Mitsubishi P1B06
Return to Step 1. NO : The diagnosis is complete. DTC P1B0C On board charging current error (overcurrent) DTC P1B21 On board charger output current error CAUTION If there is any p
Quick answer
For the specified Mitsubishi i-MiEV applications, P1B06 is documented in Mitsubishi diagnostic procedures. The supplied evidence does not establish a plain-language fault definition for P1B06 itself. After DTC clearing and charging, if P1B06 is not stored again, Mitsubishi states the diagnosis is complete; if it returns, the procedure directs a return to Step 1.
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 P1B06 mean?
For the specified Mitsubishi i-MiEV applications, P1B06 is documented in Mitsubishi diagnostic procedures. The supplied evidence does not establish a plain-language fault definition for P1B06 itself. After DTC clearing and charging, if P1B06 is not stored again, Mitsubishi states the diagnosis is complete; if it returns, the procedure directs a return to Step 1.
2. Technical explanation
Verified Mitsubishi service material includes P1B06 in an EV-ECU diagnostic confirmation step. The documented process is to erase the stored DTC, connect a normal/regular charging connector or quick-charging connector, charge the battery, and check whether P1B06 is stored or set again. A recurring P1B06 directs the technician back to the beginning of the diagnostic procedure. The supplied excerpts also caution that a CAN bus problem can cause an incorrect DTC to be stored or set, and state that CAN bus lines should always be diagnosed before this diagnosis. The evidence does not provide the preceding diagnostic steps or establish a complete root-cause list for P1B06.
3. What system is affected?
EV-ECU diagnostic process; CAN bus lines are specifically referenced in the supplied Mitsubishi procedure.
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 problem in the CAN bus lines may cause an incorrect DTC to be stored or set, according to the supplied Mitsubishi service material.
- Other causes of P1B06 are not yet established by verified evidence.
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
- Arrange diagnosis by a qualified Mitsubishi EV service provider.
- Do not attempt high-voltage battery, charging-system, or CAN-bus repairs without appropriate training and service procedures.
10. Step-by-step troubleshooting
- The verified Mitsubishi procedure says CAN bus lines should be diagnosed before this diagnosis because CAN bus problems may cause an incorrect DTC.
- The procedure includes erasing the DTC, charging using a normal/regular or quick-charging connector, and checking whether P1B06 returns.
- If P1B06 returns, Mitsubishi directs the diagnostic process back to Step 1.
- The supplied evidence does not include the full Step 1 procedure; further troubleshooting is not yet established by verified evidence.
11. When to contact service
Service is appropriate because the verified procedure requires EV-ECU DTC evaluation and CAN bus diagnosis. A qualified Mitsubishi EV service provider should follow the applicable factory procedure.
12. What the service center may check
- Check for P1B06 in the EV-ECU.
- Diagnose CAN bus lines before proceeding with the P1B06 diagnosis, as directed by Mitsubishi.
- Erase the stored/set DTC.
- Connect the normal/regular charging connector or quick-charging connector and charge the battery.
- Check whether P1B06 is stored or set again.
- If P1B06 returns, return to Step 1 of the applicable Mitsubishi diagnostic procedure.
13. Possible repair or resolution
- If P1B06 does not return after the documented erase-and-charge confirmation check, Mitsubishi states the diagnosis is complete.
- If P1B06 returns, the supplied procedure directs a return to Step 1; the ultimate repair is not established by the supplied excerpts.
14. Affected vehicles
- Mitsubishi i-MiEV · 2012 · US
- Mitsubishi i-MiEV · 2014 · US
- Mitsubishi i-MiEV · 2016 · US
15. Related TSBs / service bulletins
- Mitsubishi TSB-19-54-003, published March 13, 2019; available through NHTSA as Manufacturer Communication PDF 10158408: https://static.nhtsa.gov/odi/tsbs/2019/MC-10158408-9999.pdf
- Mitsubishi TSB-19-54-004, published March 13, 2019; available through NHTSA as Manufacturer Communication PDF 10158409: https://static.nhtsa.gov/odi/tsbs/2019/MC-10158409-9999.pdf
- Mitsubishi TSB-19-54-005, published March 13, 2019; available through NHTSA as Manufacturer Communication PDF 10158410: https://static.nhtsa.gov/odi/tsbs/2019/MC-10158410-9999.pdf
16. Recall information
No recall relationship is established by verified evidence.
17. Official manufacturer information
Verified source: Mitsubishi manufacturer communications filed with NHTSA. The supplied evidence applies to U.S. Mitsubishi i-MiEV model years 2012, 2014, and 2016. It does not establish applicability to other model years, markets, or Mitsubishi vehicles.
19. Frequently asked questions
What does P1B06 mean on the Mitsubishi i-MiEV?
The supplied verified evidence does not establish a plain-language fault definition for P1B06. It documents P1B06 as an EV-ECU DTC that is checked again after DTC clearing and a charging attempt.
Can a CAN bus problem trigger P1B06 incorrectly?
Mitsubishi states that a problem in the CAN bus lines can cause an incorrect DTC to be stored or set and instructs technicians to diagnose CAN bus lines before this diagnosis.
What happens if P1B06 does not return after charging?
The Mitsubishi procedure states that the diagnosis is complete if P1B06 is not stored or set again after the specified confirmation check.
What happens if P1B06 returns?
The Mitsubishi procedure directs the technician to return to Step 1. The supplied excerpts do not include that full step sequence.