Mitsubishi P0ADF
Return to Step 1. NO : The diagnosis is complete. DTC P0AE2 Charging contactor (seizure) DANGER When servicing the high voltage system parts, always shut off the high voltage by
Quick answer
For applicable U.S. Mitsubishi i‑MiEV model years 2012, 2014, and 2016, DTC P0ADF is set when the EV-ECU detects that the excitation-circuit monitor for the main drive lithium-ion battery main contactor (−) is off while that contactor is commanded on.
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 P0ADF mean?
For applicable U.S. Mitsubishi i‑MiEV model years 2012, 2014, and 2016, DTC P0ADF is set when the EV-ECU detects that the excitation-circuit monitor for the main drive lithium-ion battery main contactor (−) is off while that contactor is commanded on.
2. Technical explanation
Mitsubishi’s verified diagnostic material describes P0ADF as an EV-ECU-monitored fault involving the negative main contactor in the main drive lithium-ion battery. Specifically, the code sets when the excitation-circuit monitor of the main contactor (−) is off during a main-contactor (−) ON command. The provided database evidence does not establish a complete plain-language title beyond this description.
3. What system is affected?
EV-ECU and the main drive lithium-ion battery’s main contactor (−) excitation/monitor circuit.
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
- Damaged wiring harness or connector(s).
- Malfunction of the main contactor (+) or main contactor (−) in the main drive lithium-ion battery.
- Malfunction of the EV-ECU.
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 facility.
- Do not attempt high-voltage battery or contactor service yourself. Mitsubishi documentation states that high-voltage work requires high-voltage shutdown using the service plug and appropriate protective equipment.
10. Step-by-step troubleshooting
- Mitsubishi’s diagnostic procedure begins with inspection of main drive lithium-ion battery connectors C-21 and C-22 and EV-ECU connector C-111.
- The supplied evidence confirms that Mitsubishi’s diagnostic flow includes clearing stored DTCs, cycling the electric motor switch from LOCK/OFF to ON and briefly to START, then checking whether P0ADB or P0ADF returns.
- If P0ADB or P0ADF is stored again, Mitsubishi’s flow directs the technician to return to Step 1; if neither returns, the diagnosis is complete.
11. When to contact service
Yes. High-voltage-system diagnosis and repair should be performed by qualified personnel.
12. What the service center may check
- Inspect connectors C-21 and C-22 at the main drive lithium-ion battery and connector C-111 at the EV-ECU.
- Inspect related wiring harnesses and connectors.
- Diagnose the main drive lithium-ion battery main contactors, including the main contactor (−).
- Diagnose the EV-ECU.
- Clear DTCs, cycle the electric motor switch as specified by Mitsubishi, and confirm whether P0ADF returns.
13. Possible repair or resolution
- Not yet established by verified evidence. The supplied material identifies diagnostic areas and probable causes but does not provide a verified repair outcome for P0ADF.
14. Affected vehicles
- Mitsubishi i-MiEV · 2012 · US
- Mitsubishi i-MiEV · 2014 · US
- Mitsubishi i-MiEV · 2016 · US
15. Related TSBs / service bulletins
- Mitsubishi TSB-19-54-005, published March 13, 2019, contains verified P0ADF setting criteria, probable causes, and initial diagnostic steps.
- NHTSA manufacturer communication 10158410: https://static.nhtsa.gov/odi/tsbs/2019/MC-10158410-9999.pdf
- Related supplied manufacturer communications: TSB-19-54-003 (NHTSA 10158408) and TSB-19-54-004 (NHTSA 10158409).
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Verified source: Mitsubishi manufacturer communication TSB-19-54-005, filed with NHTSA as MC-10158410, published March 13, 2019: https://static.nhtsa.gov/odi/tsbs/2019/MC-10158410-9999.pdf
19. Frequently asked questions
What does P0ADF mean on an applicable Mitsubishi i-MiEV?
It means the EV-ECU detected that the excitation-circuit monitor for the main drive lithium-ion battery main contactor (−) was off while that contactor was commanded on.
Which vehicles are established as applicable?
The supplied verified applicability data lists U.S.-market Mitsubishi i-MiEV vehicles for model years 2012, 2014, and 2016.
What can cause P0ADF?
Mitsubishi lists damaged wiring harnesses or connectors, a malfunction of the main drive lithium-ion battery main contactors (+) or (−), and an EV-ECU malfunction as probable causes.
Is it safe to drive or charge with P0ADF?
Not yet established by verified evidence.
Can I inspect or repair the high-voltage system myself?
The verified Mitsubishi material warns that high-voltage service requires shutdown via the service plug and appropriate protective equipment. It does not support DIY high-voltage repair instructions.