my lc1 wideband keeps throwing a code po1153 after about 40-50 miles of driving. I do notice that the gauge also fluctiates while steady cruising from 14.7 to around 14.1 even under light loads. when the mil light comes on then the lc1 gauge reads a pretty steady 14.6 at cruising. Don't know what's goin on with this? I have adjusted the speeds on the lc-1 as well, with no luck. any suggestions??? here is a copy of my log before the mil light.