Hello members
I have another car S2k question but the gauge wire hook up same
I'm using AEM EMS V2 with AEM wideband failsafe gauge
the gauge keep randomly sensor offline issue (keep on and off randomly)
I Hooked wire :

black (battery ground - chassis ground)
blue (failsafe lowsise ground - audio source black wire ground)
yellow (boost analog output - AEM EMS D17 MAP sensor pin)
white (AFR analog output - AEM EMS V2 D16 pin)
brown (Ground analog output - AEM EMS V2 D9 pin)
red (switched 12V power - audio source 12V )
grey (dash/instrument light - audio source dim)
green (RPM - hook rpm wire)

I tried all wire removed except O2 connector and 12V audio power 2 ground black and blue

AEM told me sensor offline is wire problem and I never cut the wire and I removed all the wire except power and ground but still happening sensor offline

do I wrong hook up blue wire? failsafe low side ground I hook up audio source black wire

anyone have experienced?