EV Diagnostics
Verified EV diagnostic knowledge page

Mitsubishi P1B07

Return to Step 1. NO : The diagnosis is complete. DTC P1B06 Maximum cell temperature abnormality during charging CAUTION If there is any problem in the CAN bus lines, an incorrect

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceService need is not explicitly established by the supplied data, but the verified procedure is a technician diagnostic process involving CAN diagnosis and EV-ECU DTC checks. Use a qualified Mitsubishi EV service provider.
Confidence95%

Quick answer

For 2012, 2014, and 2016 Mitsubishi i-MiEV vehicles in the U.S., P1B07 is referenced in Mitsubishi charging-related diagnostic procedures. The supplied evidence does not establish a standalone meaning for P1B07. It directs technicians to repeat diagnosis from Step 1 if P1B07 is present after a charge-and-recheck procedure.

This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.

Video guides

Watch Videos

Relevant videos play here without leaving this diagnostic page.

No sufficiently relevant embeddable video has been accepted for this diagnostic yet.

Videos are supporting material and never override OEM or regulator evidence.

1. What does P1B07 mean?

For 2012, 2014, and 2016 Mitsubishi i-MiEV vehicles in the U.S., P1B07 is referenced in Mitsubishi charging-related diagnostic procedures. The supplied evidence does not establish a standalone meaning for P1B07. It directs technicians to repeat diagnosis from Step 1 if P1B07 is present after a charge-and-recheck procedure.

2. Technical explanation

Official Mitsubishi service-bulletin material published through NHTSA instructs technicians to erase stored DTCs, charge the traction battery using the regular/normal or quick-charge connector, and then recheck the EV-ECU. If P1B04, P1B05, or P1B07 is stored or set again, the procedure says to return to Step 1. If none is present, diagnosis is complete. The same material cautions that a CAN bus problem can cause an incorrect DTC and says CAN bus lines must be diagnosed before this diagnosis. It also states that the BMU communicates with the EV-ECU through CAN.

3. What system is affected?

The verified evidence identifies communication between the Battery Management Unit (BMU) and EV-ECU via CAN. It does not establish a standalone component-level fault definition for P1B07.

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 CAN bus problem can result in an incorrect DTC, according to the official diagnostic material.
  • Any further cause specific to P1B07 is 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.
  • Provide the stored-code details and charging history to the service provider.
  • Do not attempt high-voltage battery, BMU, EV-ECU, or CAN wiring repairs yourself.

10. Step-by-step troubleshooting

  1. The official procedure requires CAN bus diagnosis before this charging-related diagnostic path because CAN faults may create an incorrect DTC.
  2. The official recheck sequence is: erase the DTCs, connect a normal/regular or quick-charging connector to charge the battery, then check whether the DTC is stored again in the EV-ECU.
  3. If P1B04, P1B05, or P1B07 is present again after the recheck, the official procedure says to return to Step 1.
  4. If those codes are not present after the recheck, the official procedure says diagnosis is complete.

11. When to contact service

Service need is not explicitly established by the supplied data, but the verified procedure is a technician diagnostic process involving CAN diagnosis and EV-ECU DTC checks. Use a qualified Mitsubishi EV service provider.

12. What the service center may check

  • Diagnose CAN bus lines before this diagnostic procedure.
  • Check DTC status in the EV-ECU.
  • Erase stored DTCs.
  • Charge the traction battery using the normal/regular or quick-charge connector.
  • Recheck whether P1B04, P1B05, or P1B07 is stored or set.

13. Possible repair or resolution

  • If P1B04, P1B05, or P1B07 is set again, return to Step 1 of the applicable official diagnostic procedure.
  • If none of these codes is present on recheck, the official procedure states that diagnosis is complete.
  • A specific repair for P1B07 is not yet established by verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Mitsubishi TSB-19-54-003, published through NHTSA on March 13, 2019: includes a charge-and-recheck step for P1B04, P1B05, and P1B07; repeated presence directs the technician to return to Step 1.
  • Mitsubishi TSB-19-54-004, published through NHTSA on March 13, 2019: includes the same recheck direction and states that CAN bus issues can cause incorrect DTCs.
  • Mitsubishi TSB-19-54-005, published through NHTSA on March 13, 2019: includes the same recheck direction and refers to CAN Bus Diagnostics Table procedures.

16. Recall information

No recall relationship is established by verified evidence.

17. Official manufacturer information

Verified official sources: NHTSA manufacturer communications for Mitsubishi TSB-19-54-003, TSB-19-54-004, and TSB-19-54-005, published March 13, 2019. TSB-19-54-004: https://static.nhtsa.gov/odi/tsbs/2019/MC-10158409-9999.pdf ; TSB-19-54-005: https://static.nhtsa.gov/odi/tsbs/2019/MC-10158410-9999.pdf ; TSB-19-54-003: https://static.nhtsa.gov/odi/tsbs/2019/MC-10158408-9999.pdf

19. Frequently asked questions

What does Mitsubishi i-MiEV code P1B07 mean?

The supplied verified evidence does not establish a standalone meaning for P1B07. It establishes that P1B07 is one of the codes checked after charging and DTC clearing in an official Mitsubishi diagnostic procedure.

What should happen if P1B07 returns after charging?

The official procedure says to return to Step 1 if P1B07, P1B04, or P1B05 is stored or set again after the charge-and-recheck process.

Can a CAN fault affect this diagnosis?

Yes. The official material cautions that a CAN bus-line problem may cause an incorrect DTC and requires CAN bus diagnosis before this diagnostic path.

Which vehicles are covered by the supplied applicability evidence?

2012, 2014, and 2016 Mitsubishi i-MiEV vehicles in the U.S.

20. Sources & verification

Verified
Mitsubishi P1B07: Return to Step 1. NO : The diagnosis is complete.… | EV Diagnostics