p1678 diagnose also set with a p0137

Question

vehicle randomly dies with a green key light aprox 15 min later engine will restart and run no ck eng light on but codes p0137 and p1678 are present when scanned sometimes goes for hours or days before doing it again usually happens while driving on freeway for extended time

Answer 1

P1687 FP TDR signal line failure

P0137 02 sensor circuit low voltage (Bank 1 Sensor 2)

Stall out with the out, These code P1687 is a result of stalling out, and so can P0137. Until the stalling out condition is resolved, these code may just be the result of stalling out