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Mitsubishi P1AFE

ECU. (1) Erase the stored DTC. (2) Connect the quick charging connector to charg e the battery fully. (3) Check if the DTC is stored. Q: Is the DTC stored? YES <DTC P1AFA> : Go to

DriveUnknown. Verified evidence does not establish whether the vehicle can be driven with P1AFE stored.
ChargeUnknown. The official procedure uses the quick-charging connector for a controlled diagnostic recheck, but this does not establish general charging safety or availability with P1AFE present.
ServiceService involvement is appropriate because the official procedure routes a returning P1AFE to subsequent Mitsubishi diagnostic steps whose details are not included in the verified evidence.
Confidence95%

Quick answer

P1AFE is documented in Mitsubishi i-MiEV EV-ECU diagnostic procedures. Verified evidence directs a DTC recheck after CAN-bus-line resetting: erase the DTC, connect the quick-charging connector to fully/completely charge the battery, then check whether P1AFE returns. If it returns, the official procedure routes P1AFE to a later diagnostic step.

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 P1AFE mean?

P1AFE is documented in Mitsubishi i-MiEV EV-ECU diagnostic procedures. Verified evidence directs a DTC recheck after CAN-bus-line resetting: erase the DTC, connect the quick-charging connector to fully/completely charge the battery, then check whether P1AFE returns. If it returns, the official procedure routes P1AFE to a later diagnostic step.

2. Technical explanation

The supplied official Mitsubishi TSB evidence groups P1AFE with P1AFA, P1AFF, and P1B00 during an EV-ECU recheck. The verified procedure is: erase the stored DTC, connect the quick-charging connector to charge the battery fully/completely, and recheck for DTC storage. If P1AFE is not stored after this check, the procedure states that diagnosis is complete. If P1AFE is stored, the procedure directs the technician to Step 15 in TSB-19-54-003/004 or Step 17 in TSB-19-54-005. The supplied excerpts do not establish the content of those later steps, a component-level fault definition, or a specific repair for P1AFE.

3. What system is affected?

EV-ECU. The official excerpts also reference CAN bus lines and the quick-charging connector during the prescribed recheck.

4. How serious is this code?

Unknown. Verified evidence does not assign a severity level for P1AFE.

5. Symptoms you may notice

  • Not yet established by verified evidence.

6. Possible causes

  • Not yet established by verified evidence.

7. Can I still drive the vehicle?

Unknown. Verified evidence does not establish whether the vehicle can be driven with P1AFE stored.

8. Can I charge the vehicle?

Unknown. The official procedure uses the quick-charging connector for a controlled diagnostic recheck, but this does not establish general charging safety or availability with P1AFE present.

9. What you can safely do

  • Arrange diagnosis by a qualified Mitsubishi EV service professional.
  • Do not perform high-voltage connector, relay, wiring, or voltage-measurement work yourself.
  • Provide the stored-code status and any scan-tool results to the service facility.

10. Step-by-step troubleshooting

  1. Official diagnostic recheck: erase the stored DTC.
  2. Connect the quick-charging connector and charge the battery fully/completely, as specified in the applicable official procedure.
  3. Recheck whether P1AFE is stored in the EV-ECU.
  4. If P1AFE is no longer stored, the cited procedure states that diagnosis is complete.
  5. If P1AFE remains stored, follow the applicable official Mitsubishi diagnostic procedure: Step 15 in TSB-19-54-003/004 or Step 17 in TSB-19-54-005.

11. When to contact service

Service involvement is appropriate because the official procedure routes a returning P1AFE to subsequent Mitsubishi diagnostic steps whose details are not included in the verified evidence.

12. What the service center may check

  • Confirm whether P1AFE returns after the prescribed erase, full quick-charge, and recheck sequence.
  • Follow Step 15 of TSB-19-54-003 or TSB-19-54-004 if P1AFE returns.
  • Follow Step 17 of TSB-19-54-005 if P1AFE returns.
  • TSB-19-54-005 also directs a scan-tool check for EV-ECU DTCs P1019, P101A, P102E, or P102F in its P1AFA diagnostic branch; the supplied evidence does not establish that this check applies specifically to P1AFE.

13. Possible repair or resolution

  • If P1AFE does not return after the official recheck, the cited procedure states that diagnosis is complete.
  • If P1AFE returns, the repair resolution is not yet established by the supplied verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Mitsubishi TSB-19-54-003, published March 13, 2019; NHTSA Manufacturer Communication MC-10158408-9999: includes P1AFE in an EV-ECU DTC recheck and directs a returning P1AFE to Step 15.
  • Mitsubishi TSB-19-54-004, published March 13, 2019; NHTSA Manufacturer Communication MC-10158409-9999: includes P1AFE in an EV-ECU DTC recheck and directs a returning P1AFE to Step 15.
  • Mitsubishi TSB-19-54-005, published March 13, 2019; NHTSA Manufacturer Communication MC-10158410-9999: includes P1AFE in an EV-ECU DTC recheck and directs a returning P1AFE to Step 17.

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Verified applicability: US-market Mitsubishi i-MiEV model years 2012, 2014, and 2016. Official source material is available through NHTSA 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 P1AFE mean?

The supplied verified evidence identifies it as an EV-ECU DTC within Mitsubishi diagnostic procedures, but it does not provide a component-level plain-language definition.

What is the official first recheck for P1AFE?

Erase the DTC, connect the quick-charging connector to fully/completely charge the battery, then check whether P1AFE is stored again.

What if P1AFE does not return?

The cited official procedure states that diagnosis is complete.

What if P1AFE returns?

The official procedure directs the diagnosis to a later step: Step 15 in TSB-19-54-003/004 or Step 17 in TSB-19-54-005. The supplied evidence does not include those steps.

Which vehicles are verified as applicable?

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

20. Sources & verification

Verified
Mitsubishi P1AFE: ECU. (1) Erase the stored DTC. (2) Connect the quick… | EV Diagnostics