Nissan U1009-96
ion battery only. ACTION Refer to step 20 under SERVICE PROCEDURE to confirm this bulletin applies to the vehicle being worked on. If this bulletin applies, reprogr am the lithiu
Common search variants: U100996 · U1009 96 · U1009_96 · Search ignores case and common separators.
Quick answer
For certain US-market 2018–2019 Nissan LEAF (ZE1) vehicles with a 40 kWh lithium-ion battery, DTC U1009-96 may be stored when quick charging will not start after many back-to-back quick charges or takes too long. Nissan bulletin NTB19-056/NTB19-056a directs technicians to verify bulletin applicability and, if applicable, reprogram the lithium battery controllers (LBC) for the high-voltage battery.
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 U1009-96 mean?
For certain US-market 2018–2019 Nissan LEAF (ZE1) vehicles with a 40 kWh lithium-ion battery, DTC U1009-96 may be stored when quick charging will not start after many back-to-back quick charges or takes too long. Nissan bulletin NTB19-056/NTB19-056a directs technicians to verify bulletin applicability and, if applicable, reprogram the lithium battery controllers (LBC) for the high-voltage battery.
2. Technical explanation
The verified Nissan/NHTSA bulletin identifies U1009-96 as “Quick charger communication.” It applies only to vehicles equipped with a 40 kWh lithium-ion battery and requires confirmation through step 20 of the bulletin service procedure before the bulletin remedy is used. The supplied evidence does not establish that every U1009-96 event has this cause or that the bulletin applies to every 2018–2019 LEAF.
3. What system is affected?
Quick-charge communication and the lithium battery controllers (LBC) for the high-voltage battery.
4. How serious is this code?
Not yet established by verified evidence.
5. Symptoms you may notice
- The vehicle will not charge using a quick-charge setting after many back-to-back quick charges.
- Quick charging takes too long.
- DTC U1009-96 may be stored.
6. Possible causes
- For the specific Nissan bulletin condition, the documented remedy is LBC reprogramming after bulletin applicability is confirmed.
- Other causes of U1009-96 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?
The verified bulletin describes a condition in which quick charging may not start or may take too long after many back-to-back quick charges. Whether other charging methods remain available is not yet established by verified evidence.
9. What you can safely do
- Arrange diagnosis by a Nissan dealer or qualified EV service facility.
- Provide the stored DTC and describe whether the issue occurred after many back-to-back quick charges.
- Do not attempt high-voltage battery-controller programming yourself.
10. Step-by-step troubleshooting
- Confirm the vehicle is a US-market 2018–2019 Nissan LEAF (ZE1).
- Confirm it is equipped with a 40 kWh lithium-ion battery.
- Have a qualified technician follow step 20 of Nissan bulletin NTB19-056 or NTB19-056a to confirm bulletin applicability.
- If the bulletin applies, Nissan directs reprogramming of the lithium battery controllers (LBC) for the high-voltage battery.
11. When to contact service
Contact a Nissan dealer or qualified EV service facility, particularly if quick charging will not initiate or takes too long and U1009-96 is stored.
12. What the service center may check
- Verify the customer condition: inability to quick charge after many back-to-back quick charges, or excessive quick-charge time.
- Check whether DTC U1009-96 is stored.
- Confirm the vehicle has a 40 kWh lithium-ion battery.
- Use step 20 of the Nissan service procedure to determine whether NTB19-056/NTB19-056a applies.
13. Possible repair or resolution
- When bulletin applicability is confirmed, reprogram the lithium battery controllers (LBC) for the high-voltage battery as directed by Nissan bulletin NTB19-056/NTB19-056a.
14. Affected vehicles
- Nissan Leaf · 2018–2019 · US
15. Related TSBs / service bulletins
- Nissan NTB19-056, “Lithium-Ion Battery Will Not Quick Charge,” published July 18, 2019; NHTSA manufacturer communication 10163708.
- Nissan NTB19-056a, published February 4, 2020; NHTSA manufacturer communication 10172241.
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Official NHTSA-hosted Nissan bulletin: https://static.nhtsa.gov/odi/tsbs/2020/MC-10172241-0001.pdf
19. Frequently asked questions
What does U1009-96 mean in the supplied Nissan evidence?
The Nissan bulletin labels U1009-96 as “Quick charger communication.”
Which vehicles are identified by the bulletin?
The supplied applicability evidence identifies US-market 2018–2019 Nissan LEAF (ZE1) vehicles. The bulletin further limits the condition to vehicles equipped with a 40 kWh lithium-ion battery.
Does U1009-96 always mean the LBC needs programming?
No. The bulletin requires technicians to confirm applicability using step 20 of its service procedure before performing the LBC reprogramming.
What condition does the bulletin address?
It addresses a customer report that quick charging will not start after many back-to-back quick charges, or that quick charging takes too long.