solenoid, refer to Powertrain Control and Emissions Diagnosis \(PC/ED\) pinpoint test HK11 to cycle the affected VCT solenoid 10 times to attempt to clear the debris. For claiming, use causal part 6M280 and applicable labor operations in Section 10 of the Service Labor Time Standards \(SLTS\) Manual.
- [SSM 49292](/bulletins/10181931.md), 2020-11-04, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Some 2018\-2020 Ford and Lincoln vehicles may exhibit inoperative remote features via the Ford Pass/Lincoln Way mobile app, incomplete user authorization, no modem electronic serial number \(ESN\) displayed or DTCs U2100 and/or B156D in the telematics control unit \(TCU\). These symptoms may persist even after performing a TCU software update and/or replacement. To correct this condition, start a new session with the latest version of the appropriate diagnostic scan tool and perform a PMI on the TCU. If issues persist, open a hotline assistance request and include the IDS version \(if applicable\) used to perform the PMI and the Authorization Status PID value in the TCU datalogger. For claiming use causal part 14H092 and applicable labor times in Section 10 of the Service Labor Time Standards \(SLTS\) Manual.
- [SSM 49219](/bulletins/10180675.md), 2020-10-06, Service bulletin: ENGINE AND ENGINE COOLING; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Some 2018\-2020 Navigator vehicles may exhibit excessive oil consumption with no visible oil leaks with or without diagnostic trouble code \(DTC\) P0365 and/or P0369. Engineering is working to implement a PCM calibration update for this condition. In the interim, clear the DTCs with the appropriate Ford scan tool, top off the oil to the top of the 'full range' on the dipstick and schedule a follow\-up appointment with the customer for late November 2020. Advise the customer that a repair is expected to be available in November and remind customers to follow the Owner's Manual to check oil level. Dealers are requested to contact all customers that were previously scheduled to have this service performed in September and reschedule for late November.

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