Hello there. Having a problem with my 2004 v70r. Check engine light came on a while back. No apparent symptoms until now. PO600 code shows serial communication link issue. Car sometimes will not start. Reset alarm then will start. Sometimes starts then immediately shuts down. When this happens display will show engine system service required, transmission service required, low coolant and ABS system serivce required. Car is great and has 207K Doing fine for the last few days, but check engine light still on. Getting ready for a 2K trip and have concerns. Any help?? Thanks Martin

 

V70r 2004 showing check engine light on Code PO600 Anyone ever have this? Thanks