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Ford B1578

89 stored in the image processing module A (IPMA) may be present on some of the following Ford and Lincoln vehicles: * 2024 F-150/F-Super D

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceContact a Ford service department for diagnosis, particularly to verify whether the vehicle has B1578:78 and whether the applicable Ford software guidance applies.
Confidence95%

Quick answer

For U.S. 2021–2023 Ford Mustang Mach-E vehicles, verified Ford communications associate DTC B1578:78 in the Image Processing Module A (IPMA) with IPMA software in specified situations. A Ford service department should confirm the exact suffix and vehicle condition before repair.

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 B1578 mean?

For U.S. 2021–2023 Ford Mustang Mach-E vehicles, verified Ford communications associate DTC B1578:78 in the Image Processing Module A (IPMA) with IPMA software in specified situations. A Ford service department should confirm the exact suffix and vehicle condition before repair.

2. Technical explanation

B1578 is reported in the supplied evidence as B1578:78 or B1578:89, stored in the Image Processing Module A (IPMA). For Mustang Mach-E applicability, the verified communications specifically state that B1578:78 may set after an IPMA on-demand self-test and may be due to IPMA software. The supplied evidence does not establish the meaning of generic B1578 without its suffix, nor does it establish that B1578:89 applies to Mustang Mach-E.

3. What system is affected?

Image Processing Module A (IPMA).

4. How serious is this code?

Not yet established by verified evidence.

5. Symptoms you may notice

  • B1578:78 may set after an IPMA on-demand self-test.
  • The supplied Mustang Mach-E evidence references warning messages or inoperative features, but does not identify the specific message or feature for B1578:78.

6. Possible causes

  • For the specified Mustang Mach-E B1578:78 condition, Ford communications state it may be due to software in the IPMA.
  • Other causes are not yet established by verified evidence.

7. Can I still drive the vehicle?

Not yet established by verified evidence.

8. Can I charge the vehicle?

Not yet established by verified evidence.

9. What you can safely do

  • Record the complete diagnostic code, including its suffix (for example, B1578:78 or B1578:89), and any displayed warning messages.
  • Arrange diagnosis with a Ford service department if the code is present or driver-assistance/camera-related functions are unavailable.
  • Do not assume that guidance for B1578:89 applies to a Mustang Mach-E; the supplied evidence does not establish that applicability.

10. Step-by-step troubleshooting

  1. Have a qualified Ford technician retrieve and verify the complete IPMA DTC and associated vehicle condition.
  2. For a 2021–2023 U.S. Mustang Mach-E with B1578:78, ask the technician to review Ford TSB 22-2109 and TSB 22-2295, which identify IPMA software as a possible basis for the listed condition.
  3. Further troubleshooting steps are not established by verified evidence.

11. When to contact service

Contact a Ford service department for diagnosis, particularly to verify whether the vehicle has B1578:78 and whether the applicable Ford software guidance applies.

12. What the service center may check

  • Confirm the exact DTC suffix and that it is stored in the IPMA.
  • Review IPMA on-demand self-test results where relevant.
  • Check applicability of Ford TSB 22-2109 and TSB 22-2295 for the individual vehicle and condition.
  • Evaluate IPMA software according to Ford service procedures.

13. Possible repair or resolution

  • For the B1578:78 condition described in TSB 22-2109 and TSB 22-2295, the verified evidence identifies IPMA software as a possible cause. The supplied summaries do not provide the complete repair procedure or software-update details.
  • Repair outcome is not yet established by verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Ford TSB 22-2109, published March 23, 2022: for conditions including B1578:78 after an IPMA on-demand self-test; the summary states IPMA software may be responsible. NHTSA Manufacturer Communication 10209379.
  • Ford TSB 22-2295, published July 22, 2022: similarly references B1578:78 after an IPMA on-demand self-test and states IPMA software may be responsible. NHTSA Manufacturer Communication 10216463.
  • Ford SSM 53020, published October 5, 2024: references B1578:89 and a reverse-camera message on certain Ford and Lincoln vehicles, but the supplied evidence does not establish Mustang Mach-E applicability.
  • Ford TSB 25-2398, published August 27, 2025: references B1578:78 with a Reverse Brake Assistance Not Available message on vehicles equipped with rear-view camera system only; Mustang Mach-E applicability is not established by the supplied evidence.

16. Recall information

  • No recall is established by the supplied verified evidence.

17. Official manufacturer information

Official NHTSA-hosted manufacturer communications: TSB 22-2109 (NHTSA 10209379), TSB 22-2295 (NHTSA 10216463), SSM 53020 (NHTSA 11008706), and TSB 25-2398 (NHTSA 11022398).

19. Frequently asked questions

What does B1578:78 mean on a 2021–2023 Ford Mustang Mach-E?

The supplied evidence establishes that B1578:78 may set in the IPMA after an IPMA on-demand self-test. It does not provide a fuller code definition.

What can cause B1578:78 on a Mustang Mach-E?

Ford TSB 22-2109 and TSB 22-2295 state that the condition may be due to IPMA software. No other cause is established by the supplied evidence.

Is B1578:89 the same issue on a Mustang Mach-E?

Not established. The supplied SSM 53020 discusses B1578:89 on certain 2024 Ford and Lincoln vehicles, but does not establish Mustang Mach-E applicability.

Is it safe to drive or charge with B1578?

Not yet established by verified evidence.

20. Sources & verification

Verified
Ford B1578: 89 stored in the image processing module A (IPMA) may be… | EV Diagnostics