Mitsubishi P1AA0
CMU ID change (CMU06), P1AA1: CMU ID change (CMU07), P1AA2: CMU ID change (CMU08), P1AA3: CMU ID change (CMU09), P1AA4: CMU ID change (CMU10), P1AA5: CMU ID change (CMU11), P1AA6:
Quick answer
P1AA0 is a Mitsubishi battery-management diagnostic trouble code for a CMU ID change involving CMU06. It is documented in Mitsubishi TSB-19-54-003 and TSB-19-54-004 for specified U.S. i-MiEV model years.
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 P1AA0 mean?
P1AA0 is a Mitsubishi battery-management diagnostic trouble code for a CMU ID change involving CMU06. It is documented in Mitsubishi TSB-19-54-003 and TSB-19-54-004 for specified U.S. i-MiEV model years.
2. Technical explanation
The verified TSB evidence identifies P1AA0 as “CMU ID change (CMU06).” CMU refers to a battery-monitoring unit used with the Battery Management Unit (BMU) and main drive lithium-ion battery. The supplied evidence does not establish the underlying cause, vehicle behavior, diagnostic procedure, or repair for this code.
3. What system is affected?
Battery Management Unit (BMU) and main drive lithium-ion battery; CMU06 identification.
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 CMU ID change involving CMU06 is the condition named by P1AA0.
- The 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
- Arrange diagnosis by a Mitsubishi dealer or qualified EV service provider.
- Do not attempt high-voltage battery or CMU repair yourself.
10. Step-by-step troubleshooting
- Verified evidence identifies P1AA0 as a CMU06 ID-change code.
- Further diagnostic steps are not yet established by the supplied verified evidence.
11. When to contact service
Service need is not yet established by verified evidence; however, diagnosis by a Mitsubishi dealer or qualified EV service provider is appropriate because the code concerns the BMU and main drive lithium-ion battery.
12. What the service center may check
- Confirm the stored DTC is P1AA0.
- Use the applicable Mitsubishi service information, including TSB-19-54-003 or TSB-19-54-004, for professional diagnosis.
- Additional service checks are not yet established by verified evidence.
13. Possible repair or resolution
- Not yet established by verified evidence.
14. Affected vehicles
- Mitsubishi i-MiEV · 2012 · US
- Mitsubishi i-MiEV · 2014 · US
15. Related TSBs / service bulletins
- Mitsubishi TSB-19-54-003, published March 13, 2019, includes P1AA0: CMU ID change (CMU06).
- Mitsubishi TSB-19-54-004, published March 13, 2019, includes P1AA0: CMU ID change (CMU06).
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Official NHTSA-hosted manufacturer communications: TSB-19-54-003 (https://static.nhtsa.gov/odi/tsbs/2019/MC-10158408-9999.pdf) and TSB-19-54-004 (https://static.nhtsa.gov/odi/tsbs/2019/MC-10158409-9999.pdf).
19. Frequently asked questions
What does Mitsubishi P1AA0 mean?
Verified Mitsubishi TSB evidence defines P1AA0 as “CMU ID change (CMU06).”
Which vehicles are verified as applicable?
The supplied applicability evidence covers U.S. Mitsubishi i-MiEV vehicles for model years 2012 and 2014.
Is it safe to drive or charge with P1AA0?
Not yet established by verified evidence.