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Service bulletin 21N06

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10189759
Published by NHTSA2021-04-03
Manufacturer's number21N06
Manufacturer's date2021-03-17
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

Certain 2013-2016 Model Year F-Series Super Duty 6.7L Diesel and 2015-2019 Model Year Transit 3.2L Diesel Vehicles Selective Catalyst Reduction System Warranty Extension In all of the affected vehicles, the onboard diagnostic (OBD) system initially contained a software error that prevented illumination of the malfunction indicator light (MIL) if a certain fault was present in the SCR. Since the PCM was reprogrammed under Emissions Recall 21E01, the OBD system is now able to detect this SCR fault previously masked by the software error and can light the MIL if faults are found to be present

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system

Vehicles listed
FORD F-250 SD2013, 2014, 2015, 2016 (the catalog's model; the bulletin names a series or trim of it)
FORD F-350 SD2013, 2014, 2015, 2016 (the catalog's model; the bulletin names a series or trim of it)
FORD F-450 SD2013, 2014, 2015, 2016 (the catalog's model; the bulletin names a series or trim of it)
FORD F-550 SD2013, 2014, 2015, 2016 (the catalog's model; the bulletin names a series or trim of it)
FORD TRANSIT2015, 2016, 2017, 2018, 2019

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
18V2750002018-04-30. ELECTRICAL SYSTEM:WIRING
20182162018-04-27. Electrical
20175162017-10-24. Electrical
17V6680002017-10-23. ELECTRICAL SYSTEM:WIRING

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
25N15 S12026-04-30. Other. Customer Satisfaction Program 25N15 - Supplement #1 Certain 2015-2019 Model Year Multiple Vehicle Lines Rear View Camera Inspection For One-Time Replacement
SSM 546012026-02-27. Service bulletin. Ford and Lincoln vehicles equipped with wired keyless entry keypad systems and accessory wireless keyless entry keypad systems may or may not come with a wallet card containing the master code. Unlike the integrated wired keypad, the accessory wireless keypad master code cannot be retrieved from the vehicle using a diagnostic scan tool or from the label printed on the body control module (BCM). The Factory Keyless Entry Code application within the diagnostic scan tool will not provide an applicable master code for the accessory wireless keypad. If the wallet card for an accessory keypad is not available, the "Wireless RF Keypad Diagnosis Guide" can be referenced and provides direction on how to retrieve the master code. This guide is located under the Workshop Manual tab > Accessories > Installation > Wireless RF Keypad Diagnosis Guide > PPT C > Step C2.<br /><br /> Note: The only available keypad for some vehicles from the assembly plant is the accessory wireless keyless entry keypad. The integrated wired keypad cannot be installed on vehicles not equipped from the factory with a wired keyless entry k
TSB 25-25702025-12-01. Service bulletin. This article supersedes TSB 24-2165 to update the TSB Service Procedure. Some vehicles listed in the Model statement above may exhibit various SYNC performance related concerns including but not limited to: Display operation concerns Navigation inoperative Voice recognition concerns Phone connection issues Dropped phone connections Applink related performance Travel Link not present or showing incorrect traffic Slow system response NOTE: Ford has found some of the APIMs replaced and returned for inspection contained an outdated software level and the APIM did not require replacement. The customer concern may have been resolved by updating the APIM with latest level of software. The SYNC 3 universal thumb drive will be able to update the APIM software without the use of a scan tool and does not require the process to be monitored. Ford will be monitoring APIM replacements to confirm TSB directed software updates have been performed.
SSM 543662025-11-19. Service bulletin. Some 2015-2021 Ford and Lincoln vehicles may exhibit an illuminated MIL with diagnostic trouble codes (DTCs) P0011, P0012, P0014, P0015, P0016, P0017, P0018, P0019, P0021, P0022, P0024 and/or P0025. Pinpoint test HK in the Powertrain Control and Emissions Diagnosis (PC/ED) or in Section 303-14 of the Workshop Manual (WSM) has been updated to address this concern.
TSB 23-22302023-11-21. Service bulletin. Some 2019-2020 Transit vehicles may exhibit various SRS diagnostic trouble codes (DTCs) when used as delivery and/or courier vehicle. This may be due to repeated rear entry of the vehicle by crossing between the front seats or stepping in the center portion of the floor near the restraints control module (RCM). To correct the condition, follow the Service Procedure to install a revised wiring harness pigtail for connection to the RCM.
SSM 519472023-10-06. Service bulletin. Some 2015-2019 F-Super Duty and 2015-2020 F-150/Mustang vehicles may require replacement of the powertrain control module (PCM) for various reasons. While performing a programmable module installation (PMI) using the Integrated Diagnostic Service (IDS) scan tool, an error message may state: Configuration Failed, Would You Like To Retry? This may be due to improper module replacement steps. Make sure that the original module is installed in the vehicle, delete the vehicle session, then start a new vehicle session. Once the session starts, run the PCM PMI and install the new PCM only when the scan tool instructs. Finish the PMI by following the prompts given by IDS. If the original PCM is not available, it is possible to configure the module by running as-built programming on the PCM. When IDS asks to obtain part numbers or configuration data, select configuration data.
SSM 518382023-09-04. Service bulletin. In various 2017-2023 Ford and Lincoln vehicles, customers may receive a message in the FordPass or LincolnWay App stating Feature Unavailable. Since this is a fleet vehicle, it cannot access the (SYNC Connect) FordPass or LincolnWay app through the TCU Embedded Modem. If this message appears, the vehicle may be equipped with a fleet telematics module. Replacement of the TCU or TCU related repairs will not prevent this message from appearing. Refer the customer to in app FordPass Guides or LincolnWay Concierge Teams to aid with fleet telematics removal. Open app, select Account > Help > CHAT or CALL option.
SSM 513062023-02-02. Service bulletin. Some 2018-2023 F-150, Expedition, Navigator, Transit, Aviator and Explorer vehicles may exhibit an illuminated MIL with diagnostic trouble codes (DTCs) P0627, P025A, P025B, P00C6, P008A and/or U0109 stored in the powertrain control module (PCM). This may be due to an intermittent or partial disconnect of the harness to the fuel pump control module (FPCM) connector, connector pin push-outs, damaged pins/terminals, or loose/corroded grounds. Inspect FPCM connector, applicable grounds (F-150 - G401, Expedition/Navigator - G403, Transit - G401, 2018-2019 Explorer G302, 2020-2022 Explorer/Aviator - G407) and confirm FPCM connector (F-150 - C4336, Expedition/Navigator - C433, Transit - C433, 2018-2019 Explorer - C3239, 2020-2022 Explorer/Aviator - C4033) is fully seated prior to performing PC/ED diagnostics or replacing any components.
SSM 511682022-11-29. Service bulletin. 2015-2023 Transit vehicles equipped with DRW have a high mount rear marker lamp that does not illuminate with the stop lamps. This lamp assembly may appear to be a stop lamp but is intended to illuminate with the parking lamps only. This information is available in Workshop Manual Section 417-01. The JDDAB feature code description, found under OASIS additional information, is common between single rear wheel and DRW vehicles, and incorrectly reflects stop functionality when applied to DRW units.
SSM 508412022-06-17. Service bulletin. Some 2018-2022 F-150, Expedition, Navigator, Transit, Aviator and Explorer vehicles may exhibit an illuminated MIL with diagnostic trouble codes (DTCs) P0627, P025A, P025B, P00C6, P008A and/or U0109 stored in the powertrain control module (PCM). This may be due to an intermittent or partial disconnect of the harness to the fuel pump control module (FPCM) connector, connector pin push-outs, damaged pins/terminals, or loose/corroded grounds. Inspect FPCM connector, applicable grounds (F-150 - G401, Expedition/Navigator - G403, Transit - G401, 2018-2019 Explorer G302, 2020-2022 Explorer/Aviator - G407) and confirm FPCM connector (F-150 - C4336, Expedition/Navigator - C433, Transit - C433, 2018-2019 Explorer - C3239, 2020-2022 Explorer/Aviator - C4033) is fully seated prior to performing PC/ED diagnostics or replacing any components.