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Mitsubishi P1AFA

Return to Step 1. NO : The diagnosis is complete. DTC P1AFB Quick charging time time-out CAUTION If there is any problem in the CAN bus lines, an incorrect DTC may be stored. Prior

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence. The verified procedure specifically uses a quick-charging connection to check whether the DTC returns, but it does not establish that charging is safe or unsafe with this code present.
ServiceService evaluation is appropriate because the verified Mitsubishi procedure requires CAN-bus diagnosis and EV-ECU/BMU diagnostic checks. High-voltage and network diagnosis should be performed by qualified personnel.
Confidence95%

Quick answer

For certain U.S. Mitsubishi i-MiEV model years (2012, 2014, and 2016), verified Mitsubishi/NHTSA service information identifies DTC P1AFA in an EV-ECU diagnostic procedure associated with quick-charging diagnosis. The supplied record’s code title/meaning is truncated and does not establish a plain-language definition for P1AFA.

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 P1AFA mean?

For certain U.S. Mitsubishi i-MiEV model years (2012, 2014, and 2016), verified Mitsubishi/NHTSA service information identifies DTC P1AFA in an EV-ECU diagnostic procedure associated with quick-charging diagnosis. The supplied record’s code title/meaning is truncated and does not establish a plain-language definition for P1AFA.

2. Technical explanation

Verified service information instructs technicians to check CAN bus lines before this diagnosis because a CAN-bus problem can cause an incorrect DTC to be stored or set. The procedure includes clearing the DTC, connecting a quick-charging gun/connector, and checking whether P1AFA returns. If P1AFA returns, the procedure directs a return to Step 1; if it does not return, that diagnostic procedure is complete. The same supplied service excerpts state that the BMU communicates with the EV-ECU through CAN. The excerpts also transition to a separate DTC, P1AFB, described as “Quick charging time time-out” or “Quick Charging Time Over”; this description is not verified as the definition of P1AFA.

3. What system is affected?

Verified evidence identifies the EV-ECU, Battery Management Unit (BMU), CAN communication, and the quick-charging diagnostic process. A more specific affected component for P1AFA is not yet established by verified evidence.

4. How serious is this code?

Unknown. Severity is not established by the supplied verified evidence.

5. Symptoms you may notice

Not yet established by verified evidence.

6. Possible causes

  • A CAN bus-line problem can cause an incorrect DTC to be stored or set, according to the verified Mitsubishi service information.
  • Other causes of P1AFA are 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. The verified procedure specifically uses a quick-charging connection to check whether the DTC returns, but it does not establish that charging is safe or unsafe with this code present.

9. What you can safely do

  • Arrange diagnosis by a qualified Mitsubishi EV service provider.
  • Provide the stored code and explain whether it returns after a quick-charge attempt.
  • Do not attempt high-voltage battery, charging-system, or CAN-bus repairs yourself.

10. Step-by-step troubleshooting

  1. Verified service procedure: diagnose CAN bus lines before proceeding, because CAN faults can result in an incorrect stored or set DTC.
  2. Verified service procedure: erase the stored/set DTC, connect the quick-charging gun/connector, and check whether P1AFA is stored/set again.
  3. If P1AFA is stored/set again, the supplied procedure directs the technician to return to Step 1.
  4. If P1AFA is not stored/set again, the supplied procedure states that the diagnosis is complete.

11. When to contact service

Service evaluation is appropriate because the verified Mitsubishi procedure requires CAN-bus diagnosis and EV-ECU/BMU diagnostic checks. High-voltage and network diagnosis should be performed by qualified personnel.

12. What the service center may check

  • Check CAN bus lines before P1AFA diagnosis.
  • Use EV-ECU diagnostic equipment to erase and recheck the DTC after connecting a quick-charging gun/connector.
  • Determine whether P1AFA returns after the verified recheck procedure.
  • Follow the applicable Mitsubishi diagnostic procedure beginning at Step 1 if P1AFA returns.

13. Possible repair or resolution

  • A specific repair for P1AFA is not yet established by verified evidence.
  • The verified evidence only establishes the recheck decision: if P1AFA does not return after the stated quick-charge check, that diagnostic procedure is complete.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Mitsubishi TSB-19-54-003, published March 13, 2019; available through NHTSA as manufacturer communication MC-10158408-9999.
  • Mitsubishi TSB-19-54-004, published March 13, 2019; available through NHTSA as manufacturer communication MC-10158409-9999.
  • Mitsubishi TSB-19-54-005, published March 13, 2019; available through NHTSA as manufacturer communication MC-10158410-9999.

16. Recall information

No recall relationship is established by verified evidence.

17. Official manufacturer information

Official NHTSA-hosted Mitsubishi service documents supplied as evidence: 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 P1AFA mean?

The supplied record does not provide a complete, verified plain-language definition of P1AFA. It places P1AFA in a Mitsubishi EV-ECU quick-charging diagnostic procedure.

Can a CAN fault affect this code?

Yes. The verified Mitsubishi information warns that a problem in the CAN bus lines can cause an incorrect DTC to be stored or set.

What happens if P1AFA does not return after the service recheck?

The supplied Mitsubishi procedure says the diagnosis is complete if P1AFA is not stored or set again after the stated recheck.

Is P1AFA the same as P1AFB?

Not established. The supplied excerpts separately identify P1AFB as quick-charging time time-out/Quick Charging Time Over; they do not establish that description as the meaning of P1AFA.

20. Sources & verification

Verified
Mitsubishi P1AFA: Return to Step 1. NO : The diagnosis is complete.… | EV Diagnostics