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EV system warning light
Nissan LEAF EV system warning light: fault in the EV system
Risk level
High
Professional inspection is recommended.
Urgency
High
Quick answer
On a Nissan LEAF, the electric vehicle system warning light comes on when there is a fault in the traction motor and inverter, charge port or on board charger, Li-ion battery, cooling system or shift control. Contact a NISSAN certified electric vehicle dealer.
Safety first
Stop and check this first
- On an electric Nissan, orange cables, the traction battery and their connectors carry high voltage: do not open, touch or disconnect them; only a workshop trained in high voltage should work on them.
- Nissan says to contact a knowledgeable LEAF repairer such as a NISSAN certified electric vehicle dealer when this light comes on.
Safe checks you can perform
- Lights and messages shown with it
- When it appears: charging or driving
- Recent impact or accident
Leave these tasks to a qualified professional
- Do not attempt this professional task: High-voltage isolation test after the EV system warning light
- Do not attempt this professional task: Stored codes behind the EV system warning light
- Do not attempt this professional task: Battery state-of-health report for the EV system warning light
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
High-voltage isolation test after the EV system warning light
What they doA technician qualified for high voltage, with the car unplugged and following Nissan's safety procedure, measures the isolation of the high-voltage circuit with the manufacturer's equipment and inspects orange cables and connectors.
They must show youthe measured isolation value against Nissan's specification and the condition of the cables and connectors checked.
In writingthe isolation test result, who did it with high-voltage training and whether it explains the EV system warning light.
Stored codes behind the EV system warning light
What they doAt a workshop with EV-trained technicians, they connect a Nissan-capable diagnostic tool and read the stored and pending codes from the traction motor, inverter, on board charger, battery and shift control units, with the time and conditions in which the EV system warning light was logged, before clearing anything.
They must show youthe code list with status, read while the EV system warning light is active or freshly logged.
In writingthe codes read, the system they point to and which test confirms the fault before any part is replaced for the EV system warning light.
Battery state-of-health report for the EV system warning light
What they doThe workshop pulls the high-voltage battery report with Nissan's tool: estimated state of health (SOH), module voltages and the temperatures logged when the EV system warning light appeared.
They must show youthe battery state-of-health report with the date it was read.
In writingthe state of health read, whether any module is outside what Nissan accepts and whether the proposed repair falls under the battery warranty.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Lights and messages shown with it
- Who:
- you, with the car stopped somewhere safe.
- How:
- note whether the master warning, the power limitation indicator or the 12-volt battery charge light is also on, and what message the display shows.
- Result that matters:
- which system the other warnings point to.
- If there is a stop the vehicle message or the 12-volt light:
- stop safely, apply the parking brake and select P, then call the dealer.
- If only this light is on:
- contact a NISSAN certified electric vehicle dealer before carrying on using the car normally.
- Evidence to keep:
- photo of the cluster and display with all warnings.
Evidence: Nissan LEAF 2023 owner's manual: electric vehicle system warning light · Nissan LEAF 2023 owner's manual: 12-volt battery charge warning light
When it appears: charging or driving
- Who:
- you, recalling the moment.
- How:
- note whether the light came on during charging, at start-up or while driving.
- Result that matters:
- the situation in which it appears.
- If it appears when charging:
- it points to the charge port or on board charger; tell the dealer and note the charging equipment used.
- If it appears while driving:
- it points more to motor, inverter, battery or cooling; avoid long trips until it is checked.
- Evidence to keep:
- date, time and situation of each occurrence.
Evidence: Nissan LEAF 2023 owner's manual: electric vehicle system warning light
Recent impact or accident
- Who:
- you.
- How:
- consider whether the car had a knock or accident just before the light came on.
- Result that matters:
- whether the emergency shut off could have activated.
- If there was an impact:
- do not touch anything in the electric system; the manual refers to accident precautions and a certified dealer.
- If there was no impact:
- the cause is in one of the other systems; only the code reading will say which.
- Evidence to keep:
- report or photos of the impact if any.
Evidence: Nissan LEAF 2023 owner's manual: electric vehicle system warning light
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Vehicles
- Brand
- Nissan
- Product type
- Cars
Known code variants
- Aviso del sistema del vehículo eléctrico
- Electric vehicle system warning light
- EV system warning light
- LEAF car with exclamation mark light
- Nissan Leaf avería sistema eléctrico
- Nissan Leaf EV system fault
- Nissan LEAF EV system warning
- Nissan LEAF testigo coche con exclamación
- Testigo del sistema del vehículo eléctrico
- testigo EV LEAF
What it means
The 2023 LEAF manual links this light to five systems: traction motor and inverter, charge port or on board charger, Li-ion battery system, cooling system and shift control system. It also lights if the emergency shut off system has been activated after an accident. The light does not say which of those systems has failed: the workshop's code reading does.
Warnings and stop conditions
- Higheditorial warning
On an electric Nissan, orange cables, the traction battery and their connectors carry high voltage: do not open, touch or disconnect them; only a workshop trained in high voltage should work on them.
Evidence: Nissan LEAF 2023 owner's manual: electric vehicle system warning light
- Highsource verified
Nissan says to contact a knowledgeable LEAF repairer such as a NISSAN certified electric vehicle dealer when this light comes on.
Evidence: Nissan LEAF 2023 owner's manual: electric vehicle system warning light
Symptoms and causes
Probable causes · in order
- Traction motor or inverterPossible
First system on Nissan's list. When hot, the manual also lights the power limitation indicator; only the code reading separates it from the other systems.
Evidence: Nissan LEAF 2023 owner's manual: electric vehicle system warning light
- Charge port or on board chargerPossible
It fits if the light appears while charging or the car stops charging normally, with no change when driving.
Evidence: Nissan LEAF 2023 owner's manual: electric vehicle system warning light
- Li-ion battery or cooling systemPossible
Nissan includes the battery and the cooling system. With high temperature or very low charge the manual also lights the power limitation indicator.
Evidence: Nissan LEAF 2023 owner's manual: electric vehicle system warning light
- Emergency shut off system activatedPossible
After an impact or accident, the light shows the system shut off for safety; the manual refers to road accident precautions.
Evidence: Nissan LEAF 2023 owner's manual: electric vehicle system warning light
Virtual technician
Does EV system warning light still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
Nissan LEAF 2023 owner's manual: electric vehicle system warning light
Nissan UK · 2023 · manual
- 2
Nissan LEAF 2023 manual del propietario: testigo del sistema del vehículo eléctrico
Nissan España · 2023 · manual
- 3
Nissan LEAF 2023 owner's manual: 12-volt battery charge warning light
Nissan UK · 2023 · manual
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