engine system warning light

tony617 · Post by **tony617** » 09 Nov 2010, 09:41

hi I have a v40 T4 2003
My engine system warning light comes on when the conditions are damp and cold.
I have had it check but only when light is off nothing found
any ideas the car runs vgood with light on no change

Post by **JDS60R** » 09 Nov 2010, 10:18

If the light came on there should be a pending code at least. make sure the gas/petrol cap is on tight and the oring that seals it is clean and in good condition.

Most likely you will have to wait for the code. I woudl look in the pending code history of your computer with a scanner. A code should be in there.

tony617 · Post by **tony617** » 09 Nov 2010, 10:36

hi how do i look at the codes thank in advance

Post by **JDS60R** » 09 Nov 2010, 10:50

Use an OBD ( On board Diagnostics) scanner. An actron CP9185 or any OBD scanner should show you pending and actual codes.
The actron is a generic scanner . To see all the Volvo codes you must get a RICA PPC or go to Volvo service department

tony617 · Post by **tony617** » 09 Nov 2010, 11:06

thanks