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Mitsubishi C0034

54-001REV 2. Perform an “Erase and Read All DTCs” again to clear any DTCs that may have set. For instructions, refer to steps 6 and 7 in the “Reprogramming Procedure: Preparation”

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceService involvement is not explicitly classified in the supplied diagnostic record. However, the verified procedure involves software reprogramming and Mitsubishi diagnostic steps, so a qualified Mitsubishi service provider should perform or verify the applicable procedure.
Confidence95%

Quick answer

For Mitsubishi vehicles covered by the supplied evidence, C0034 is shown as a reference within Mitsubishi TSB-19-54-001REV, not as a verified standalone fault definition. The cited instruction is to erase and read all DTCs again after reprogramming, then confirm the software version was updated.

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 C0034 mean?

For Mitsubishi vehicles covered by the supplied evidence, C0034 is shown as a reference within Mitsubishi TSB-19-54-001REV, not as a verified standalone fault definition. The cited instruction is to erase and read all DTCs again after reprogramming, then confirm the software version was updated.

2. Technical explanation

The verified material associates C0034 with Mitsubishi TSB-19-54-001REV and its reprogramming follow-up procedure. After reprogramming, the bulletin instructs technicians to perform “Erase and Read All DTCs” again to clear DTCs that may have set, following steps 6 and 7 in the bulletin’s “Reprogramming Procedure: Preparation.” It then directs confirmation that the software version was updated, using step 5 of that preparation procedure. A separate Mitsubishi bulletin, TSB-19-54-014, identifies changes in Group 54 chassis electrical documentation relating to EV-ECU diagnostic procedures for P0A09—DC-DC Converter, including deletion/addition references involving C0034. The supplied evidence does not establish a standalone component-level definition for C0034.

3. What system is affected?

Not yet established by verified evidence. The cited documents concern Mitsubishi Group 54 chassis electrical material; one source specifically references EV-ECU diagnostic procedures and P0A09—DC-DC Converter.

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

  • 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

  • Have a qualified Mitsubishi service provider review the stored DTCs and applicable service information.
  • If software reprogramming is being performed, do not disturb cables or turn off the ignition during reprogramming, as stated in TSB-19-54-001REV.
  • After reprogramming, perform the bulletin-specified erase-and-read-DTC procedure and confirm the software version update.

10. Step-by-step troubleshooting

  1. Read all DTCs using the applicable Mitsubishi diagnostic procedure.
  2. Where TSB-19-54-001REV applies, follow its reprogramming preparation procedure.
  3. After reprogramming, repeat “Erase and Read All DTCs” as directed by the bulletin.
  4. Confirm the software version has been updated, as directed by the bulletin.

11. When to contact service

Service involvement is not explicitly classified in the supplied diagnostic record. However, the verified procedure involves software reprogramming and Mitsubishi diagnostic steps, so a qualified Mitsubishi service provider should perform or verify the applicable procedure.

12. What the service center may check

  • Determine whether Mitsubishi TSB-19-54-001REV applies to the vehicle.
  • Perform the bulletin’s specified reprogramming procedure when applicable.
  • Perform “Erase and Read All DTCs” again after reprogramming.
  • Confirm the updated software version.
  • Review TSB-19-54-014 where applicable to EV-ECU diagnostic documentation involving P0A09—DC-DC Converter and C0034 references.

13. Possible repair or resolution

  • The verified bulletin procedure calls for clearing DTCs that may have set after reprogramming and confirming the software version update.
  • No component replacement or standalone repair for C0034 is established by the supplied evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Mitsubishi TSB-19-54-001REV, published April 11, 2019: post-reprogramming instructions include repeating “Erase and Read All DTCs” and confirming the updated software version. NHTSA document: https://static.nhtsa.gov/odi/tsbs/2019/MC-10159639-9999.pdf
  • Mitsubishi TSB-19-54-014, published July 16, 2019: documentation revisions in Group 54 involving EV-ECU diagnostic procedures for P0A09—DC-DC Converter and C0034 references. NHTSA document: https://static.nhtsa.gov/odi/tsbs/2019/MC-10163701-9999.pdf

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Verified NHTSA-hosted Mitsubishi manufacturer communications: TSB-19-54-001REV: https://static.nhtsa.gov/odi/tsbs/2019/MC-10159639-9999.pdf ; TSB-19-54-014: https://static.nhtsa.gov/odi/tsbs/2019/MC-10163701-9999.pdf

19. Frequently asked questions

What does C0034 mean?

The supplied evidence does not establish a standalone fault definition. It shows C0034 in Mitsubishi service-bulletin material associated with a post-reprogramming DTC clearing instruction.

Which vehicles are covered by the supplied applicability data?

Mitsubishi Outlander model years 2016–2019 in the United States, and Mitsubishi i-MiEV model years 2012, 2016–2017, and 2016–2019 in the United States. The overlapping i-MiEV ranges are retained as supplied.

Is it safe to drive or charge with C0034?

Not yet established by verified evidence.

What does the bulletin say to do after reprogramming?

Repeat “Erase and Read All DTCs” to clear DTCs that may have set, then confirm that the software version was updated.

20. Sources & verification

ReferenceVerified
Mitsubishi C0034: 54-001REV 2. Perform an “Erase and Read All DTCs”… | EV Diagnostics