Dear All,
I have a 2010 volvo 2.0 eco diesel xc60. The other day the service engine systems urgent light came on with the codes 129, 040 and 186. I did some research online and found advise that it may be a dirty fuel filter. I do some diy mechanics so i have changed the fuel filter. The car runs much better now but i have the same codes coming up with the service engine systems urgent light still on. Please can someone please advise me what the codes 129, 040 and 186 mean.

Thanks

xc60 volvo

 

Have you find the 129 code what is this ?

 

Don't know what the 129 code is yet