| TSB 16-0078 | 3.7L – ILLUMINATED MALFUNCTION INDICATOR LAMP (MIL) – DIAGNOSTIC TROUBLE CODE (DTC) P013C – BUILT ON OR BEFORE 4/21/2016 |
| Publication Date: May 4, 2016 | |
| LINCOLN | 2016 MKX |
ISSUE:
Some 2016 MKX vehicles equipped with a 3.7L Duratec engine and built on or before 4/21/2016 may exhibit an illuminated MIL with DTC P013C stored in the powertrain control module (PCM). This may be caused by improper sealing of the left side exhaust y-pipe flange due to weld splatter or exhaust pipe intrusion into the flange sealing surface.
ACTION:
Follow the Service Procedure steps to correct the condition.
SERVICE PROCEDURE
- Use the Ford
Integrated Diagnostic System (IDS) or equivalent scan tool to check for DTCs in the PCM. Is DTC P013C present?
- Yes – proceed to Step 2.
- No – this article does not apply. Refer to the Powertrain Controls and Emissions Diagnostics (PC/ED) manual for normal diagnostics.
- Remove the exhaust y-pipe. Refer to Workshop Manual (WSM), Section 309-00.
- Inspect the left side exhaust y-pipe flange sealing area that attaches to the left side catalytic converter for signs of weld slag and/or exhaust pipe intrusion into the flange sealing area. Are sign of weld slag and/or exhaust pipe intrusion present in the flange sealing area? (Figures 1-2)

Figure 1 – 16-0078
- Yes – proceed to Step 4.
- No – proceed to Step 5.
- Use a flat file or 60 grit sandpaper on an oscillating sander with a flat pad to remove the weld slag and/or exhaust pipe material protruding above the flange sealing surface.
- Removing too much material from the flange sealing surface may cause additional exhaust leaks.
- Check for proper torque of the left side catalyst monitoring sensor (CMS). The CMS should be torqued to 48 Nm (35 lb-ft ).
- Clean the exhaust y-pipe mounting flanges with a clean microfiber cloth and replace the exhaust y-pipe gaskets.
- Reinstall the exhaust y-pipe. Refer to WSM, Section 309-00.
- Clear DTCs from the PCM memory.
| F2GZ-9450-A | Gasket – Exhasut Y Pipe Outlet |
| 7T4Z-9450-AA
Ford Gasket
Last update on 2026-06-10 / Affiliate links / Images from Amazon Product Advertising API | Gasket – Exhaust Y Pipe Flange to Converter Gasket |
| W714265-S442 | Fastener – Exhaust System (8 Req.) |
| OPERATION | DESCRIPTION | TIME |
| 160078A | 2016 MKX 3.7L: Retrieve DTCs And Clean Sealing Surfaces Following The Service Procedure (Do Not Use With Any Other Labor Operations) | 0.6 Hr. |
WARRANTY STATUS
Eligible Under Provisions Of New Vehicle Limited Warranty Coverage And Emissions Warranty Coverage.
Warranty/ESP coverage limits/policies/prior approvals are not altered by a TSB. Warranty/ESP coverage limits are determined by the identified causal part and verified using the OASIS part coverage tool.
DEALER CODING
| BASIC PART NO. | CONDITION CODE |
| 5G203 | D8 |
- Please measure your own pipe and bumper cutout, and compare to this product fitment size.
- This exhaust tips fit pipes measuring between 1.75 and 2.5 inches in diameter.
- Size : / Length 6'' / width 3'' / Inlet Diameter 2 3/4'' / Outlet Diameter 3''
- This muffler tips are made by high quality stainless steel and won’t change the sound or function of your car.
- Clamp-on and bolt-on installation : They are attached to the tailpipe by clamps or screws.
Last update on 2026-06-10 / Affiliate links / Images from Amazon Product Advertising API
- Resonated tips are to enhance sound output
- Affordable Performance: the exhaust tip is designed to boost the intensity of the exhaust notes; It helps to create a more aggressive sound while adding a sporty look to your vehicle
- Resonated Tips Are To Enhance Sound Output
- Coated Stainless Steel Resonated Bolt-On Exhaust Tip- Black
Last update on 2026-06-18 / Affiliate links / Images from Amazon Product Advertising API
Last update on 2026-06-18 / Affiliate links / Images from Amazon Product Advertising API
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