Page 1 of 1
Posted: Wed Feb 12, 2020 12:24 pm
Hey everyone, anybody know what's up with a U1073 code," bus off" ? I have intermittent exclamation but car seems to drive OK. Thanks
Posted: Wed Feb 12, 2020 6:38 pm
That is a DTC to indicate a CAN Buss error, in that the EVCU thought the CAN buss was OFF.
What is the condition of your 12V aux battery? An old, weak, or worn out aux battery can cause a multitude of errors including spurious faults of the CAN Buss.
Posted: Thu Feb 13, 2020 1:32 pm
Hey Kiev, yeah that car was just in the dealer to replace the vacuum pump. They indicated the battery (aux) was ok but, i know it is old. I'll try changing out,see if improves. Thanks for the reply!