Mitsubishi U1926
ECU V-CAN Error . TROUBLE JUDGMENT Check Condition 3 seconds elapse after the electric motor switch is turned ON, or 3 seconds elapse after the main drive lithium-ion battery sta
Quick answer
U1926 is a Mitsubishi i-MiEV EV-ECU V-CAN error code. Verified applicability is limited to the 2016 U.S.-market i-MiEV.
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 U1926 mean?
U1926 is a Mitsubishi i-MiEV EV-ECU V-CAN error code. Verified applicability is limited to the 2016 U.S.-market i-MiEV.
2. Technical explanation
According to Mitsubishi TSB-19-54-005, U1926 may be judged after 3 seconds from turning the electric motor switch ON, or 3 seconds after main drive lithium-ion battery charging begins. The criterion is that the EV-ECU has set either U1073 (Bus-off) or U111C (BMU CAN Timeout).
3. What system is affected?
EV-ECU V-CAN communication. The source also identifies BMU communication through U111C BMU CAN Timeout.
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
- The verified judgment criterion is that the EV-ECU has set U1073 Bus-off or U111C BMU CAN Timeout.
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
- Have the vehicle diagnosed using the Mitsubishi service procedure.
- Do not attempt high-voltage battery or controller repairs yourself.
10. Step-by-step troubleshooting
- The cited Mitsubishi procedure instructs turning the electric motor switch from LOCK (OFF) to ON and confirming whether diagnostic trouble codes are set.
- If the diagnostic trouble code is set, the cited procedure directs replacement of the BMU, referring to page 54D-188.
- If the diagnostic trouble code is not set, the cited procedure identifies an intermittent malfunction and refers to Mitsubishi guidance for coping with intermittent malfunctions.
11. When to contact service
Service is appropriate because the official Mitsubishi procedure specifies confirmation of the DTC and, when set, BMU replacement.
12. What the service center may check
- Confirm whether the diagnostic trouble code is set after cycling the electric motor switch from LOCK (OFF) to ON.
- Determine whether the EV-ECU has set U1073 Bus-off or U111C BMU CAN Timeout.
- Follow the applicable Mitsubishi procedure for BMU replacement if the DTC is confirmed set.
13. Possible repair or resolution
- Mitsubishi TSB-19-54-005 directs replacement of the BMU when the DTC is confirmed set.
- If the DTC is not set, the cited procedure classifies the condition as an intermittent malfunction.
14. Affected vehicles
- Mitsubishi i-MiEV · 2016 · US
15. Related TSBs / service bulletins
- Mitsubishi TSB-19-54-005, published March 13, 2019; NHTSA manufacturer communication PDF 10158410.
16. Recall information
No recall relationship is established by verified evidence.
17. Official manufacturer information
Official source: NHTSA-hosted Mitsubishi manufacturer communication, TSB-19-54-005: https://static.nhtsa.gov/odi/tsbs/2019/MC-10158410-9999.pdf
19. Frequently asked questions
What does U1926 mean?
It is identified in the verified Mitsubishi material as EV-ECU V-CAN Error.
When can U1926 be judged?
After 3 seconds from electric motor switch ON or 3 seconds after main drive lithium-ion battery charging starts, when the specified EV-ECU criteria are present.
Which related faults are listed in the judgment criterion?
U1073 Bus-off and U111C BMU CAN Timeout.
What does Mitsubishi direct if the DTC is set?
The cited procedure directs BMU replacement, with reference to page 54D-188.