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Service bulletins for the 2020 Ford Mustang

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.

184 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Only bulletins with component: Transmission and driveline are shown. Show all

Bulletins, newest first
TSB 22-21392022-04-26. Service bulletin. POWER TRAIN; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. Some 2017-2020 F-150, 2018-2022 Expedition/Navigator/Mustang and 2019-2022 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 break-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.
SSM 505552022-03-08. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN. Some 2020-2021 Mustang GT500 vehicles may experience erratic and harsh shifting at highway speeds and/or reduced speed when accelerating from a stop, with a powertrain malfunction (wrench) indicator and DTCs P1601/P061A while using SelectShift. This may be due to powertrain control module (PCM) calibration. This condition does not affect vehicle durability and no additional diagnosis or service is required at this time. Inform customers that they can continue to drive the vehicle but not to use SelectShift. Engineering is currently working on a solution for this condition that is expected in April 2022. Replacement or reprogramming of the PCM will not resolve this condition at this time. Schedule a follow-up appointment for repair in April 2022. Once the update becomes available, contact the customer and confirm the service appointment. Monitor OASIS for updates.
TSB 21-24232022-01-01. Service bulletin. POWER TRAIN. 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.
TSB 21-23572022-01-01. Service bulletin. POWER TRAIN. This article supersedes TSB 21-2315 to increase the labor operation time allowances. 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.
TSB 21-23902021-12-02. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING. Some 2020-2021 Mustang GT500 vehicles built on or before 30-June-2021 may exhibit a no crank/no start with no powertrain control module (PCM) communication condition if the oil level is approximately 1 or more quarts low and the oil life is at or less than 20%. This may be due to various parameters within the PCM. To correct the condition, follow the Service Procedure to reset and reprogram the PCM.
TSB 21-23152021-10-05. 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.
TSB 21-23302021-09-30. Service bulletin. POWER TRAIN. Some 2020 Mustang GT350 - 2020-2021 Mustang Mach 1/Shelby GT500 vehicles may exhibit a rear differential fluid leak at the differential cooler line fittings. This may be due to a seal within the fittings. To correct the condition, follow the service procedure to replace both rear differential cooler line fittings.
TSB 21-22942021-09-30. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); POWER TRAIN:MANUAL TRANSMISSION:INTERNAL:DOGS/SYNCHROS. Some 2019-2020 Edge/F-150/Fusion/Continental/MKZ/Nautilus, 2019-2021 Mustang/Ranger/Transit Connect, 2020-2021 EcoSport/Escape/Expedition/Explorer/F-Super Duty/Aviator/Corsair/Navigator and 2021 Bronco Sport vehicles with SYNC 3 may experience various SYNC performance related concerns To correct the condition, follow the Service Procedure to update the accessory protocol interface module (APIM) software.
SSM 501032021-09-28. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ENGINE AND ENGINE COOLING. Some 2020 Mustang vehicles equipped with a 5.0L engine built on 01-Sep-2020 and through 01-Dec-2020 may experience an illuminated malfunction indicator lamp (MIL) with diagnostic trouble code (DTC) P0369 in the powertrain control module (PCM). This may be due to a flatness concern on the mega cap on the right hand cylinder head. To correct the condition, replace the right-hand cylinder head. Refer to Workshop Manual (WSM), Section 303-01B > Removal and installation > Cylinder Head RH. For claiming, use causal part 6049 and applicable labor times in Section 06 of the Service Labor Time Standards (SLTS) Manual.
TSB 21-22842021-09-04. Service bulletin. POWER TRAIN. Some 2020-2021 Mustang GT500 vehicles may exhibit a clatter noise/vibration in reverse (R) at 3-8 mph (5-13 km/h) and/or an illuminated powertrain malfunction (wrench) indicator with diagnostic trouble codes (DTCs) P175C, P175D, P175E, P0844, P0849 and/or P0874 set in the transmission control module (TCM). This may be due to the software in the TCM. To correct the condition, follow the Service Procedure steps to check the transmission fluid pressure sensor and reprogram the PCM/TCM.
TSB 21-21482021-09-04. Service bulletin. POWER TRAIN. Some 2020-2021 Mustang GT500 vehicles may exhibit a transmission fluid leak caused by improperly seated or cracked transmission cooler tubes attached to the transmission case. This may be due to the retaining bolts being cross threaded causing the seals to leak and/or crack the lines. If the threads in the transmission case that the cooler tube retaining bolts go into are damaged, it is not necessary to replace the transmission. These threads can be repaired. To correct the condition, follow the Service Procedure to repair these threads and replace the tubes.
SSM 500492021-09-04. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION:INTERNAL:DOGS/SYNCHROS. Some 2017-2021 Ford and Lincoln vehicle customers may receive a message in their FordPass or Lincoln Way App stating Feature Unavailable. Since this is a fleet vehicle, it cannot access the SYNC Connect or FordPass Connect feature or Lincoln Connect or Embedded Modem Do not replace the TCU or perform any repair to resolve this condition. Refer the owner of the vehicle to Ford Pass Guides or Lincoln Way Concierge Teams to assist in removing the fleet telematics subscription.
SSM 498212021-06-01. 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.
TSB 21-21082021-05-04. Service bulletin. POWER TRAIN. Some 2020-2021 Mustang GT500 vehicles may exhibit a transmission fluid leak caused by improperly seated transmission cooler tubes attached to the transmission case. If the threads in the transmission case that the cooler tube retaining bolts go into are damaged, it is not necessary to replace the transmission. These threads can be repaired. To correct the condition, follow the Service Procedure to repair these threads.
SSM 495812021-03-03. Service bulletin. POWER TRAIN. Some 2020-2021 Mustang GT500 vehicles may exhibit various transmission related concerns and/or DTCs. In addition to following normal Workshop Manual (WSM) diagnostics, inspect C105, an inline connector next to the right side valve cover, for signs of pushed out terminals, terminal damage, or harness damage. If any pushed out terminals, terminal damage, or harness damage is found, repair as necessary.
SSM 494402021-02-04. Service bulletin. POWER TRAIN. Some 2020 Mustang GT500 vehicles may exhibit various transmission related concerns and/or DTCs. In addition to following normal Workshop Manual (WSM) diagnostics, inspect C105, an inline connector next to the right side valve cover, for signs of pushed out terminals, terminal damage, or harness damage. If any pushed out terminals, terminal damage, or harness damage is found, repair as necessary.
SSM 492922020-11-04. 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.
TSB 20-21982020-09-02. Service bulletin. POWER TRAIN. This article supersedes TSB 20-2083 to update the vehicle model years affected. Some 2019-2020 Ranger and 2020 F-150/Mustang vehicles equipped with a 10R80 transmission and built on 21-Oct-2019 and through 16-Dec-2019 may exhibit a high-pitched whine coming from the transmission at low speeds during light acceleration or coasting. This may be due to the outer output shaft bearing. To correct the condition, follow the Service Procedure steps to replace the transmission inner output shaft bearing, fluid passage sleeve and outer output shaft bearing.
TSB 20-20832020-04-02. Service bulletin. POWER TRAIN. Some 2020 F-150/Mustang/Ranger vehicles equipped with a 10R80 transmission and built on 21-Oct-2019 and through 16-Dec-2019 may exhibit a high-pitched whine noise coming from the transmission at low speeds during light acceleration or coasting. This may be due to the outer output shaft bearing. To correct the condition, follow the Service Procedure steps to replace the transmission inner output shaft bearing, fluid passage sleeve and outer output shaft bearing.
SSM 484232020-01-08. Service bulletin. POWER TRAIN. Some 2015-2020 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. 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 484032020-01-08. Service bulletin. POWER TRAIN. Some 2020 F-150/Mustang/Ranger vehicles equipped with 10R80 transmissions may exhibit a high-pitched whine noise coming from the rear of the transmission at speeds between 30-50 km/h (18-30 MPH) during light acceleration and while coasting down. The noise will not be present when the vehicle in in NEUTRAL. This may be due to an output shaft bearing. This condition will not affect transmission durability or function. If no additional symptoms are present, do not attempt any repairs or transmission replacement at this time. Engineering is investigating, monitor OASIS for updates.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.