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NHTSA ID Number: 10236033
Manufacturer Communication Number: TSB 23-2132
Summary
Some 2018-2023 Mustang
vehicles (non-Shelby GT-350) may exhibit various concerns with the active exhaust system. These may include Exhaust Mode Selection Not Available messages, and/or illuminated malfunction indicator lamp (MIL) with diagnostics trouble codes (DTCs) P26C5, P26C6, P26FE, P2BF9, P2BFB, P26C7, P2BF5, P2BF8, P2BFD and/or P2BFA. This may be due to an improperly seated exhaust system. To correct the condition, follow the Service Procedure to diagnose the tailpipe actuator.
This bulletin supersedes 22-2282.
Model:
Summary
This article supersedes TSB 22-2282 to update the vehicle models affected.
Issue: Some 2018-2023 Mustang vehicles (non-Shelby GT-350) may exhibit various concerns with the active exhaust system. These may include Exhaust Mode Selection Not Available messages, and/or illuminated malfunction indicator lamp (MIL) with diagnostics trouble codes (DTCs) P26C5, P26C6, P26FE, P2BF9, P2BFB, P26C7, P2BF5, P2BF8, P2BFD and/or P2BFA. This may be due to an improperly seated exhaust system. To correct the condition, follow the Service Procedure to diagnose the tailpipe actuator.
Action: Follow the Service Procedure to correct the condition on vehicles that meet all of the following criteria:
- 2018-2023 Mustang (non-Shelby GT-350)
- Exhibit concerns with the active exhaust system, including but not limited to:
- Drive Mode Not Available message in the instrument panel cluster (IPC).
- Exhaust Mode Not Available message in the IPC.
- Illuminated MIL with DTCs P26C5, P26C6, P26FE, P2BF9, P2BFB, P26C7, P2BF5, P2BF8, P2BFD and/or P2BFA.
Parts
| Service Part Number | Quantity | Description | Unit of Issue | Piece Quantity |
| W520111-S424 | 1 | Exhaust Actuator Nuts | 4 | 3 |
| W711687-S300 | 1 | Rear Underbody Shield Tree Fastener | 4 | 2 |
| W718128-S417 | 2 | Rear Underbody Shield Push Pin Fastener | 4 | 6 |
Parts
Parts To Inspect And Replace Only If Necessary
| Service Part Number | Quantity | Description | Unit of Issue | Piece Quantity |
| KR3Z-14A411-G | If Needed | Exhaust Actuator Harness – GT500/Mach 1 | 1 | 1 |
| JR3Z-14A411-H | If Needed | Exhaust Actuator Harness – 2.3L/5.0L | 1 | 1 |
| JR3Z-6554-A | If Needed | Exhaust Actuator Service Kit | 1 | 1 |
| KR3Z-5230-P | If Needed | Muffler and Tailpipe Assembly – GT500 | 1 | 1 |
| JR3Z-5230-FC | If Needed | Muffler and Tailpipe Assembly – 5.0L | 1 | 1 |
| KR3Z-5230-H | If Needed | Muffler and Tailpipe Assembly – 2.3L | 1 | 1 |
| KR3Z-5230-M | If Needed | Muffler and Tailpipe Assembly – 5.0L Bullitt | 1 | 1 |
| MR3Z-5230-C | If Needed | Muffler and Tailpipe Assembly – 5.0L Mach 1 (A) | 1 | 1 |
| MR3Z-5230-E | If Needed | Muffler and Tailpipe Assembly – 5.0L Mach 1 (B) | 1 | 1 |
BR3Z-5A231-B  | If Needed | Exhaust Clamp – 2.3L | 1 | 2 |
| FR3Z-5A231-A | If Needed | Exhaust Clamp – 5.0L | 2 | 1 |
Quantity refers to the amount of the service part number required to repair the vehicle.
Unit of Issue refers to the number of individual pieces included in a service part number package.
Piece Quantity refers to the total number of individual pieces required to repair the vehicle.
If Needed indicates the part is not mandatory.
Service Procedure
1. Are DTCs P26FE or P2BFB present?
(1). Yes – proceed to Step 2.
(2). No – proceed to Step 5.
2. Using the appropriate Ford diagnostic scan tool, access datalogger, and view the PCM Parameter Identifications (PIDs). Monitor the EFCV_A_MON_STAT PID while active commanding the PID EFCV_A_CMD PID. Open the tailpipe actuator in 10% increments until it has reached 100% (fully open). Close the tailpipe actuator in 10% increments until it has reached 0% (fully closed). Does the EVCA_A_MON_STAT PID display a mechanical fault at any point?
(1). Yes – proceed to Step 3.
(2). No – proceed to Step 5.
3. Remove the exhaust actuator and inspect for physical binding and/or blockage and repair as necessary. Refer to Workshop Manual (WSM), Section 309-00C.
4. Is the concern still present?
(1). Yes – proceed to Step 5.
(2). No – repair is complete.
5. Inspect the muffler and tailpipe assembly and both catalytic converters for proper positioning of the exhaust clamps securing them together. Make sure the exhaust clamp locking tab is fully engaged to the catalytic converters (Refer to Figure 1). Make sure the knurled/ridge area of the muffler and tailpipe assembly are covered by the exhaust clamps (Refer to Figures 2-3). Adjustments can be made by loosening the exhaust clamps and repositioning the muffler and tailpipe assembly. (Figures 1-3)
Figure 1 – Exhaust clamp locking tabs.
Figure 2 – Non-GT500 exhaust with ridge.
Figure 3 – GT500 exhaust with knurled area.
6. Inspect the exhaust actuator wiring harness for signs of damage. If damage is found, replace the exhaust actuator wiring harness (service base PN: 14A411).
Figure 4 – GT500 shown, other vehicles similar
7. If the concern persists, continue with normal diagnostics found in WSM, Section 309-00C.
6 Affected Products
Vehicle
1 Associated Document
Manufacturer Communications
23-2132
03 May 2023
MC-10236033-0001.pdf 566.523KB
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NHTSA ID Number: 10225443
Manufacturer Communication Number: TSB 22-2282
Summary
Some 2018-2022 Mustang vehicles (non-Shelby GT-350) may exhibit various concerns with the active exhaust system. These may include Drive Mode Not Available or Exhaust Mode Not Available messages, and/or illuminated malfunction indicator lamp (MIL) with diagnostics trouble codes (DTCs) P26C5, P26C6, P26FE, P2BF9, P2BFB, P26C7, P2BF5, P2BF8, P2BFD and/or P2BFA. This may be due to an improperly seated exhaust system. To correct the condition, follow the Service Procedure to diagnose the tailpipe actuator.
1 Associated Document
Manufacturer Communications
22-2282
03 October 2022
MC-10225443-0001.pdf 206.309KB
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NHTSA ID Number: 10211711
Manufacturer Communication Number: TSB 22-2153
Summary
This article supersedes TSB 21-2011 to update the vehicle model years affected and Service Procedure. Some 2018-2022 Mustang vehicles may exhibit various concerns with the active exhaust system. These may include Drive Mode Not Available or Exhaust Mode Not Available messages, and/or illuminated malfunction indicator lamp (MIL) with diagnostics trouble codes (DTCs) P26C5, P26C6, P26FE, P2BF9, P2BFB, P26C7, P2BF5, P2BF8, P2BFD and/or P2BFA. This may be due to an improperly seated exhaust system. To correct the condition, follow the Service Procedure to diagnose the tailpipe actuator.
1 Associated Document
Manufacturer Communications
22-2153
03 May 2022
MC-10211711-0001.pdf 203.474KB
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NHTSA ID Number: 10189765
Manufacturer Communication Number: TSB 21-2011
Summary
Some 2020 Mustang GT500 vehicles built on or before 28-Aug-2020 may exhibit various concerns with the active exhaust system. These may include “Drive Mode Not Available” or “Exhaust Mode Not Available” messages, and/or diagnostic trouble codes (DTCs) P26C5, P26C6, P26FE, P2BF9, P2BFB, P26C7, P2BF5, P2BF8, P2BFD, and/or P2BFA. This may be due to pinched wiring or a misaligned bracket where the exhaust actuator mounts. To correct the condition, follow the Service Procedure to make sure that the exhaust is seated correctly.
1 Associated Document
Manufacturer Communications
21-2011
25 March 2021
MC-10189765-0001.pdf 658.873KB
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5/9/23, 7:20 AM https://www.fordservicecontent.com/Ford_Content/vdirsnet/TSB/EU/~WTSB23-2132/US/EN/~UEmployee/defaul t.aspx?VIN=&versi… https://www.fordservicecontent.com/Ford_Content/vdirsnet/TSB/EU/~WTSB23-2132/US/EN/~UEmployee/defaul t.aspx?VIN=&version=6.0&environme… 1/5 TECHNICAL SERVICE BULLETIN Various Concerns With The Active Exhaust System 23-2132 03 May 2023 This bulletin supersedes 22-2282. Model: Ford 2018-2023 Mustang non-Shelby GT350 Summary This article supersedes TSB 22-2282 to update the vehicle models affected. Issue: Some 2018-2023 Mustang vehicles (non-Shelby GT-350) may exhibit various concerns with the active exhaust system. These may include Exhaust Mode Selection Not Available messages, and/or illuminated malfunction indicator lamp (MIL) with diagnostics trouble codes (DTCs) P26C5, P26C6, P26FE, P2BF9, P2BFB, P26C7, P2BF5, P2BF8, P2BFD and/or P2BFA. This may be due to an improperly seated exhaust system. To correct the condition, follow the Service Procedure to diagnose the tailpipe actuator. Action: Follow the Service Procedure to correct the condition on vehicles that meet all of the following criteria: • 2018-2023 Mustang (non-Shelby GT-350) • Exhibit concerns with the active exhaust system, including but not limited to: – Drive Mode Not Available message in the instrument panel cluster (IPC). – Exhaust Mode Not Available message in the IPC. – Illuminated MIL with DTCs P26C5, P26C6, P26FE, P2BF9, P2BFB, P26C7, P2BF5, P2BF8, P2BFD and/or P2BFA. Parts Service Part Number Quantity Description Unit of Issue Piece Quantity W520111-S424 1 Exhaust Actuator Nuts 4 3 W711687-S300 1 Rear Underbody Shield Tree Fastener 4 2 W718128-S417 2 Rear Underbody Shield Push Pin Fastener 4 6 Parts Parts To Inspect And Replace Only If Necessary Service Part Number Quantity Description Unit of Issue Piece Quantity KR3Z-14A411-G If Needed Exhaust Actuator Harness – GT500/Mach 1 1 1 JR3Z-14A411-H If Needed Exhaust Actuator Harness – 2.3L/5.0L 1 1 JR3Z-6554-A If Needed Exhaust Actuator Service Kit 1 1 KR3Z-5230-P If Needed Muffler and Tailpipe Assembly – GT500 1 1 JR3Z-5230-FC If Needed Muffler and Tailpipe Assembly – 5.0L 1 1 KR3Z-5230-H If Needed Muffler and Tailpipe Assembly – 2.3L 1 1 KR3Z-5230-M If Needed Muffler and Tailpipe Assembly – 5.0L Bullitt 1 1 MR3Z-5230-C If Needed Muffler and Tailpipe Assembly – 5.0L Mach 1 (A) 1 1 MR3Z-5230-E If Needed Muffler and Tailpipe Assembly – 5.0L Mach 1 (B) 1 1 BR3Z-5A231-B If Needed Exhaust Clamp – 2.3L 1 2 FR3Z-5A231-A If Needed Exhaust Clamp – 5.0L 2 1 5/9/23, 7:20 AM https://www.fordservicecontent.com/Ford_Content/vdirsnet/TSB/EU/~WTSB23-2132/US/EN/~UEmployee/defaul t.aspx?VIN=&versi… Quantity refers to the amount of the service part number required to repair the vehicle. Unit of Issue refers to the number of individual pieces included in a service part number package. Piece Quantity refers to the total number of individual pieces required to repair the vehicle. If Needed indicates the part is not mandatory. Warranty Status: Eligible under provisions of New Vehicle Limited Warranty (NVLW)/Emissions Warranty/Service Part Warranty (SPW)/Special Service Part (SSP)/Extended Service Plan (ESP) coverage. Limits/policies/prior approvals are not altered by a TSB. NVLW/Emissions Warranty/SPW/SSP/ESP coverage limits are determined by the identified causal part and verified using the OASIS part coverage tool. Labor Times Description 2018-2023 Mustang: Repair Active Exhaust Concerns Following The Service Procedure Operation No. MT232132 Time Actual Time Repair/Claim Coding Causal Part: 6554 Condition Code: 07 Service Procedure 1. Are DTCs P26FE or P2BFB present? (1). Yes – proceed to Step 2. (2). No – proceed to Step 5. 2. Using the appropriate Ford diagnostic scan tool, access datalogger, and view the PCM Parameter Identifications (PIDs). Monitor the EFCV_A_MON_STAT PID while active commanding the PID EFCV_A_CMD PID. Open the tailpipe actuator in 10% increments until it has reached 100% (fully open). Close the tailpipe actuator in 10% increments until it has reached 0% (fully closed). Does the EVCA_A_MON_STAT PID display a mechanical fault at any point? (1). Yes – proceed to Step 3. (2). No – proceed to Step 5. 3. Remove the exhaust actuator and inspect for physical binding and/or blockage and repair as necessary. Refer to Workshop Manual (WSM), Section 309-00C. 4. Is the concern still present? (1). Yes – proceed to Step 5. (2). No – repair is complete. 5. Inspect the muffler and tailpipe assembly and both catalytic converters for proper positioning of the exhaust clamps securing them together. Make sure the exhaust clamp locking tab is fully engaged to the catalytic converters (Refer to Figure 1). Make sure the knurled/ridge area of the muffler and tailpipe assembly are covered by the exhaust clamps (Refer to Figures 2-3). Adjustments can be made by loosening the exhaust clamps and repositioning the muffler and tailpipe assembly. (Figures 1-3) Figure 1 – Exhaust clamp locking tabs. https://www.fordservicecontent.com/Ford_Content/vdirsnet/TSB/EU/~WTSB23-2132/US/EN/~UEmployee/defaul t.aspx?VIN=&version=6.0&environme… 2/5 5/9/23, 7:20 AM https://www.fordservicecontent.com/Ford_Content/vdirsnet/TSB/EU/~WTSB23-2132/US/EN/~UEmployee/defaul t.aspx?VIN=&versi… Figure 2 – Non-GT500 exhaust with ridge. Figure 3 – GT500 exhaust with knurled area. https://www.fordservicecontent.com/Ford_Content/vdirsnet/TSB/EU/~WTSB23-2132/US/EN/~UEmployee/defaul t.aspx?VIN=&version=6.0&environme… 3/5 5/9/23, 7:20 AM https://www.fordservicecontent.com/Ford_Content/vdirsnet/TSB/EU/~WTSB23-2132/US/EN/~UEmployee/defaul t.aspx?VIN=&versi… 6. Inspect the exhaust actuator wiring harness for signs of damage. If damage is found, replace the exhaust actuator wiring harness (service base PN: 14A411). Figure 4 – GT500 shown, other vehicles similar 7. If the concern persists, continue with normal diagnostics found in WSM, Section 309-00C. © 2023 Ford Motor Company All rights reserved. NOTE: The information in Technical Service Bulletins is intended for use by trained, professional technicians with the knowledge, tools, and equipment to do the job properly and safely. It informs these technicians of conditions that may occur on some vehicles, or provides information that could assist in proper vehicle service. The procedures should not be performed by “do-it-yourselfers”. Do not assume that a condition described affects your car or truck. Contact a Ford or Lincoln dealership to determine whether the Bulletin applies to your vehicle. Warranty Policy https://www.fordservicecontent.com/Ford_Content/vdirsnet/TSB/EU/~WTSB23-2132/US/EN/~UEmployee/defaul t.aspx?VIN=&version=6.0&environme… 4/5 5/9/23, 7:20 AM https://www.fordservicecontent.com/Ford_Content/vdirsnet/TSB/EU/~WTSB23-2132/US/EN/~UEmployee/defaul t.aspx?VIN=&versi… https://www.fordservicecontent.com/Ford_Content/vdirsnet/TSB/EU/~WTSB23-2132/US/EN/~UEmployee/defaul t.aspx?VIN=&version=6.0&environme… 5/5 and Extended Service Plan documentation determine Warranty and/or Extended Service Plan coverage unless stated otherwise in the TSB article. The information in this Technical Service Bulletin (TSB) was current at the time of printing. Ford Motor Company reserves the right de this information with updates. The most recent information is available through Ford Motor Company’s on-line technical resources.
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