The sensors command from lm_sensors has this output on my linux computer.
How to determine whether the alarm is valid or false?

# sensors
lm85-i2c-1-2e
Adapter: SMBus I801 adapter at 2020
VCore: +1.49 V (min = +1.45 V, max = +1.60 V) ALARM
V3.3: +3.32 V (min = +3.13 V, max = +3.47 V)
V5: +5.18 V (min = +4.74 V, max = +5.26 V)
V12: +11.94 V (min = +11.38 V, max = +12.62 V)
CPU Fan: 3794 RPM (min = 4000 RPM) ALARM
CPU Temp: +37 C (low = +10 C, high = +50 C)
M/B Temp: +36 C (low = +10 C, high = +35 C) ALARM
vid: +1.525 V (VRM Version 9.1)

Do those values correspond to the ones listed by the BIOS ? They may be real alarms as long as it matches what the BIOS says. Sometimes the sensors output is off or not correctly calibrated, but that's usually for CPU temperatures, not for voltages.