bienvenido::
Error 168 is the code for low system voltage. This could be a weak battery, an alternator going bad, or simply battery not making good contact. I would start with ensuring the battery connections are tight.
code 168 reads: System Power (battery potential/power input) Condition: Voltage Too High
Now the reason it might be high is because the battery is going bad and the voltage regulator is trying to catch up.
Text copied from users of this community.
saludos