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Mitsubishi U11A5

CMU06 time-out, U11A6: CMU07 time-out, U11A7: CMU08 time-out, U11A8: CMU09 time-out, U11A9: CMU10 time-out, U11AA: CMU11 time-out, U11AB: CMU12 time-out . M S B - 1 7 M 5 4 _ 5 5 -

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceService need is not yet established by verified evidence; however, professional diagnosis is appropriate because the code concerns the BMU/main drive lithium-ion battery system.
Confidence95%

Quick answer

U11A5 indicates a CMU06 time-out/CAN time-out. Verified Mitsubishi service information groups it with CMU01–CMU12 communication time-out codes.

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 U11A5 mean?

U11A5 indicates a CMU06 time-out/CAN time-out. Verified Mitsubishi service information groups it with CMU01–CMU12 communication time-out codes.

2. Technical explanation

The verified Mitsubishi/NHTSA service-bulletin evidence identifies U11A5 as “CMU06 time-out” or “CMU06 CAN Timeout.” The listed check condition is that three seconds have elapsed after the electric motor switch is turned ON, or three seconds have elapsed after the main drive lithium-ion battery starts charging. The supplied evidence does not establish a specific failed component or repair for an individual vehicle.

3. What system is affected?

Battery Management Unit (BMU) and main drive lithium-ion battery system, based on the section title in the verified service information.

4. How serious is this code?

Not yet established by verified evidence.

5. Symptoms you may notice

  • A U11A5 diagnostic trouble code may be stored or set.
  • The code-check condition can occur after the electric motor switch is turned ON or after main drive lithium-ion battery charging begins.

6. Possible causes

  • A CMU06 communication/CAN time-out is established by verified evidence.
  • A specific underlying cause is 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

  • Have the vehicle evaluated by a Mitsubishi-qualified service facility.
  • Do not attempt high-voltage battery or battery-management-system repairs yourself.

10. Step-by-step troubleshooting

  1. Verified service information instructs technicians to erase stored diagnostic trouble codes, turn the electric motor switch from LOCK (OFF) to ON, and confirm whether the code returns.
  2. The supplied evidence does not establish further diagnostic steps for U11A5.

11. When to contact service

Service need is not yet established by verified evidence; however, professional diagnosis is appropriate because the code concerns the BMU/main drive lithium-ion battery system.

12. What the service center may check

  • Confirm whether U11A5 is stored or set after the electric motor switch is turned from LOCK (OFF) to ON.
  • The supplied TSB evidence states that the relevant judgment condition occurs three seconds after switch-on or three seconds after charging of the main drive lithium-ion battery begins.

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: identifies U11A5 as CMU06 time-out.
  • Mitsubishi TSB-19-54-004, published March 13, 2019: identifies U11A5 as CMU06 time-out.
  • Mitsubishi TSB-19-54-005, published March 13, 2019: identifies U11A5 as CMU06 CAN Timeout.

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Official 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 U11A5 mean?

It means CMU06 time-out; another verified Mitsubishi bulletin describes it as CMU06 CAN Timeout.

Which vehicles are covered by the supplied applicability evidence?

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

Is it safe to drive or charge with U11A5?

Not yet established by verified evidence.

20. Sources & verification

Verified
Mitsubishi U11A5: CMU06 time-out, U11A6: CMU07 time-out, U11A7: CMU08… | EV Diagnostics