EV Diagnostics
Verified EV diagnostic knowledge page

Ford U0103:87

Eligible under provisions of New Vehicle Limited Warranty (NVLW)/Service Part Warranty (SPW)/Special Service Part (SSP)/Extended Service Plan (ESP) coverage. Limits/policies/prior

Common search variants: U010387 · U0103-87 · U0103 87 · U0103_87 · Search ignores case and common separators.

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceContact a Ford dealer or qualified Ford service facility if U0103:87 is stored with the wrench indicator and/or “Shift System Fault” message, particularly for an eligible 2021 Mustang Mach-E built on or before September 9, 2021.
Confidence95%

Quick answer

For certain 2021 US Ford Mustang Mach-E vehicles built on or before September 9, 2021, Ford TSB 21-2405 addresses an illuminated powertrain malfunction (wrench) indicator and/or a “Shift System Fault” message with DTC U0103:87. The bulletin directs service to reprogram the GSM.

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 U0103:87 mean?

For certain 2021 US Ford Mustang Mach-E vehicles built on or before September 9, 2021, Ford TSB 21-2405 addresses an illuminated powertrain malfunction (wrench) indicator and/or a “Shift System Fault” message with DTC U0103:87. The bulletin directs service to reprogram the GSM.

2. Technical explanation

The supplied verified evidence identifies U0103:87 in the context of Ford TSB 21-2405. The bulletin applies when the specified vehicle/build-date criteria and the stated warning/message condition are present. Its service procedure calls for GSM reprogramming. The evidence does not establish a general technical definition of U0103:87 beyond this bulletin context.

3. What system is affected?

GSM, as named in Ford TSB 21-2405. The full expansion or function of GSM is not yet established by verified evidence.

4. How serious is this code?

Not yet established by verified evidence.

5. Symptoms you may notice

  • Illuminated powertrain malfunction (wrench) indicator.
  • “Shift System Fault” message displayed.

6. Possible causes

  • Not yet established by verified evidence. Ford TSB 21-2405 identifies GSM reprogramming as the prescribed correction for qualifying vehicles and conditions.

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

  • Confirm whether the vehicle is a 2021 US Ford Mustang Mach-E built on or before September 9, 2021.
  • If the wrench indicator or “Shift System Fault” message is present with U0103:87, arrange Ford service for evaluation under TSB 21-2405.
  • Do not assume warranty coverage; Ford states coverage limits and policies are determined by the identified causal part and verified using OASIS part coverage information.

10. Step-by-step troubleshooting

  1. Have a qualified Ford service facility verify the stored DTC and applicable vehicle build date.
  2. Have the service facility determine whether TSB 21-2405 applies.
  3. If applicable, follow the bulletin’s service procedure to reprogram the GSM.

11. When to contact service

Contact a Ford dealer or qualified Ford service facility if U0103:87 is stored with the wrench indicator and/or “Shift System Fault” message, particularly for an eligible 2021 Mustang Mach-E built on or before September 9, 2021.

12. What the service center may check

  • Verify model year, US applicability, and build date.
  • Verify the illuminated wrench indicator and/or “Shift System Fault” message.
  • Verify DTC U0103:87.
  • Determine eligibility for Ford TSB 21-2405.
  • Verify applicable warranty coverage using OASIS part coverage information, as stated by Ford.

13. Possible repair or resolution

  • For vehicles meeting the bulletin criteria, Ford TSB 21-2405 directs technicians to reprogram the GSM.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Ford TSB 21-2405, published November 17, 2021 (NHTSA Manufacturer Communication PDF 10203653). It applies to 2021 Mustang Mach-E vehicles built on or before September 9, 2021 when the powertrain malfunction wrench indicator and/or “Shift System Fault” message is present with U0103:87. The prescribed action is GSM reprogramming.

16. Recall information

  • No recall information is established by the supplied verified evidence.

17. Official manufacturer information

Official source: NHTSA-hosted Ford manufacturer communication, TSB 21-2405, PDF MC-10203653-0001: https://static.nhtsa.gov/odi/tsbs/2021/MC-10203653-0001.pdf

19. Frequently asked questions

Which vehicles are covered by the supplied evidence?

2021 Ford Mustang Mach-E vehicles in the US, built on or before September 9, 2021, when the bulletin’s listed condition and U0103:87 are present.

What warning signs are identified in Ford TSB 21-2405?

An illuminated powertrain malfunction (wrench) indicator and/or a displayed “Shift System Fault” message.

What does the bulletin direct technicians to do?

Follow the service procedure to reprogram the GSM.

Is repair covered by warranty?

Ford states the repair may be eligible under NVLW, SPW, SSP, or ESP coverage, but limits, policies, and prior approvals are not altered by a TSB. Coverage is determined by the identified causal part and verified using OASIS part coverage information.

20. Sources & verification

Verified
Ford U0103:87: Eligible under provisions of New Vehicle Limited… | EV Diagnostics