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Mitsubishi P1B0C

Return to Step 1. NO : The diagnosis is complete. DTC P1B0D Quick charging current error (overcurrent) CAUTION If there is any problem in the CAN bus lines, an incorrect DTC may be

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceService evaluation is appropriate because the verified Mitsubishi procedure specifies EV-ECU replacement when P1B0C or P1B21 is stored/set. Driving and charging suitability are not established by the supplied evidence.
Confidence95%

Quick answer

For verified applicability, P1B0C is documented in Mitsubishi i-MiEV service material for U.S. model years 2012, 2014, and 2016. The supplied evidence does not provide a standalone fault definition for P1B0C; its database title/meaning appears to contain neighboring diagnostic text. Official Mitsubishi bulletins instruct technicians to replace the EV-ECU if P1B0C or P1B21 is stored/set, then erase the DTC and recheck after connection of the regular charging cable/connector.

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 P1B0C mean?

For verified applicability, P1B0C is documented in Mitsubishi i-MiEV service material for U.S. model years 2012, 2014, and 2016. The supplied evidence does not provide a standalone fault definition for P1B0C; its database title/meaning appears to contain neighboring diagnostic text. Official Mitsubishi bulletins instruct technicians to replace the EV-ECU if P1B0C or P1B21 is stored/set, then erase the DTC and recheck after connection of the regular charging cable/connector.

2. Technical explanation

The verified NHTSA-hosted Mitsubishi service bulletins place P1B0C in a diagnostic procedure together with P1B21. In that procedure, if P1B0C or P1B21 is stored/set, the instruction is to replace the EV-ECU. The procedure then calls for erasing the DTC, connecting the regular charging cable or connector, and checking whether the DTC returns. If it returns, the procedure directs a return to the beginning of the diagnostic procedure; if it does not return, the diagnosis is complete. The supplied excerpts also state, in adjacent P1B0D diagnostic material, that CAN bus faults can result in an incorrect DTC and that CAN bus diagnosis should be performed before that diagnosis. This evidence does not establish that statement specifically for P1B0C.

3. What system is affected?

EV-ECU is directly identified by the verified diagnostic procedure. A broader system name is not yet established by verified evidence.

4. How serious is this code?

Unknown. The supplied verified evidence does not assign a severity level to P1B0C.

5. Symptoms you may notice

  • Not yet established by verified evidence.

6. Possible causes

  • The verified procedure identifies the EV-ECU as a replacement action when P1B0C or P1B21 is stored/set.
  • A specific root cause for P1B0C is not yet established by verified evidence.
  • CAN bus faults are described as capable of producing an incorrect DTC in adjacent P1B0D material, but this is not established specifically for P1B0C.

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 provider.
  • Do not attempt high-voltage system repair based on this code.
  • Record whether the DTC is stored/set and provide that information to the service provider.

10. Step-by-step troubleshooting

  1. Verified service-procedure actions are intended for trained technicians: check whether P1B0C or P1B21 is stored/set in the EV-ECU.
  2. If P1B0C or P1B21 is stored/set, the cited Mitsubishi procedure instructs replacement of the EV-ECU.
  3. After replacement, the procedure instructs erasing the DTC, connecting the regular charging cable/connector, and checking whether the DTC returns.
  4. If the DTC returns, the procedure instructs returning to Step 1; if it does not return, the diagnosis is complete.

11. When to contact service

Service evaluation is appropriate because the verified Mitsubishi procedure specifies EV-ECU replacement when P1B0C or P1B21 is stored/set. Driving and charging suitability are not established by the supplied evidence.

12. What the service center may check

  • Confirm whether P1B0C or P1B21 is stored/set in the EV-ECU.
  • Follow the applicable Mitsubishi diagnostic procedure.
  • After the specified repair action, erase the DTC and recheck after connecting the regular charging cable/connector.
  • For adjacent P1B0D diagnostic material, Mitsubishi states that CAN bus lines should be diagnosed first because CAN faults can cause an incorrect DTC; applicability of this instruction to P1B0C is not established by the supplied evidence.

13. Possible repair or resolution

  • The verified procedure directs replacement of the EV-ECU when P1B0C or P1B21 is stored/set.
  • Resolution is verified by clearing the DTC, connecting the regular charging cable/connector, and confirming that P1B0C or P1B21 does not return.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Mitsubishi TSB-19-54-003, published March 13, 2019; NHTSA manufacturer communication MC-10158408: https://static.nhtsa.gov/odi/tsbs/2019/MC-10158408-9999.pdf
  • Mitsubishi TSB-19-54-004, published March 13, 2019; NHTSA manufacturer communication MC-10158409: https://static.nhtsa.gov/odi/tsbs/2019/MC-10158409-9999.pdf
  • Mitsubishi TSB-19-54-005, published March 13, 2019; NHTSA manufacturer communication MC-10158410: https://static.nhtsa.gov/odi/tsbs/2019/MC-10158410-9999.pdf

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Verified applicability: Mitsubishi i-MiEV, U.S. model years 2012, 2014, and 2016. Official source material is NHTSA-hosted Mitsubishi manufacturer communications TSB-19-54-003, TSB-19-54-004, and TSB-19-54-005, all published March 13, 2019.

19. Frequently asked questions

What does P1B0C mean?

A standalone meaning for P1B0C is not yet established by the supplied verified evidence. The supplied database title and meaning contain procedural text rather than a distinct P1B0C definition.

What does the Mitsubishi procedure specify if P1B0C is stored?

The cited procedure says to replace the EV-ECU if P1B0C or P1B21 is stored/set, then erase the DTC and check whether it returns after connection of the regular charging cable/connector.

Can I drive or charge with P1B0C?

Not yet established by verified evidence.

Which vehicles are verified as applicable?

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

20. Sources & verification

Verified
Mitsubishi P1B0C: Return to Step 1. NO : The diagnosis is complete.… | EV Diagnostics