The code generally points to a malfunction within the HV battery assembly or its monitoring sensors. It is frequently associated with:
: One of the most documented causes for P3180-97 in Nissan Note e-POWER models is a failing air conditioning compressor. Because the compressor is powered by the high-voltage battery, an internal short can leak current, triggering isolation faults like P3180-97 and P0AA6. nissan p318097
: The HV battery was drained to zero (often because the car ran out of fuel or was left for a long period in cold weather). Isolation Faults : A leak of high-voltage current to the vehicle chassis. Cell Failure The code generally points to a malfunction within
A weak 12V battery can cause multiple communication errors (like U1000 ) that trigger system-wide HV faults. : The HV battery was drained to zero
: If a specific part—like the A/C compressor—is found to be leaking current, it must be replaced to restore the system's insulation integrity. Maintenance & Parts nissan note epower repair part 1