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Mitsubishi P1A94

CMU07 balancer abnormal, P1A95: CMU08 balancer abnormal, P1A96: CMU09 balancer abnormal, P1A97: CMU10 balancer abnormal, P1A98: CMU11 balancer abnormal, P1A99: CMU12 balancer abnor

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceService evaluation is appropriate because the official Mitsubishi procedure directs BMU replacement when P1A94 is stored. Driveability, charging suitability, and urgency are not yet established by verified evidence.
Confidence95%

Quick answer

P1A94 is a Mitsubishi diagnostic trouble code for “CMU07 balancer abnormal.” Verified applicability is limited to U.S.-specification 2012 and 2014 Mitsubishi 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 P1A94 mean?

P1A94 is a Mitsubishi diagnostic trouble code for “CMU07 balancer abnormal.” Verified applicability is limited to U.S.-specification 2012 and 2014 Mitsubishi i-MiEV vehicles.

2. Technical explanation

The supplied official Mitsubishi service-bulletin evidence identifies P1A94 as “CMU07 balancer abnormal.” The same bulletin lists neighboring codes P1A8E through P1A99 for CMU01 through CMU12 balancer abnormalities. In the cited diagnostic step, if the code is stored when checked with scan tool MB991958, the bulletin directs replacement of the Battery Management Unit (BMU).

3. What system is affected?

Battery Management Unit (BMU) and main drive lithium-ion battery system. The exact underlying component-level failure mechanism is not yet established by 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

  • An abnormality associated with CMU07 balancing is established by the code definition.
  • The official diagnostic procedure cited in the supplied evidence directs BMU replacement when P1A94 is stored. A more specific root 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 code confirmed and diagnosed using the applicable Mitsubishi procedure and scan tool MB991958.
  • Arrange evaluation by a qualified Mitsubishi EV service facility.
  • Do not attempt high-voltage battery or Battery Management Unit repair yourself.

10. Step-by-step troubleshooting

  1. Use scan tool MB991958 to determine whether P1A94 is stored, as described in the cited Mitsubishi bulletin.
  2. If P1A94 is stored, the cited bulletin directs replacement of the BMU.
  3. If P1A94 is not stored, the cited bulletin states that the check is complete.

11. When to contact service

Service evaluation is appropriate because the official Mitsubishi procedure directs BMU replacement when P1A94 is stored. Driveability, charging suitability, and urgency are not yet established by verified evidence.

12. What the service center may check

  • Confirm whether DTC P1A94 is stored using scan tool MB991958.
  • Follow the applicable Mitsubishi diagnostic procedure for the BMU and main drive lithium-ion battery system.
  • When P1A94 is stored, replace the BMU as directed by the cited bulletin.

13. Possible repair or resolution

  • Official bulletin-directed resolution when P1A94 is stored: replace the Battery Management Unit (BMU).
  • No additional repair, programming, verification, or post-repair steps are established by the supplied verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Mitsubishi TSB-19-54-004, published March 13, 2019: lists P1A94 as “CMU07 balancer abnormal” and directs BMU replacement if the code is stored during the referenced scan-tool diagnostic step. NHTSA document: https://static.nhtsa.gov/odi/tsbs/2019/MC-10158409-9999.pdf
  • Mitsubishi TSB-19-54-003, published March 13, 2019: lists P1A94 as “CMU07 balancer abnormal” and directs BMU replacement if the code is stored during the referenced scan-tool diagnostic step. NHTSA document: https://static.nhtsa.gov/odi/tsbs/2019/MC-10158408-9999.pdf

16. Recall information

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

17. Official manufacturer information

Verified applicability: Mitsubishi i-MiEV, U.S. market, model years 2012 and 2014. Official evidence is from NHTSA-hosted Mitsubishi manufacturer communications TSB-19-54-003 and TSB-19-54-004, both published March 13, 2019.

19. Frequently asked questions

What does P1A94 mean on a Mitsubishi i-MiEV?

It means “CMU07 balancer abnormal,” according to the supplied official Mitsubishi bulletin evidence.

What does the Mitsubishi bulletin say to do if P1A94 is stored?

The cited diagnostic step says to replace the Battery Management Unit (BMU) if the diagnostic trouble code is stored.

Can I drive or charge with P1A94?

Not yet established by verified evidence.

Which vehicles are verified as applicable?

U.S.-specification 2012 and 2014 Mitsubishi i-MiEV vehicles.

20. Sources & verification

Verified
Mitsubishi P1A94: CMU07 balancer abnormal, P1A95: CMU08 balancer… | EV Diagnostics