HI, yesterday when I went to turn my v2004 v70 2.5t back on my car went into safe mode (drives only in low gear, no spedometer, no signals etc) and came back with these 4 fault codes
U0073 Control module communication bus off
P0571 brake switch a circuit
P0503 vehicle speed sensor a intermittent ...

I should've mentioned how all warning lights now are also gone and only an engine light shows..

Im guessing a wiring fault in the ABS motor is turning it on, then blowing the fuse, which takes out a lot of electronics.

You need a wiring diagram and electrical acumen to go further than this in the diagnostic process


Thanks. I took it in to the local mechanic and he said the codes show ...

You need to pull up the schematics and figure out if a relay and/or shunt is shared tying the airbags and ABS together - start by looking at the CEM schematics. It is possible they share a common power line and blowing the fuse depowered the SRS (like unplugging it without disconnecting the ...

Did the brakes lock up on their own or had you applied them?
"Bad" ABS units will impact other systems. I'd assume (do not know) it blowing a fuse would impact something.
Has the new fuse been working? Was the blown one the right amperage?
If the condition which caused the ABS fuse to burn out ...

Looking for some help.i know almost nothing about cars so please bare with me...
Was driving my 2004 v70 turbo when I noticed the brakes lock up then all of a sudden I got a ABS failure message and then a SRS service urgent message. Then the odometer screen went blank. Pulled over and pulled the abs ...