WenmarOpen by Wenmar Pro

Service bulletins for the 2020 Ford Transit

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.

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

By type

By component

By trouble code

Only bulletins with component: Heating and air conditioning are shown. Show all

Bulletins, newest first
SSM 498022021-06-01. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER; STRUCTURE:BODY:BUMPERS; ELECTRICAL SYSTEM. Some 2020 Transit vehicles upfitted by Utilimaster for Amazon may exhibit various heating, ventilation, and air conditioning (HVAC) concerns and/or blind spot, crosswalk, tire pressure monitor faults with one or more communication diagnostic trouble codes (DTC) for the MS1 CAN network. This may be caused by the blind spot information system (BLIS) wiring harness chafing on the Utilimaster installed bumper. Prior to performing Workshop Manual (WSM) diagnostics, remove the rear bumper per WSM Section 501-19 to inspect the BLIS wire harness 15K868 for damage. If damage is not present, continue with normal diagnostics. This information is for diagnostic purposes and the repairs are not covered under the Bumper to Bumper Warranty. Have the customer contact Utilimaster for review of the repair for warranty.
TSB 21-21092021-05-04. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. Some 2020 Transit vehicles may experience a pop/sizzle/crack noise from the exhaust. This may be due to water dripping on the exhaust from the evaporator drain tube. To correct the condition, follow the Service Procedure to extend the the length of the evaporator drain tube.
TSB 21-21062021-05-04. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:CONDENSOR/EVAPORATOR. Some 2017-2021 Transit vehicles built on or before 30-Nov-2020 may experience a slow fill condition and/or illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) P0171, P0174, P0451, P0455, P0456, P0496 and/or P1450. This may be due to a kinked evaporator emissions fresh air vent line. To correct this condition, follow the Service Procedure to attach a zip tie to the fresh air vent line.

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