P1663 GMC - 1998 Oldsmobile Silhouette GLS: so what's the vehicle fault message for this code?

Question

Is this related to an option feature on this model?

Answer 1

Hi there,

This code indicates an issue with the change oil lamp. Here is some more info for you.

P1663 GMC - Change Oil Lamp Control Circuit Conditions

Read more: https://www.autocodes.com/p1663_gmc.html