# Service bulletin TSB 26\-2023

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: 11031259
- Published by NHTSA: 2026\-04\-10
- Manufacturer's number: TSB 26\-2023
- Manufacturer's date: 2026\-04\-01
- NHTSA component: FUEL/PROPULSION SYSTEM; ENGINE

## NHTSA's summary

Some vehicles listed in the Model section above may exhibit an illuminated malfunction indicator lamp \(MIL\) with diagnostic trouble codes \(DTCs\) P2418:72 and/or P2450 stored in the PCM. This may be due to improperly connected evaporative emission line connections inside the fuel tank.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11031259-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11031259-9999.pdf)

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

## Components

Engine, Fuel system

## Trouble codes named

P2418, P2450

## Vehicles listed

- 2024 to 2026 FORD EXPEDITION
- 2024 to 2026 LINCOLN NAVIGATOR

## Recalls for the same vehicles and component

- [2025163](/recalls/tc/2025163.md), 2025-03-28: Engine
- [25V198000](/recalls/nhtsa/25V198000.md), 2025-03-28: ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION
- [24V851000](/recalls/nhtsa/24V851000.md), 2024-12-20: ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION
- [2024687](/recalls/tc/2024687.md), 2024-11-08: Engine

## Other bulletins for the same vehicles and component

- [SSM 55031](/bulletins/11035269.md), 2026-07-28, Service bulletin: UNKNOWN OR OTHER; FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM. Some 2021\-2026 Ford/Lincoln vehicles may exhibit various symptoms including but not limited to the auto start/stop system not operating as intended with a "Check Charging System" message in the instrument panel cluster \(IPC\) while the charging system is operating properly with no charging related diagnostic trouble codes \(DTC\) stored. This may be due to someone using an aftermarket programmer to change the body control module \(BCM\) configuration to disable the auto start/stop system or perform other unsupported programming modifications. To correct this condition on F\-150 and Bronco vehicles, download and run the Ford Diagnosis and Repair System \(FDRS\) application titled "BCM\-Charging System Configuration Correction". Running this application will determine if the BCM configuration was modified by the customer and if so, provide the option to return the configuration back to factory settings. For other vehicle models exhibiting concerns related to unsupported aftermarket BCM programming, submit a Technical Support Request \(TSR\) requesting support to revert the BCM configuration
- [SSM 54969](/bulletins/11034142.md), 2026-06-29, Service bulletin: ENGINE; EXTERIOR LIGHTING. Some 2025\-2026 Navigator vehicles may have diagnostic trouble code \(DTC\) B14E4:55 stored in the body control module \(BCM\). The rear turn signals may also flash solid rather than sweeping from inside out when activated. This may be due to replacement of the reversing lamp assembly without performing the "BCM\-Local Interconnect Network \(LIN\) New Module Initialization" application. The Workshop Manual \(WSM\), Section 417\-01 \> Removal and Installation procedure has been updated. Using the Ford Diagnostic and Repair System \(FDRS\), download and run the "BCM\-Local Interconnect Network \(LIN\) New Module Initialization" application. Follow the diagnostic scan tool directions to address this concern. For claiming use causal part 13B433 and labor operations 12651D and 12651D4.
- [SSM 54810](/bulletins/11032691.md), 2026-05-14, Service bulletin: ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM; UNKNOWN OR OTHER. Some 2024\-2026 Nautilus non\-hybrid and 2025\-2026 Aviator vehicles equipped with 28 radio speakers \(minor feature code IDBBN\) and 2025\-2026 Navigator vehicles may exhibit a no audio/sound condition with no communication with the audio digital signal processing module \(DSP\) with U0238 stored in the audio control module \(ACM\). This may be due to the DSP. To determine if the DSP is the root cause, remove the DSP fuse from the battery junction box \(BCMB fuse F40 for Aviator, BCMB fuse F138 for Nautilus, BJB fuse F5 for Navigator\). Inspect the fuse for an open and make sure the fuse has proper blade contact. After one minute, reinstall the good fuse. If the concern is still present or a fuse concern is found, refer to Workshop Manual \(WSM\), Section 415\-00 for normal diagnostics. If communication has been re\-established with the DSP, install a new DSP ordered from Ford Component Sales using the On\-Line 1878 form to correct this condition. Refer to Workshop Manual \(WSM\), Section 415\-00. For claiming, use causal part 18B849 and labor operations 12651D and 12651D13.
- [TSB 26\-2171](/bulletins/11031490.md), 2026-04-22, Service bulletin: ENGINE. This article updates TSB 25\-2154. Reasons for update: \*Parts List \*Service Procedure to replace the output planetary carrier assembly \*Added 2023\-2024 model year vehicles Some of the vehicles listed in the Model statement above may exhibit all of the following conditions: Shudder condition, most noticeable at speeds below 60 mph \(100 km/h\) No relevant diagnostic trouble codes \(DTC\) present Traceable shudder event with IDS/FDRS reading \*\(Figure 1\)\* This condition may be perceived/felt as an engine misfire. This may be due to a concern with the output planetary assembly.
- [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 \(OWC\).
- [DSMC\-25.15 Navigator](/bulletins/11029657.md), 2026-03-05, Over\-the\-air update: LANE DEPARTURE: ASSIST; VISIBILITY/WIPER; ENGINE; UNKNOWN OR OTHER; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL. "Quality improvements include: \-Addresses a false Driver Facing Camera signal that may trigger an error message"
- [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.
- [SSM 54392](/bulletins/11025816.md), 2025-12-01, Service bulletin: ENGINE; POWER TRAIN. Some 2021\-2025 F\-150/Expedition/Navigator vehicles equipped with a 3.5L EcoBoost engine may exhibit diagnostic trouble code \(DTC\) P0299 stored in the powertrain control module \(PCM\) and may also exhibit a rattle noise from the turbocharger. This may be due to the wastegate actuator rod being disconnected. Workshop Manual \(WSM\), Section 303\-04 Fuel Charging and Controls \> Turbocharger has been added to address this condition to allow servicing of the turbocharger actuator rod. In addition, the wastegate actuator rod and associated retention springs and clips have been released as lower level components to complete the repair without replacing the entire turbocharger actuator assembly.
- [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 54317](/bulletins/11024530.md), 2025-10-28, Service bulletin: ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. Some 2021\-2025 F\-150, 2022\-2025 Expedition/Navigator, 2023\-2025 F\-Super Duty, 2024\-2025 Ranger and 2026 Transit vehicles may exhibit a discharged battery and/or a no crank/no start condition. The vehicle may also exhibit a clicking noise from the trailer module \(TRM\) while the vehicle is off. This may be due to software in the TRM.\<br /\>\<br /\>Verify the TRM software part number in the vehicle using Ford diagnosis and repair system \(FDRS\) to be PC3T\-19J297\-BF, PC3T\-19J297\-FF, ML3T\-19J297\-CD or ML3T\-19J297\-GD. To confirm a vehicle is equipped with a certain software level, review the software information by hovering over the "Diagnostics" tab in Professional Technician System \(PTS\) and selecting "Vehicle Software". If one of the listed software part numbers is present, follow the Service Procedure to reprogram the TRM. For vehicles with any other software part number in the TRM, refer to Workshop Manual \(WSM\), Section 414\-01 to continue with normal diagnostics outside of this article. For claiming use causal part 19H332 and labor operation 12651D and 12651D4 of the Service Labor Time Standards \(SLTS\)

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