Mitsubishi U3D01
06) i n the ECM or PHEV-ECU, respectively. Remember to perform the Compulsion Boot Mode in the module where the DTC is present. This should
Quick answer
For U3D01 on a 2022–2025 Mitsubishi Outlander in the US, verified evidence links the code in the PHEV-ECU to a completely discharged 12 V auxiliary battery in 2023–2024 Outlander Plug-In Hybrid vehicles. The supplied evidence does not establish a complete code definition beyond that excerpt.
This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.
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 U3D01 mean?
For U3D01 on a 2022–2025 Mitsubishi Outlander in the US, verified evidence links the code in the PHEV-ECU to a completely discharged 12 V auxiliary battery in 2023–2024 Outlander Plug-In Hybrid vehicles. The supplied evidence does not establish a complete code definition beyond that excerpt.
2. Technical explanation
An official NHTSA-hosted Mitsubishi Tech Talk communication (TECH TALK 287, published July 24, 2025) states that when the 12 V auxiliary battery completely discharges, a 2023–2024 Outlander Plug-In Hybrid may have DTC U3D01-06 in the PHEV-ECU. The communication also says to perform Compulsion Boot Mode in the module where the DTC is present. The provided evidence does not include the full procedure or establish why the 12 V battery discharged.
3. What system is affected?
PHEV-ECU, according to the supplied NHTSA-hosted manufacturer communication.
4. How serious is this code?
Not yet established by verified evidence. The diagnostic record lists severity as unknown.
5. Symptoms you may notice
- A completely discharged 12 V auxiliary battery is the condition identified in the supplied official communication.
- The supplied evidence identifies U3D01-06 as a DTC that may be present in the PHEV-ECU for affected 2023–2024 Outlander Plug-In Hybrid vehicles.
6. Possible causes
- A completely discharged 12 V auxiliary battery is identified by the supplied official communication in connection with U3D01-06.
- The underlying reason for the 12 V auxiliary-battery discharge is not yet established by verified evidence.
7. Can I still drive the vehicle?
Not yet established by verified evidence. The diagnostic record lists safe-to-drive status as unknown.
8. Can I charge the vehicle?
Not yet established by verified evidence. The diagnostic record lists safe-to-charge status as unknown.
9. What you can safely do
- Do not attempt high-voltage-system repairs based on this code.
- Have a qualified Mitsubishi service provider evaluate the vehicle, particularly if the 12 V auxiliary battery has completely discharged.
- Provide the stored DTC and the 12 V battery-discharge history to the service provider.
10. Step-by-step troubleshooting
- Verify whether the stored code is U3D01-06 and whether it is recorded in the PHEV-ECU.
- Verify whether the 12 V auxiliary battery was completely discharged.
- The supplied communication directs technicians to perform Compulsion Boot Mode in the module where the DTC is present; no further procedure is provided in the supplied evidence.
11. When to contact service
Service evaluation is appropriate because the supplied official communication specifies a module-level Compulsion Boot Mode action, but the provided evidence does not contain the procedure.
12. What the service center may check
- Confirm the DTC location in the PHEV-ECU.
- Assess whether the 12 V auxiliary battery completely discharged.
- Perform Compulsion Boot Mode in the module containing the DTC, as stated in TECH TALK 287.
- Further service checks are not yet established by verified evidence.
13. Possible repair or resolution
- The supplied evidence identifies Compulsion Boot Mode in the module where the DTC is present as a required action.
- A complete repair or final resolution is not yet established by verified evidence.
14. Affected vehicles
- Mitsubishi Outlander · 2022–2025 · US
15. Related TSBs / service bulletins
- NHTSA Manufacturer Communication PDF 11021739: Mitsubishi TECH TALK 287, published July 24, 2025. It states that U3D01-06 may be present in the PHEV-ECU when a 12 V auxiliary battery completely discharges in a 2023–2024 Outlander Plug-In Hybrid.
16. Recall information
- No recall is established by the supplied evidence.
17. Official manufacturer information
Official source: NHTSA-hosted Mitsubishi manufacturer communication, TECH TALK 287 (MC-11021739-0001), published July 24, 2025: https://static.nhtsa.gov/odi/tsbs/2025/MC-11021739-0001.pdf
19. Frequently asked questions
What does U3D01-06 indicate on an Outlander Plug-In Hybrid?
The supplied official communication associates U3D01-06 in the PHEV-ECU with instances in which the 12 V auxiliary battery completely discharges. A full code definition is not established by the supplied evidence.
Which vehicles are covered by the supplied evidence?
The source specifically mentions 2023–2024 Mitsubishi Outlander Plug-In Hybrid vehicles. The diagnostic applicability record also lists US-market Mitsubishi Outlander model years 2022–2025, but the supplied source excerpt specifically identifies 2023–2024 Plug-In Hybrid vehicles.
Can I continue driving or charging?
Not yet established by verified evidence. The supplied diagnostic record lists both safe-to-drive and safe-to-charge status as unknown.
What action does the manufacturer communication identify?
It says to perform Compulsion Boot Mode in the module where the DTC is present. For U3D01-06, the communication identifies the PHEV-ECU as the relevant module.