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Mitsubishi P1C23

Battery Sensing Voltage Abnormal AKC00220 ON BOARD CHARGER/ DC-DC CONVERTER Wire colour code B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue BR : B

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceContact a qualified Mitsubishi EV service provider for diagnosis and any on-board charger/DC-DC converter work.
Confidence95%

Quick answer

For a 2012–2013 US Mitsubishi i-MiEV, DTC P1C23 means “Battery Sensing Voltage Abnormal.” Mitsubishi’s TSB-20-54-003 directs replacement of the on-board charger/DC-DC converter if the DTC is confirmed as set during the specified check; if it is not set, the bulletin identifies an intermittent malfunction.

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 P1C23 mean?

For a 2012–2013 US Mitsubishi i-MiEV, DTC P1C23 means “Battery Sensing Voltage Abnormal.” Mitsubishi’s TSB-20-54-003 directs replacement of the on-board charger/DC-DC converter if the DTC is confirmed as set during the specified check; if it is not set, the bulletin identifies an intermittent malfunction.

2. Technical explanation

Verified evidence identifies P1C23 as Battery Sensing Voltage Abnormal and places the diagnostic information in the on-board charger/DC-DC converter section. The supplied official Mitsubishi/NHTSA bulletin excerpt instructs a check for whether the DTC is set. A confirmed set DTC leads to on-board charger/DC-DC converter replacement under the bulletin’s procedure. If the DTC is not set, the bulletin classifies it as an intermittent malfunction and refers technicians to Mitsubishi’s intermittent-malfunction diagnostic guidance.

3. What system is affected?

On-board charger/DC-DC converter; battery-sensing voltage monitoring.

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 P1C23 is addressed by Mitsubishi TSB-20-54-003 through replacement of the on-board charger/DC-DC converter.
  • If P1C23 is not set during the specified check, the bulletin identifies 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 the Mitsubishi procedure in TSB-20-54-003.
  • Do not attempt high-voltage component repair or on-board charger/DC-DC converter replacement without qualified EV service training and the manufacturer procedure.

10. Step-by-step troubleshooting

  1. Perform the bulletin’s specified DTC check after operating the ignition switch as described in Mitsubishi TSB-20-54-003.
  2. If P1C23 is set, Mitsubishi directs replacement of the on-board charger/DC-DC converter, referring to the OBC Removal & Installation procedure in the TSB.
  3. If P1C23 is not set, treat it as an intermittent malfunction and follow Mitsubishi’s referenced intermittent-malfunction guidance.

11. When to contact service

Contact a qualified Mitsubishi EV service provider for diagnosis and any on-board charger/DC-DC converter work.

12. What the service center may check

  • Check whether DTC P1C23 is set using the procedure specified in TSB-20-54-003.
  • If the code is not set during the specified check, apply the manufacturer’s intermittent-malfunction diagnostic process.

13. Possible repair or resolution

  • If P1C23 is confirmed set, replace the on-board charger/DC-DC converter according to Mitsubishi TSB-20-54-003 and its referenced OBC Removal & Installation procedure.
  • If P1C23 is not set during the specified check, the bulletin designates the condition as intermittent; further resolution is not established by the supplied verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Mitsubishi TSB-20-54-003, published April 22, 2020; NHTSA manufacturer communication MC-10175779. It includes P1C23 diagnostic information 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

Official source: NHTSA manufacturer communication MC-10175779, Mitsubishi TSB-20-54-003: https://static.nhtsa.gov/odi/tsbs/2020/MC-10175779-9999.pdf

19. Frequently asked questions

What does P1C23 mean on a Mitsubishi i-MiEV?

Verified evidence defines P1C23 as “Battery Sensing Voltage Abnormal.”

What Mitsubishi vehicles does the supplied evidence cover?

The supplied applicability evidence covers US-market 2012–2013 Mitsubishi i-MiEV vehicles.

What does Mitsubishi instruct if P1C23 is set?

TSB-20-54-003 directs replacement of the on-board charger/DC-DC converter, using the referenced OBC Removal & Installation procedure.

What if P1C23 is not set during Mitsubishi’s check?

The bulletin identifies the condition as an intermittent malfunction and refers to Mitsubishi’s intermittent-malfunction guidance.

Is it safe to drive or charge with P1C23?

Not yet established by verified evidence.

20. Sources & verification

Verified
Mitsubishi P1C23: Battery Sensing Voltage Abnormal AKC00220 ON BOARD… | EV Diagnostics