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Mitsubishi P1AA6

CMU ID change (CMU12), . TROUBLE JUDGMENT Check Conditions  When the CMUs are numbered for identification.  Either one of the following diagnostic trouble codes is not sto red. a

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceService need is listed as unknown in the supplied diagnostic record. Because this code concerns CMU identification information, qualified Mitsubishi EV service evaluation is prudent; urgency is not established by verified evidence.
Confidence95%

Quick answer

P1AA6 is a Mitsubishi i-MiEV diagnostic trouble code for “CMU ID change (CMU12).” Verified bulletin evidence says it is judged when CMUs are numbered for identification, U1925 is not stored, and identification-number information has been modified.

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 P1AA6 mean?

P1AA6 is a Mitsubishi i-MiEV diagnostic trouble code for “CMU ID change (CMU12).” Verified bulletin evidence says it is judged when CMUs are numbered for identification, U1925 is not stored, and identification-number information has been modified.

2. Technical explanation

The verified Mitsubishi service-bulletin excerpt identifies P1AA6 as “CMU ID change (CMU12).” The stated check condition is when CMUs are numbered for identification and U1925, “CMU ID numbering reception error,” is not stored. The stated judgment criterion is that identification-number information is modified. The supplied evidence does not establish the underlying reason that the information was modified, nor a specific repair procedure.

3. What system is affected?

CMU identification numbering; CMU12 is specifically named. The full system name is not established by the supplied verified evidence.

4. How serious is this code?

Unknown. Severity is not established by verified evidence.

5. Symptoms you may notice

  • Not yet established by verified evidence.

6. Possible causes

  • Identification-number information is modified, according to the verified diagnostic judgment criterion.
  • The underlying cause of that modification 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 qualified Mitsubishi EV service provider.
  • Do not attempt high-voltage battery or CMU repair procedures without appropriate manufacturer training and equipment.

10. Step-by-step troubleshooting

  1. Confirm the stored DTC is P1AA6.
  2. Check whether U1925, described in the bulletin as “CMU ID numbering reception error,” is stored; the stated P1AA6 check condition requires U1925 not to be stored.
  3. Use the applicable Mitsubishi diagnostic information to evaluate modified CMU identification-number information. Further diagnostic steps are not established by the supplied evidence.

11. When to contact service

Service need is listed as unknown in the supplied diagnostic record. Because this code concerns CMU identification information, qualified Mitsubishi EV service evaluation is prudent; urgency is not established by verified evidence.

12. What the service center may check

  • Verify P1AA6 and review accompanying stored codes.
  • Determine whether U1925 is stored.
  • Assess CMU identification-number information using applicable Mitsubishi service procedures.

13. Possible repair or resolution

  • Not yet established by verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • TSB-19-54-004, published March 13, 2019, includes P1AA6 as “CMU ID change (CMU12).”
  • TSB-19-54-003, published March 13, 2019, includes P1AA6 as “CMU ID change (CMU12).”

16. Recall information

  • No recall information was supplied as verified evidence.

17. Official manufacturer information

Official NHTSA-hosted manufacturer communications: TSB-19-54-004 (https://static.nhtsa.gov/odi/tsbs/2019/MC-10158409-9999.pdf) and TSB-19-54-003 (https://static.nhtsa.gov/odi/tsbs/2019/MC-10158408-9999.pdf). Verified applicability in the supplied data is U.S.-market 2012 and 2014 Mitsubishi i-MiEV.

19. Frequently asked questions

What does P1AA6 mean?

It means “CMU ID change (CMU12),” according to the verified Mitsubishi bulletin evidence.

What condition sets P1AA6?

The bulletin states that CMUs are numbered for identification, U1925 is not stored, and identification-number information is modified.

Is P1AA6 safe to drive or charge with?

Not yet established by verified evidence.

Which vehicles are verified as applicable?

The supplied data verifies U.S.-market 2012 and 2014 Mitsubishi i-MiEV vehicles.

20. Sources & verification

Verified
Mitsubishi P1AA6: CMU ID change (CMU12), . TROUBLE JUDGMENT Check… | EV Diagnostics