EV Diagnostics
Verified EV diagnostic knowledge page

Ford P0A23

board diagnostic module C (SOBDMC) or seconda

DriveUnknown. Do not infer that driving is safe when a “Stop Safely Now” warning is displayed; the supplied evidence does not provide a driving authorization or restriction.
ChargeUnknown. The supplied evidence does not establish whether charging is safe or permitted with P0A23.
ServiceFord service is appropriate, particularly if the instrument cluster displays “Stop Safely Now.” The supplied record does not establish an emergency-service threshold beyond that warning.
Confidence95%

Quick answer

For certain 2020–2021 US Ford Escape and Mustang Mach-E vehicles, DTC P0A23 is documented in Ford SSM 50151 as a code that may be set by the secondary on-board diagnostic module C (SOBDMC), potentially with a “Stop Safely Now” instrument-panel warning.

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

Video guides

Watch Videos

Relevant videos play here without leaving this diagnostic page.

No sufficiently relevant embeddable video has been accepted for this diagnostic yet.

Videos are supporting material and never override OEM or regulator evidence.

1. What does P0A23 mean?

For certain 2020–2021 US Ford Escape and Mustang Mach-E vehicles, DTC P0A23 is documented in Ford SSM 50151 as a code that may be set by the secondary on-board diagnostic module C (SOBDMC), potentially with a “Stop Safely Now” instrument-panel warning.

2. Technical explanation

The verified diagnostic title and meaning are truncated in the supplied record: “board diagnostic module C (SOBDMC) or seconda.” NHTSA-hosted Ford Manufacturer Communication 10201604, SSM 50151, identifies P0A23 among DTCs that may be set by the SOBDMC or secondary system. The supplied evidence does not establish the complete fault definition, root cause, diagnostic procedure, or repair.

3. What system is affected?

Secondary on-board diagnostic module C (SOBDMC) / secondary system, as identified in Ford SSM 50151. A more specific subsystem is not yet established by verified evidence.

4. How serious is this code?

Unknown in the supplied diagnostic record. However, the verified Ford communication states that the condition can begin with a “Stop Safely Now” warning message in the instrument panel cluster.

5. Symptoms you may notice

  • A “Stop Safely Now” warning message in the instrument panel cluster may occur.
  • P0A23 may be stored.
  • One or more additional listed DTCs may be stored.

6. Possible causes

  • Not yet established by verified evidence.

7. Can I still drive the vehicle?

Unknown. Do not infer that driving is safe when a “Stop Safely Now” warning is displayed; the supplied evidence does not provide a driving authorization or restriction.

8. Can I charge the vehicle?

Unknown. The supplied evidence does not establish whether charging is safe or permitted with P0A23.

9. What you can safely do

  • If a “Stop Safely Now” message is displayed, follow the vehicle’s on-screen warning and arrange qualified Ford service.
  • Record all stored diagnostic trouble codes and warning messages for the service visit.
  • Do not attempt high-voltage-system diagnosis or repair yourself.

10. Step-by-step troubleshooting

  1. Have a qualified Ford technician retrieve and assess stored DTCs, including P0A23 and any accompanying codes.
  2. Use Ford service information applicable to the vehicle’s exact model year and configuration. The detailed procedure is not included in the supplied evidence.

11. When to contact service

Ford service is appropriate, particularly if the instrument cluster displays “Stop Safely Now.” The supplied record does not establish an emergency-service threshold beyond that warning.

12. What the service center may check

  • Confirm whether the vehicle is a US-market 2020–2021 Ford Escape or Mustang Mach-E covered by the supplied applicability evidence.
  • Retrieve P0A23 and all accompanying DTCs.
  • Review Ford SSM 50151 / NHTSA Manufacturer Communication 10201604 for the applicable service guidance.

13. Possible repair or resolution

  • Not yet established by verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Ford SSM 50151, published September 24, 2021; NHTSA Manufacturer Communication 10201604. It documents that the condition may start with a “Stop Safely Now” warning and may include P0A23 among codes set by the SOBDMC or secondary system.

16. Recall information

  • No recall is established by the supplied verified evidence.

17. Official manufacturer information

NHTSA Manufacturer Communication 10201604: SSM 50151, published September 24, 2021. URL: https://static.nhtsa.gov/odi/ffdd/tsbs/TSBS_RECEIVED_2020-2024.zip#nhtsa_id=10201604

19. Frequently asked questions

What does Ford P0A23 mean?

The supplied verified record identifies P0A23 with a truncated meaning referring to board diagnostic module C (SOBDMC) or a secondary system. The complete definition is not established by the supplied evidence.

Which vehicles are supported by the supplied evidence?

US-market 2020–2021 Ford Escape and 2020–2021 Ford Mustang Mach-E vehicles.

Can P0A23 appear with a Stop Safely Now warning?

Yes. Ford SSM 50151 states that the condition may start with a “Stop Safely Now” instrument-panel warning and may include P0A23.

What repairs fix P0A23?

Not yet established by verified evidence.

20. Sources & verification

ReferenceVerified
Ford P0A23: board diagnostic module C (SOBDMC) or seconda | EV Diagnostics