Lamba light

Hi all, just purchased a Volvo 850 R Estate......Does anybody know if this car has a self diagnostic kit under the bonnet...like my old 850 T5 had..........Reason for asking is the Lamba sensor is on all the time.

Thanks Gentlemen !! Will take a look and see if i can sort out the problem..... Thanks again.

95 Ron vs 98 Ron 

Talking of lambda lights I haven't had a single one since I switched back to Regular UL from Super. Jod has probly said so but check all your vac hoses are in good condition.