Nissan P318097 -

If the vehicle is turned off, it may refuse to enter "READY" mode again. The high-voltage contactors will stay open to isolate the pack.

Pulled from Altima forums and auto body shop reviews:

Users with LeafSpy Pro may see this code along with others related to cell voltage differences (e.g., Vmincap V sub m i n end-sub Vmaxcap V sub m a x end-sub variance). Common Causes for P3180-97

: Low coolant levels in the inverter reservoir can cause overheating, leading to power reduction and system errors. Recommended Steps

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Here is a detailed review of the product, including its purpose, installation, and performance impact.

If your vehicle is running normally, ignore it. If you have drivability symptoms, use a professional diagnostic tool to retrieve standard P0XXX, P1XXX, P2XXX, or U0XXX codes. Do not attempt to replace any hardware based on P318097 alone.

Analyze the cell voltages using LeafSpy, especially while charging or when the state of charge (SoC) is low. If one cell drops significantly lower than others, that cell or module is likely damaged.

It signifies a fault in the inverter system or a high-voltage insulation leak to the chassis. If the vehicle is turned off, it may

: Once you park and turn the vehicle off, the VCM activates a safety lockout, preventing the car from entering the "READY" to drive state again.

The vehicle will not start (Ready light does not come on), and you may see a "Hybrid System Error" on the dashboard.

Diagnosing and repairing the P318097 code requires a systematic approach. Here are some steps you can take:

Since this is not a standard fault code, do not attempt to diagnose a specific sensor or component based on this number alone. Instead: Common Causes for P3180-97 : Low coolant levels

In conventional cars, a dead battery can be jumped or swapped. With Nissan e-POWER systems, code P3180-97 writes a permanent lockout state into the EEPROM (internal memory) of the high-voltage battery computer.

: If data reprogramming is unavailable in your region, the physical high-voltage battery computer must be replaced with a functioning unit. Summary of Associated Error Codes

High-voltage leakage to the chassis ground, sometimes caused by moisture or faulty insulation in HV components.