P0153=Upstream Heated Oxygen Sensor (HO2S 21) circuit slow response (Bank #2).
P1151=Lack of upstream Heated Oxygen Sensor (HO2S 21) switch, sensor indicates lean (Bank #2).
B2 must be bank #2.
1996 Contour SE Sedan 4D (Royal Blue)
Duratec V6 2.5L 24-valve DOHC
Automatic
75,000 miles
No Mods (unless you call the DMD a mod)
Replaced EGR valve (gunked up), EVR (EGR VR), PCV valve, and evaporative emissions hose (cracked).
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