Possible Causes

WARNING: This page is about a different car, the 2005 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.

DLC C251
diagnostic tool
in-line C213
in-line C313
in-line C315
joint connector No. 1 C261
4-ED6 (OG)
driver climate control seat module
passenger climate control seat module
parking aid module