Mitsubishi P1D16
Pilot Signal (Charge not Allowed) AKB00015 3 G Pilot signal circuit On board charger/ DC-DC converter G-03 Regular charge port E-03 L GR 2 9 G-12 E-03 Wire color code B: Black LG:
Quick answer
P1D16 is a Mitsubishi i-MiEV charge-system DTC described as “Pilot Signal (Charge not Allowed).” Verified service information directs technicians to clear the DTC, perform a regular charge, and check whether P1D16 returns. If it returns, the specified repair is replacement of the on-board charger/DC-DC converter; if it does not, 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 P1D16 mean?
P1D16 is a Mitsubishi i-MiEV charge-system DTC described as “Pilot Signal (Charge not Allowed).” Verified service information directs technicians to clear the DTC, perform a regular charge, and check whether P1D16 returns. If it returns, the specified repair is replacement of the on-board charger/DC-DC converter; if it does not, the bulletin identifies an intermittent malfunction.
2. Technical explanation
The verified Mitsubishi service-bulletin evidence identifies P1D16 as a pilot-signal-circuit fault associated with the on-board charger/DC-DC converter and regular charge port. The evidence states that charging is not allowed under this DTC description. The published diagnostic decision is based on whether the DTC resets after it is erased and a regular charging attempt is performed.
3. What system is affected?
Pilot signal circuit involving the on-board charger/DC-DC converter and regular charge port.
4. How serious is this code?
Not yet established by verified evidence.
5. Symptoms you may notice
- P1D16 is described as “Pilot Signal (Charge not Allowed).”
6. Possible causes
- A pilot signal circuit issue involving the on-board charger/DC-DC converter and regular charge port is identified by the DTC description.
- If P1D16 does not return after being cleared and a regular charge is performed, the official bulletin classifies the condition as an intermittent malfunction.
7. Can I still drive the vehicle?
Not yet established by verified evidence.
8. Can I charge the vehicle?
The DTC description states “Charge not Allowed.” The verified evidence does not establish whether any charging is possible in every vehicle condition.
9. What you can safely do
- Arrange professional diagnosis using the applicable Mitsubishi service procedure.
- Do not attempt high-voltage component repair or replacement yourself.
10. Step-by-step troubleshooting
- A technician clears P1D16.
- A technician performs a regular charge.
- A technician checks whether P1D16 is set again.
- If P1D16 is set again, the bulletin directs replacement of the on-board charger/DC-DC converter.
- If P1D16 is not set again, the bulletin directs diagnosis as an intermittent malfunction according to the referenced troubleshooting guidance.
11. When to contact service
Service involvement is indicated by the official bulletin’s diagnostic and replacement procedure. Use a qualified Mitsubishi EV service provider.
12. What the service center may check
- Confirm whether P1D16 returns after the DTC is erased and a regular charge is performed.
- If the code does not return, follow the manufacturer’s intermittent-malfunction diagnostic guidance.
13. Possible repair or resolution
- If P1D16 returns after the specified test, replace the on-board charger/DC-DC converter.
- If P1D16 does not return after the specified test, address it as an intermittent malfunction using the referenced service guidance.
14. Affected vehicles
- Mitsubishi i-MiEV · 2012–2013 · US
15. Related TSBs / service bulletins
- Mitsubishi TSB-20-54-003, published through NHTSA as Manufacturer Communication PDF 10175779 on 2020-04-22. It contains the P1D16 diagnostic decision: replace the on-board charger/DC-DC converter if the DTC resets after clearing and a regular-charge test; otherwise treat the condition as intermittent.
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Verified official source: NHTSA Manufacturer Communication PDF 10175779, Mitsubishi TSB-20-54-003: https://static.nhtsa.gov/odi/tsbs/2020/MC-10175779-9999.pdf
19. Frequently asked questions
What does P1D16 mean on a Mitsubishi i-MiEV?
Verified service information describes P1D16 as “Pilot Signal (Charge not Allowed)” and associates it with the pilot signal circuit, on-board charger/DC-DC converter, and regular charge port.
What is the documented repair if P1D16 returns?
The bulletin directs replacement of the on-board charger/DC-DC converter if P1D16 is set again after the DTC is cleared and a regular charge is performed.
What if P1D16 does not return after the test?
The bulletin identifies the condition as an intermittent malfunction and refers technicians to the manufacturer’s intermittent-malfunction troubleshooting guidance.
Which vehicles are supported by the verified applicability data?
Mitsubishi i-MiEV, model years 2012 through 2013, US region.