Mitsubishi P1C06
DCDC IGCT Voltage Abnormal 21 AKC00310 EV-ECUEV-ECU EARTH FUSIBLE LINK RELAY BOX EV CONTROL RELAY ON BOARD CHARGER/ DC-DC CONVERTER Wire colour code B : Black LG : Light green G :
Quick answer
P1C06 is identified by Mitsubishi as “DCDC IGCT Voltage Abnormal 21” for the 2012–2013 US-market i-MiEV. The verified Mitsubishi service bulletin directs replacement of the on-board charger/DC-DC converter if the DTC is confirmed as set after its diagnostic procedure.
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 P1C06 mean?
P1C06 is identified by Mitsubishi as “DCDC IGCT Voltage Abnormal 21” for the 2012–2013 US-market i-MiEV. The verified Mitsubishi service bulletin directs replacement of the on-board charger/DC-DC converter if the DTC is confirmed as set after its diagnostic procedure.
2. Technical explanation
The verified evidence identifies P1C06 as a DC-DC converter-related diagnostic trouble code: “DCDC IGCT Voltage Abnormal 21.” Mitsubishi TSB-20-54-003 includes a diagnostic flow that asks whether the DTC is set. If yes, the instruction is to replace the on-board charger/DC-DC converter. If no, Mitsubishi identifies the condition as an intermittent malfunction and refers technicians to its intermittent-malfunction diagnostic procedures.
3. What system is affected?
On-board charger/DC-DC converter system, including the EV-ECU and referenced grounding, fusible-link relay-box, and EV-control-relay circuit context.
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
- A confirmed P1C06 leads Mitsubishi’s cited diagnostic flow to replacement of the on-board charger/DC-DC converter.
- If P1C06 is not set when checked under the bulletin procedure, Mitsubishi classifies the result as an intermittent malfunction.
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 the vehicle diagnosed using Mitsubishi TSB-20-54-003 or equivalent manufacturer service information.
- Do not attempt high-voltage component diagnosis, disassembly, or replacement without qualified EV service training and appropriate procedures.
10. Step-by-step troubleshooting
- Follow the Mitsubishi TSB-20-54-003 diagnostic procedure and check whether P1C06 is set.
- If the DTC is set, the bulletin directs replacement of the on-board charger/DC-DC converter.
- If the DTC is not set, Mitsubishi directs technicians to intermittent-malfunction troubleshooting guidance.
11. When to contact service
Contact a Mitsubishi dealer or qualified EV service facility for diagnosis and any required on-board charger/DC-DC converter work.
12. What the service center may check
- Confirm whether DTC P1C06 is set under the TSB diagnostic procedure.
- If the code is not present at the check, perform manufacturer intermittent-malfunction diagnostic procedures.
13. Possible repair or resolution
- For a confirmed/set P1C06 under Mitsubishi TSB-20-54-003, replace the on-board charger/DC-DC converter.
- For a DTC that is not set during the bulletin check, investigate as an intermittent malfunction using Mitsubishi procedures.
14. Affected vehicles
- Mitsubishi i-MiEV · 2012–2013 · US
15. Related TSBs / service bulletins
- Mitsubishi TSB-20-54-003, published April 22, 2020; NHTSA Manufacturer Communication PDF 10175779. It contains diagnostic information for P1C06 and directs on-board charger/DC-DC converter replacement when the DTC is confirmed set.
16. Recall information
No recall relationship is established by verified evidence.
17. Official manufacturer information
Verified official source: NHTSA-hosted Mitsubishi Manufacturer Communication PDF 10175779, TSB-20-54-003: https://static.nhtsa.gov/odi/tsbs/2020/MC-10175779-9999.pdf
19. Frequently asked questions
What does Mitsubishi P1C06 mean?
The verified Mitsubishi bulletin identifies P1C06 as “DCDC IGCT Voltage Abnormal 21.”
What vehicle applicability is verified for P1C06?
Verified applicability is Mitsubishi i-MiEV, model years 2012–2013, US market.
What does Mitsubishi direct if P1C06 is set?
The cited Mitsubishi bulletin directs replacement of the on-board charger/DC-DC converter.
Is it safe to drive or charge with P1C06?
Not yet established by verified evidence.