NHTSA ID Number: 10201906
Manufacturer Communication Number: TSB 21-2335
Summary
Some 2020-2021 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.
This bulletin supersedes 21-2109. Reason for update: Concern Carryover to New Model
Model:
2020-2021 Transit
Summary
This article supersedes TSB 21-2109 to update the vehicle model years affected.
Issue: Some 2020-2021 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 length of the evaporator drain tube.
Action: Follow the Service Procedure steps to correct the condition on vehicles that meet all of the following criteria:
- 2020-2021 Transit
- Pop/sizzle/crack noise due to water dripping on the exhaust
NOTE: Part quantity refers to the number of that service part number required, which may be different than the number of individual pieces. Service part numbers contain 1 piece unless otherwise stated. “As Needed” indicates the part is required but the number may vary or is not a whole number; parts can be billed out as non-whole numbers, including less than 1.
Parts
| Service Part Number | Quantity | Description |
TA-2-B
Genuine Ford Fluid TA-2 Seam Sealer - 10.3 oz.
Last update on 2026-07-03 / Affiliate links / Images from Amazon Product Advertising API | As Needed | Motorcraft® Seam Sealer (Black) |
| Obtain Locally | 1 | Vinyl Tube, 13 mm (1/2 Inch) Inside Diameter, 5 Cm (2 Inch) Long |
Service Procedure
1. Apply a thin coat of Motorcraft® Seam Sealer (Black) to the inside of one end of a locally acquired vinyl tube measuring 5 cm (2 in.) long and an inner diameter of 13 mm (1/2 in.).
2. Install the vinyl tube from the top side of the vehicle to the evaporator drain tube. Use a set of pliers to extend the reach if necessary. (Figure 1)
2 Affected Products
Vehicle
| MAKE | MODEL | YEAR |
FORD | TRANSIT | 2020-2021 |
1 Associated Document
Manufacturer Communications
21-2335
27 September 2021
NHTSA ID Number: 10191175
Manufacturer Communication Number: TSB 21-2109
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.
1 Associated Document
Manufacturer Communications
21-2109
09 April 2021
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- Easy Application & No Prep Needed: Seamlessly compatible with any standard urethane caulk gun, this auto glass sealant offers excellent adhesion without the need for surface prep. Our car seam sealer ensures quick and professional-grade gap filling.
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Last update on 2026-07-01 / Affiliate links / Images from Amazon Product Advertising API
SEOCONTENT-START
Warranty Status: Eligible under provisions of New Vehicle Limited Warranty (NVLW)/Service Part Warranty(SPW)/Special Service Part (SSP)/Extended Service Plan (ESP) coverage. Limits/policies/prior approvals are notaltered by a TSB. NVLW/SPW/SSP/ESP coverage limits are determined by the identified causal part and verifiedusing the OASIS part coverage tool. Labor Times Description OperationNo. Time 2020-2021 Transit: Extend The Evaporator Drain Tube Following The Service Procedure (DoNot Use With Any Other Labor Operations) 212335A 0.3Hrs. Repair/Claim Coding Causal Part: 19B555 Condition Code: 42
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