Mitsubishi P1D01
AC Input Voltage (High) DTC P1D02: AC Input Voltage (Over) . TROUBLE JUDGMENT Check Conditions While the on board charger is allowed to be charged from the EV-ECU. Judgment Crit
Quick answer
For a 2012–2013 Mitsubishi i-MiEV (US), DTC P1D01 indicates that the on-board charger detected AC input voltage above 270 V while charging was permitted by the EV-ECU. The documented fail-safe response is that charging stops.
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 P1D01 mean?
For a 2012–2013 Mitsubishi i-MiEV (US), DTC P1D01 indicates that the on-board charger detected AC input voltage above 270 V while charging was permitted by the EV-ECU. The documented fail-safe response is that charging stops.
2. Technical explanation
The verified Mitsubishi service-bulletin evidence identifies P1D01 as “AC Input Voltage (High).” The check condition is while the on-board charger is allowed to charge by the EV-ECU. The judgment criterion for P1D01 is an effective AC input-voltage value greater than 270 V. The same source separately identifies P1D00 as more than 40 V and less than 80 V, and P1D02 as more than 300 V momentarily.
3. What system is affected?
On-board charging system / AC charging input. The diagnostic is evaluated while charging is authorized by the EV-ECU.
4. How serious is this code?
Not yet established by verified evidence. Verified evidence does establish that the charging function stops when this fault is detected.
5. Symptoms you may notice
- Charging stops.
- A P1D01 diagnostic trouble code may be stored.
6. Possible causes
- AC power supply failure at the supply side.
- Charging cable failure.
- On-board charger failure.
7. Can I still drive the vehicle?
Not yet established by verified evidence.
8. Can I charge the vehicle?
No while the documented fail-safe condition is active: the charge is stopped.
9. What you can safely do
- Do not rely on the affected AC charging attempt to continue after P1D01 is detected.
- Have the AC supply, charging cable, and on-board charger evaluated by qualified service personnel.
- Avoid high-voltage repair procedures; the verified evidence does not provide safe owner repair instructions.
10. Step-by-step troubleshooting
- The verified bulletin begins diagnosis by rechecking for diagnostic trouble codes.
- Further diagnostic steps are not established by the supplied verified evidence.
11. When to contact service
Service evaluation is appropriate because verified evidence lists the external AC supply, charging cable, and on-board charger as probable causes, and charging is stopped by the fail-safe function.
12. What the service center may check
- Recheck for diagnostic trouble codes.
- Evaluate the AC power supply at the supply side.
- Evaluate the charging cable.
- Evaluate the on-board charger.
13. Possible repair or resolution
- Not yet established by verified evidence. The supplied bulletin excerpt identifies probable causes but does not establish a specific repair outcome.
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 April 22, 2020. It documents P1D01 as AC Input Voltage (High), the greater-than-270-V criterion, charge-stop fail-safe operation, and the listed probable causes.
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
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 Mitsubishi i-MiEV code P1D01 mean?
For the verified 2012–2013 US i-MiEV applicability, P1D01 means AC Input Voltage (High). The criterion is effective AC input voltage greater than 270 V while the on-board charger is allowed to charge by the EV-ECU.
What happens when P1D01 is detected?
The documented fail-safe and backup function is that charging stops.
What can cause P1D01?
The verified bulletin lists a failed supply-side AC power source, a failed charging cable, or a failed on-board charger as probable causes.
Is P1D01 covered by a recall?
Not yet established by verified evidence.