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Service bulletin TSB 21-2109

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 id10191175
Published by NHTSA2021-05-04
Manufacturer's numberTSB 21-2109
Manufacturer's date2021-04-12
NHTSA componentVISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM

NHTSA's summary

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.

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

Glass, wipers and mirrors, Heating and air conditioning

Vehicles listed
FORD TRANSIT2020

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

Recalls for the same vehicles and component
20253602025-06-27. Visual System
20213962021-06-24. Visual System
20204542020-09-24. Visual System

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
SSM 498022021-06-01. Service bulletin. 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 21-21062021-05-04. Service bulletin. 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.
19B422020-01-09. Service bulletin. NEW VEHICLE DELIVERY HOLD - Customer Satisfaction Program 19B42 Certain 2020 Model Year Transit Vehicles With All Wheel Drive and Rear Climate Control Rear Heater Coolant Lines Inspection and Repair