Hello I have a 05 trailblazer ext with the auto climate control and I have the b0159 code for the ambient air temp sensor I've replaced the sensor and still have the code and 50F on the display I did some digging and found out that I have 5v on the green wire but barely have a ground on the brown wire I used a test light and it barely lights up but I have checked ground on every other temp sensor and everything has a ground and the HVAC module has a perfect ground on the brown wire as well, my question is can I just run a new ground wire to the ambient temp sensor or what do I need to do to fix it?
Also something to mention is i disconnected the C105 connector by the fuse box and and on the male side of the connector I barely have a ground on the brown wire as well I also have a program cluster message when I open the door or start the vehicle
Also something to mention is i disconnected the C105 connector by the fuse box and and on the male side of the connector I barely have a ground on the brown wire as well I also have a program cluster message when I open the door or start the vehicle