Nissan U1010
Module was not connected Module has internal issue Module is not installed Wrong Part Number Module is not programmed Wrong configuration Go to A on page 4 Go to B on p
Quick answer
For applicable US Nissan LEAF model years, U1010 is a CAN-related diagnostic code. Nissan’s bulletin directs replacement of the module that sets U1010 after checking whether it is connected, installed, correctly part-numbered, programmed, and configured.
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1. What does U1010 mean?
For applicable US Nissan LEAF model years, U1010 is a CAN-related diagnostic code. Nissan’s bulletin directs replacement of the module that sets U1010 after checking whether it is connected, installed, correctly part-numbered, programmed, and configured.
2. Technical explanation
Nissan bulletin NTB13-027C identifies U1010 within CAN-system diagnosis. When U1010 is current in CONSULT, the bulletin directs technicians to replace the module that sets U1010 and check these items: the module connection, internal module condition, installation, part number, programming, and configuration. The bulletin also states that if no current CAN DTCs are shown in CONSULT, that TSB does not apply; intermittent issues should be diagnosed using the Electronic Service Manual.
3. What system is affected?
CAN communication system and the specific module that sets U1010. The supplied evidence does not identify one universal module for this code.
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 module was not connected.
- The module has an internal issue.
- The module is not installed.
- Wrong part number.
- The module is not programmed.
- Wrong configuration.
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 evaluated with Nissan CONSULT or equivalent manufacturer-level diagnostic equipment.
- Record all systems’ self-diagnosis and CAN-diagnosis results before clearing codes when diagnosis involves ABS/VDC communication faults.
- Do not replace or program CAN modules based on this code alone without confirming which module sets U1010 and following the applicable Nissan diagnostic procedure.
10. Step-by-step troubleshooting
- Confirm whether U1010 is a current DTC in CONSULT. Nissan states NTB13-027C does not apply if no current CAN DTCs are shown.
- Identify the module that sets U1010.
- Check whether that module is connected and installed.
- Verify the module has the correct part number, programming, and configuration.
- Assess the identified module for an internal issue.
- For intermittent issues, use the Nissan Electronic Service Manual diagnostic procedure.
- Where applicable, perform CAN-system diagnosis and repair or replace components as indicated by the diagnostic results.
11. When to contact service
Service evaluation is appropriate because Nissan’s documented diagnostic path can require module replacement, programming, configuration verification, and CAN-system diagnosis.
12. What the service center may check
- Identify all systems reporting DTCs and CAN diagnostic results.
- Determine whether U1010 is current.
- Identify the module that set U1010.
- Check module connection and installation.
- Verify module part number, programming, and configuration.
- Evaluate for an internal module issue.
- Perform CAN-system diagnosis when indicated.
- Perform the applicable DTC confirmation test after repair, where required by the Nissan procedure.
13. Possible repair or resolution
- Nissan NTB13-027C directs replacement of the module that sets U1010 after the listed connection, installation, part-number, programming, and configuration checks.
- If CAN-system diagnosis identifies another repair need, repair or replace as indicated by the diagnostic results.
14. Affected vehicles
- Nissan Leaf · 2011–2025 · US
- Nissan Leaf · 2011–2023 · US
- Nissan Leaf · 2011–2022 · US
15. Related TSBs / service bulletins
- NTB13-027C, NHTSA manufacturer communication 10208946, published February 22, 2022: CAN-system diagnostic procedure covering U1010 and other CAN-related DTCs. https://static.nhtsa.gov/odi/tsbs/2022/MC-10208946-0001.pdf
- NTB13-027D, NHTSA manufacturer communication 11004961, published May 21, 2024: references U1010 CAN-related diagnosis and module checks. https://static.nhtsa.gov/odi/tsbs/2024/MC-11004961-0001.pdf
- NTB10-145B, NHTSA manufacturer communication 10233896, published March 8, 2023: includes diagnostic direction for CAN and ABS/VDC-related DTC evaluation, including checking for U1010 or ECU-failure-related DTCs. https://static.nhtsa.gov/odi/tsbs/2023/MC-10233896-0001.pdf
16. Recall information
No recall relationship is established by verified evidence.
17. Official manufacturer information
Verified official evidence consists of Nissan manufacturer communications published through NHTSA. Applicability supplied for this record is US Nissan LEAF model years 2011–2025; the overlapping applicability entries support the overall 2011–2025 range.
19. Frequently asked questions
What does Nissan U1010 indicate?
The verified Nissan bulletin describes U1010 as a CAN-related diagnostic result and directs diagnosis toward the module that sets the code.
What does Nissan say to check for U1010?
Check whether the affected module is connected and installed, whether it has an internal issue, whether the part number is correct, and whether it is programmed and configured correctly.
Does U1010 identify a specific module?
No. The supplied evidence says to replace the module that sets U1010, but it does not name one universal module.
Does the bulletin apply to an intermittent historical code with no current CAN DTC?
Nissan NTB13-027C says the TSB does not apply if no current CAN DTCs are shown in CONSULT, and it refers intermittent issues to the Electronic Service Manual.