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Mitsubishi U11A2

CMU03 time-out, U11A3: CMU04 time-out, U11A4: CMU05 time-out, U11A5: CMU06 time-out, U11A6: CMU07 time-out, U11A7: CMU08 time-out, U11A8: CMU09 time-out, U11A9: CMU10 time-out, U11

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceService need is not explicitly established by the supplied evidence; however, qualified Mitsubishi EV diagnosis is appropriate because this code is stored in the BMU and concerns CMU03 communication.
Confidence95%

Quick answer

U11A2 is a Mitsubishi i-MiEV Battery Management Unit (BMU) diagnostic trouble code for a CMU03 time-out/CAN timeout. Verified applicability is US-market 2012, 2014, and 2016 i-MiEV vehicles.

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 U11A2 mean?

U11A2 is a Mitsubishi i-MiEV Battery Management Unit (BMU) diagnostic trouble code for a CMU03 time-out/CAN timeout. Verified applicability is US-market 2012, 2014, and 2016 i-MiEV vehicles.

2. Technical explanation

Official Mitsubishi service-bulletin material identifies U11A2 as “CMU03 time-out” and “CMU03 CAN Timeout.” The BMU stores this code when its diagnostic judgment conditions are met; the supplied evidence states those conditions include three seconds after the electric motor switch is turned ON, but the complete condition text is not included in the verified evidence provided.

3. What system is affected?

Battery Management Unit (BMU) communication with CMU03. The expansion of “CMU” is not established by the supplied verified evidence.

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

  • A communication time-out involving CMU03 is established by the DTC description.
  • Specific underlying 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

  • Arrange diagnosis by a qualified Mitsubishi EV service provider.
  • Do not attempt high-voltage battery or BMU/CMU repair based on this code alone.

10. Step-by-step troubleshooting

  1. Official bulletin material describes clearing stored BMU diagnostic trouble codes, switching the electric motor switch from LOCK (OFF) to ON, and checking whether the code returns.
  2. Further diagnostic steps, test values, and repair instructions are not established by the supplied verified evidence.

11. When to contact service

Service need is not explicitly established by the supplied evidence; however, qualified Mitsubishi EV diagnosis is appropriate because this code is stored in the BMU and concerns CMU03 communication.

12. What the service center may check

  • Confirm U11A2 is stored in the BMU.
  • Clear stored diagnostic trouble codes.
  • Switch the electric motor switch from LOCK (OFF) to ON.
  • Confirm whether U11A2 is stored again.

13. Possible repair or resolution

  • Not yet established by verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Mitsubishi TSB-19-54-003, published March 13, 2019; NHTSA manufacturer communication MC-10158408.
  • Mitsubishi TSB-19-54-004, published March 13, 2019; NHTSA manufacturer communication MC-10158409.
  • Mitsubishi TSB-19-54-005, published March 13, 2019; NHTSA manufacturer communication MC-10158410.

16. Recall information

  • No recall information was supplied as verified evidence.

17. Official manufacturer information

NHTSA-hosted Mitsubishi manufacturer communications: https://static.nhtsa.gov/odi/tsbs/2019/MC-10158408-9999.pdf ; https://static.nhtsa.gov/odi/tsbs/2019/MC-10158409-9999.pdf ; https://static.nhtsa.gov/odi/tsbs/2019/MC-10158410-9999.pdf

19. Frequently asked questions

What does U11A2 mean?

It means CMU03 time-out, also described in official Mitsubishi bulletin material as CMU03 CAN Timeout.

Which vehicles are verified as applicable?

US-market Mitsubishi i-MiEV model years 2012, 2014, and 2016.

Can I drive or charge with U11A2?

Not yet established by verified evidence.

20. Sources & verification

Verified
Mitsubishi U11A2: CMU03 time-out, U11A3: CMU04 time-out, U11A4: CMU05… | EV Diagnostics