Mitsubishi P1D45
Failure Detection Circuit . TROUBLE JUDGMENT Check Conditions When the charging cable is connected. Judgment Criterion The system detects overcurrent detection signal by prede-
Quick answer
For a 2012–2013 Mitsubishi i-MiEV in the US, DTC P1D45 is a Failure Detection Circuit code evaluated when the charging cable is connected. The verified service bulletin directs erasing the code, performing a regular charge, and checking whether it resets. If it resets, replace the on-board charger/DC-DC converter; if it does not reset, 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 P1D45 mean?
For a 2012–2013 Mitsubishi i-MiEV in the US, DTC P1D45 is a Failure Detection Circuit code evaluated when the charging cable is connected. The verified service bulletin directs erasing the code, performing a regular charge, and checking whether it resets. If it resets, replace the on-board charger/DC-DC converter; if it does not reset, the bulletin identifies an intermittent malfunction.
2. Technical explanation
Verified NHTSA-posted Mitsubishi TSB-20-54-003 states that P1D45 is judged when the charging cable is connected. It can set when the system detects an overcurrent-detection signal a predetermined number of times or more during a voltage-rise section, or an overvoltage-detection signal a predetermined number of times or more during rectification. The supplied evidence is truncated after the rectification description, so further operating conditions are not yet established by verified evidence.
3. What system is affected?
The verified bulletin’s repair direction identifies the on-board charger/DC-DC converter as the component to replace if P1D45 resets after the specified charge test.
4. How serious is this code?
Not yet established by verified evidence.
5. Symptoms you may notice
- P1D45 may be stored when the charging cable is connected.
- The supplied verified evidence does not establish additional driver-visible symptoms.
6. Possible causes
- The verified bulletin describes repeated overcurrent-detection signals during voltage rise or repeated overvoltage-detection signals during rectification as P1D45 judgment criteria.
- If P1D45 is present again after code erasure and a regular charge, the bulletin directs replacement of the on-board charger/DC-DC converter.
- If P1D45 does not return during the specified test, the 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?
Not yet established by verified evidence.
9. What you can safely do
- Use the manufacturer-specified diagnostic sequence: erase the DTC, perform a regular charge, and check whether P1D45 is set again.
- Have diagnosis and any on-board charger/DC-DC converter replacement performed by qualified EV service personnel.
10. Step-by-step troubleshooting
- Erase DTC P1D45.
- Perform a regular charge.
- Check whether DTC P1D45 is set after the charge.
- If the DTC is set, replace the on-board charger/DC-DC converter, following the referenced Mitsubishi service information.
- If the DTC is not set, address it as an intermittent malfunction using the manufacturer’s intermittent-malfunction diagnostic guidance.
11. When to contact service
Service is appropriate if P1D45 is present, especially if it returns after the erase-and-regular-charge test. The verified Mitsubishi bulletin specifies on-board charger/DC-DC converter replacement when the DTC resets.
12. What the service center may check
- Confirm P1D45 is stored.
- Erase the DTC.
- Perform a regular charge.
- Confirm whether P1D45 returns.
- If it returns, replace the on-board charger/DC-DC converter as directed by the bulletin.
- If it does not return, evaluate as an intermittent malfunction.
13. Possible repair or resolution
- If P1D45 returns after the specified test, Mitsubishi TSB-20-54-003 directs replacement of the on-board charger/DC-DC converter.
- If P1D45 does not return after the specified test, the bulletin identifies an intermittent malfunction.
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 includes the P1D45 test and repair direction described here.
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. Verified applicability supplied: 2012–2013 Mitsubishi i-MiEV, US.
19. Frequently asked questions
What does P1D45 mean on a Mitsubishi i-MiEV?
The verified Mitsubishi bulletin labels P1D45 as “Failure Detection Circuit.” It is evaluated when the charging cable is connected.
What should happen if P1D45 returns after it is erased?
The verified bulletin directs replacement of the on-board charger/DC-DC converter if the code is set after erasing it and performing a regular charge.
What if P1D45 does not return after a regular charge?
The bulletin identifies this result as an intermittent malfunction.
Which vehicles are established by the supplied evidence?
The supplied verified applicability covers US-market 2012–2013 Mitsubishi i-MiEV vehicles.