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Ford B15A5

56 DTC(s) returns in the RFA after a self test, follow normal Workshop Manual (WSM) diagnostics, Section 419-01C

DriveUnknown. Whether the vehicle can be driven is not established by verified evidence.
ChargeUnknown. Whether the vehicle can be charged is not established by verified evidence.
ServiceService evaluation is appropriate because Ford directs normal WSM diagnostics when B15A5:56 returns after an RFA self-test. Urgency is not established by verified evidence.
Confidence95%

Quick answer

Ford DTC B15A5:56 indicates that the code returned in the RFA after a self-test. Ford communications direct technicians to follow normal Workshop Manual diagnostics in Section 419-01C.

This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.

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1. What does B15A5 mean?

Ford DTC B15A5:56 indicates that the code returned in the RFA after a self-test. Ford communications direct technicians to follow normal Workshop Manual diagnostics in Section 419-01C.

2. Technical explanation

Verified Ford/NHTSA manufacturer communications state that when B15A5:56 returns in the RFA after a self-test, normal Workshop Manual (WSM) diagnostics in Section 419-01C should be followed. The supplied evidence does not identify a specific failed component, root cause, or repair.

3. What system is affected?

RFA. The full expansion of RFA is not established by the supplied verified evidence.

4. How serious is this code?

Unknown. Severity is not established by verified evidence.

5. Symptoms you may notice

Not yet established by verified evidence.

6. Possible causes

  • Not yet established by verified evidence.

7. Can I still drive the vehicle?

Unknown. Whether the vehicle can be driven is not established by verified evidence.

8. Can I charge the vehicle?

Unknown. Whether the vehicle can be charged is not established by verified evidence.

9. What you can safely do

  • Have the DTC evaluated using Ford Workshop Manual diagnostics, Section 419-01C.
  • Do not attempt high-voltage diagnosis or repair based on this code alone.

10. Step-by-step troubleshooting

  1. A Ford technician should run an RFA self-test and verify whether DTCs remain present, as described in the cited Ford manufacturer communications.
  2. If B15A5:56 returns in the RFA after the self-test, follow normal Ford WSM diagnostics in Section 419-01C.
  3. Specific diagnostic steps beyond that WSM reference are not established by the supplied verified evidence.

11. When to contact service

Service evaluation is appropriate because Ford directs normal WSM diagnostics when B15A5:56 returns after an RFA self-test. Urgency is not established by verified evidence.

12. What the service center may check

  • Run an RFA self-test.
  • Verify whether DTCs remain present.
  • Follow Ford Workshop Manual Section 419-01C if B15A5:56 returns after the self-test.

13. Possible repair or resolution

  • Repair as necessary based on the results of Ford Workshop Manual diagnostics. The specific repair is not established by the supplied verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Ford SSM 49968, published July 21, 2021: If only B15A5:56 and specified B15-series DTCs return in the RFA after a self-test, follow WSM Section 419-01C.
  • Ford SSM 50077, published September 1, 2021: Provides the same direction for B15A5:56 returning in the RFA after a self-test.
  • Ford SSM 50845, published June 8, 2022: Provides the same direction for B15A5:56 returning in the RFA after a self-test.
  • Ford SSM 54555, published February 6, 2026: States that if B15A5:56 returns in the RFA after a self-test, follow normal WSM diagnostics in Section 419-01.

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Official NHTSA-hosted Ford manufacturer communications: SSM 49968 (NHTSA ID 10199511), SSM 50077 (NHTSA ID 10201575), SSM 50845 (NHTSA ID 10214161), and SSM 54555 (NHTSA ID 11028797).

19. Frequently asked questions

What does Ford code B15A5:56 mean?

The supplied diagnostic record defines it as B15A5 — 56 DTC(s) returns in the RFA after a self-test, with direction to follow normal Workshop Manual diagnostics.

What should be done if B15A5:56 returns after an RFA self-test?

Ford manufacturer communications direct normal WSM diagnostics in Section 419-01C; the 2026 communication references Section 419-01.

Does B15A5:56 identify a particular failed part?

No specific failed part is established by the supplied verified evidence.

20. Sources & verification

Verified
Ford B15A5: 56 DTC(s) returns in the RFA after a self test, follow… | EV Diagnostics