Hello. On my volvo xc70 2.4 Diesel '07 there's problem, which I can't find solution to. Sometimes, while driving speed higher than 20 km/h ( 12-13 mph) and higher rpms, i hear a hit in the gearbox, then i receive anti-skid needs service message, and it automatically shifts in to 3rd gear and won't go up or down. Shutting car off and on doesn't help, and clearing stored fault codes helps for some time, but it always comes back at higher rpms. The fault codes i always find is these two:
0A31 - control module signal missing.
23B0 - second injection valve signal missing.
I Switched second injection valve with the third, it still shows that second injection valve is faulty, even though it's switched. Right now I am lost, don't even know what to do. Thought about purchasing new engine wires, how do you think, would it help? Thanks for any sort of opinion or even solutions.

 

I found problems solution, it was engine wiring, so if you have the same problem, you should check your wiring

 

hello Tomas!


What was the exact wiring issue? Where, if you can be more specific?

Thanks!

 

I don't even know, i couldn't see any damage on the wiring. So as i said it was just like 50/59 chance of working.

 

Oh, you did'nt fix it yourself, you fixed it in a garage, I presume.
I was actually curious if the cables seems to be the problem, or the pins in the connector...

Thank you for your time !