Diagnostic Aids

WARNING: This page is about a different variant/trim than selected.

{Cadillac}If F5UD Fuse is open, DTC P066A, P066C, P066E, P067A, P067C, P067E will set.
{Chevrolet/GMC}If F5BA Fuse is open, DTC P066A, P066C, P066E, P067A, P067C, P067E will set.
Open or high resistance in the body to engine ground may cause DTC P066B, P066D, P066F, P067B, P067D, P067F to set.