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Jeep U0103

Lost communication with Electric Gear Shift Module) are still present, erase them with the scan tool. Reset ECU. 5. if DTCs for loss comm

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceService is appropriate because the verified communication specifies scan-tool work, ECU reset, and inspection/testing of the ESM connector, wiring, and voltage.
Confidence95%

Quick answer

U0103 is identified in the verified manufacturer communication as “Lost communication with Electric Gear Shift Module.”

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 U0103 mean?

U0103 is identified in the verified manufacturer communication as “Lost communication with Electric Gear Shift Module.”

2. Technical explanation

The supplied official manufacturer communication references U0103 together with U11E3 after checks of ESM wiring, voltage, and connector-header pins. It states that when wiring and voltage are good and these loss-of-communication DTCs remain present, they should be erased with a scan tool and the ECU reset. The supplied excerpt ends before any further procedure or conclusion.

3. What system is affected?

Electric Gear Shift Module (ESM) communication. The communication specifically also references the TCM and D-PT CAN for U11E3.

4. How serious is this code?

Not yet established by verified evidence.

5. Symptoms you may notice

Not yet established by verified evidence.

6. Possible causes

  • The official communication directs inspection of the ESM connector header for bent pins.
  • The official communication references checking ESM wiring and voltage.
  • No specific failed component or root cause is established by the supplied 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

  • Arrange diagnosis by a qualified service facility using the applicable manufacturer procedure.
  • Do not attempt high-voltage repairs based on this information.
  • Have the ESM connector header inspected for bent pins and have wiring and voltage checked, as directed in the official communication.

10. Step-by-step troubleshooting

  1. Inspect the ESM connector header for bent pins.
  2. Check wiring and voltage as specified by the applicable manufacturer procedure.
  3. If wiring and voltage are good and U0103 and U11E3 remain present, the communication directs erasing the DTCs with a scan tool and resetting the ECU.
  4. The supplied excerpt is incomplete; no additional diagnostic steps are established by verified evidence.

11. When to contact service

Service is appropriate because the verified communication specifies scan-tool work, ECU reset, and inspection/testing of the ESM connector, wiring, and voltage.

12. What the service center may check

  • Inspect the ESM connector header for bent pins.
  • Check wiring and voltage.
  • Confirm whether U0103 remains present after the applicable checks.
  • Where applicable, erase U0103 and U11E3 with a scan tool and reset the ECU, as stated in the official communication.

13. Possible repair or resolution

  • Not yet established by verified evidence. The supplied communication excerpt does not identify a final repair or replacement action.

14. Affected vehicles

15. Related TSBs / service bulletins

  • NHTSA Manufacturer Communication 11024582: 9100437Rev1, published October 24, 2025. It references U0103 and U11E3, ESM connector-header pin inspection, wiring and voltage checks, DTC clearing, and ECU reset.
  • NHTSA Manufacturer Communication 11010695: 9100437, published November 19, 2024. It contains the same supplied evidence summary.

16. Recall information

No recall relationship is established by verified evidence.

17. Official manufacturer information

Verified applicability is Jeep Grand Cherokee and Jeep Wagoneer, model years 2023–2025, United States. Official source: NHTSA Manufacturer Communication 11024582 (9100437Rev1): https://static.nhtsa.gov/odi/ffdd/tsbs/TSBS_RECEIVED_2025-2026.zip#nhtsa_id=11024582

19. Frequently asked questions

What does U0103 mean?

The verified manufacturer communication identifies U0103 as “Lost communication with Electric Gear Shift Module.”

Which vehicles are covered by the supplied evidence?

Jeep Grand Cherokee and Jeep Wagoneer vehicles for model years 2023 through 2025 in the United States.

Does U0103 prove that the Electric Gear Shift Module has failed?

No. The supplied evidence calls for inspection of connector pins, wiring, and voltage, but does not establish a failed ESM as the root cause.

Can I drive or charge with U0103?

Not yet established by verified evidence.

20. Sources & verification

ReferenceVerified
Jeep U0103: Lost communication with Electric Gear Shift Module) are… | EV Diagnostics