NHTSA ID Number: 10169854
Manufacturer Communication Number: TSB 19-2388
Summary
Some 2015-2019 Transit vehicles may exhibit poor air conditioning (A/C) performance. If the cause of this is found to be a refrigerant leak from the evaporator, this may be due to build up of contaminates inside the evaporator housing. To correct this concern, replace only the evaporator housing and install a cabin air filter as opposed to replacing the entire climate control housing assembly.
5 Affected Products
Vehicle
| FORD | TRANSIT | 2015-2019 |
This bulletin supersedes 19-2166. Reason for update: New Part/Procedure For Same Condition
Model:
Ford![]()
2015-2019 Transit
Summary
This article supersedes TSB 19-2166 to update the Parts List and Service Procedure.
Issue: Some 2015-2019 Transit vehicles may exhibit poor air conditioning (A/C) performance. If the cause of this is found to be a refrigerant leak from the evaporator, this may be due to build up of contaminates inside the evaporator housing. To correct this concern, replace only the evaporator housing and install a cabin air filter as opposed to replacing the entire climate control housing assembly.
Action: Follow the Service Procedure steps to correct the condition on vehicles that meet all of the following criteria:
- 2015-2019 Transit
- Evaporator core leak
Parts
| Description | Quantity | Part Number | |
| Motorcraft® FP74 | Cabin Filter | 1 | BK2Z-19N619-A |
| – | Evaporator Housing | 1 | CK4Z-18A484-D |
| – | Motorcraft® PAG Refrigerant Compressor Oil | 1 | YN-12-D
Motorcraft Oil Compressor - YN12D
Last update on 2026-06-18 / Affiliate links / Images from Amazon Product Advertising API |
| – | A/C Evaporator O-Ring Kit | 1 | 6E5Z-19B596-A
Motorcraft - Kit (P) (YF37424)
Last update on 2026-06-18 / Affiliate links / Images from Amazon Product Advertising API |
| – | Motorcraft® Orange Prediluted Antifreeze/Coolant (All Markets Except Canada) | As Required | VC-3DIL-B
Ford Genuine Anti Freeze, VC-13DL-G
Last update on 2026-06-18 / Affiliate links / Images from Amazon Product Advertising API |
| – | Motorcraft® Orange Prediluted Antifreeze/Coolant (Canada Only) | As Required | CVC-3DIL-B |
| – | Motorcraft® Yellow Prediluted Antifreeze/Coolant (All Markets Except Canada) | As Required | VC-13DL-G
Ford Genuine Anti Freeze, VC-13DL-G
Last update on 2026-06-18 / Affiliate links / Images from Amazon Product Advertising API |
| – | Motorcraft® Yellow Prediluted Antifreeze/Coolant (Canada Only) | As Required | CVC-13DL-G |
| A-Pillar Trim Panel | 1 | 6103599 |
SEOCONTENT-START
TECHNICAL SERVICE BULLETIN
Poor A/C Performance – Evaporator Housing Can Now Be
Serviced Separately From The Climate Control Housing
Assembly/Add Cabin Air Filter
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 not altered by a TSB. NVLW/SPW/SSP/ESP coverage limits are determined by the identified causal part and verified using the OASIS part coverage tool.
Labor Times
| Description | Operation No. |
Time |
| 2015-2019 Transit: Inspect The A/C System And Replace The Evaporator Core Includes Time To Remove and Separate The Climate Control Housing And Install A Cabin Air Filter (Do Not Use With Any Other Labor Operations) | 192388A | 6.4 Hrs. |
| 2015-2019 Transit 3.2L Puma: Inspect The A/C System And Replace The Evaporator Core Includes Time To Remove and Separate The Climate Control Housing And Install A Cabin Air Filter (Do Not Use With Any Other Labor Operations) | 192388B | 6.8 Hrs. |
Repair/Claim Coding
| Causal Part: | 18A484 |
| Condition Code: | 42 |
SEOCONTENT-END
Service Procedure
NOTE: Some Transit vehicles that have had a heater core repair and system flush or were built on or after 02-Jan-2019 may be using Motorcraft Yellow Antifreeze/Coolant. If Motorcraft Yellow Antifreeze/Coolant is found in the vehicle, service with the same coolant.
- Inspect the A/C system. Does the system show signs of leaks in components other than the evaporator?
(1). Yes – this article does not apply. Refer to Workshop Manual (WSM), Section 412-00.
(2). No – proceed to Step 2.
- Remove the climate control housing. Refer to WSM, Section 412-00.
- Remove the retaining clip from the bottom of the case. (Figure 1 Callout 1)
Figure 1

| Item | Description |
| 1 | Retaining clip |
| 2 | Retaining screws |
- Remove the 3 retaining screws and separate the blower motor case from the evaporator housing.
(Figure 1 Callout 2) - Attach the blower motor case to the new evaporator case and install the 3 retaining screws. Tighten the 3 retaining screws to 3.7 Nm +/- 0.6 (32.75 lb-in +/- 5.31).
- Install the remaining clip.
- Install the cabin air filter in case above blower motor. (Figure 2)
Figure 2

- Reinstall the climate control housing. Refer to WSM, Section 412-00.
- Inform the customer the vehicle is now equipped with a cabin air filter that will require maintenance every 32,000 km (20,000 miles). Print the Customer Information Sheet and provide to the customer prior to releasing the vehicle.
(1). Click this link to retrieve the Customer Information Sheet.
19-2388
19 December 2019
19-2166
19 June 2019
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- GREEN REFRIGERATION SOLUTION: ZeroR AC Refrigerant is a 100% natural hydrocarbon gas, offering a more eco-friendly alternative to traditional AC recharge like R134a. It helps reduce environmental impact while providing reliable cooling performance
- R134A READY INSTALLATION: Designed to fit R134a systems, ZeroR AC Refrigerant installs just like any standard refrigerant. The cans feature R134a-compatible threads, ensuring easy and seamless installation with your existing R 134a refrigerant can taps
- SMALLER CAN BIGGER IMPACT: Each can of our car AC refrigerant holds 6oz of refrigerant, but its performance is equivalent to 16oz of R134a. This makes it a highly efficient and cost-effective option, requiring less product while maintaining excellent performance
- BUILT FOR SAFE USAGE: ZeroR AC Car Refrigerant is rated with a class 2.1 rating, similar to newer refrigerants like R1234YF. When used in systems designed for refrigerants, it’s safe and poses no danger to users under normal operating conditions
- REGULATED FOR LEGAL SAFETY: ZeroR AC Recharge Can is approved for use in R134a systems only, in compliance with EPA regulations. It ensures proper functionality without the risk of mixing refrigerant types, providing peace of mind and legal safety
- R134a Replacement - Hydrocarbon blend that is 100% natural, safe for the ozone and non global warming. Chemically compatible with R134a systems.
- 6oz (11.7 fl oz) Cans - Compressed gas is measured by weight. This gas is light weight compared to others, but has the same "volume". Guaranteed that you will use no more than normal!
- SSV Cans - Self Sealing Valve allows for the storage of unused gas. Requires SSV compatible tool. Avoid "piercing" style tools or the gas may come out slowly or not at all.
- Disclosures - Product is flammable like many other modern refrigerants. Observe all precautions on the product lablel when handling and storing. Follow all legal requirements when charging your system. Hydrocarbon blend refrigerant for NON MVAC use in 6oz SSV Cans.
Last update on 2026-05-31 / Affiliate links / Images from Amazon Product Advertising API
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