问:检查引擎灯还开着呢

码p0725和p0335计算机。检查引擎灯。好的,所以我检查引擎灯了。我带它去看看代码,它是银行的一个氧传感器。之后一段时间我的车不会开始一天。我的朋友我们如果技师来帮助。我买了一个从AutoZone凸轮轴和曲轴传感器。他把它们放在但没有尝试一次,因为下雨了。汽车开始。但发动机仍在。 Then a couple of weeks later I go to AutoZone to get an o2 sensor and they checked the code again but it wasn't coming up o2 sensor anymore. Now it was saying p0725 crankshaft sensor and p0335 engine speed sensor. So I brought it to my friend he put it on the computer and erased the codes thinking it might be just a history code. Didn't work. Then he put a Nissan crankshaft sensor in instead of the aftermarket one. That also didn't work. Check engine light is still on. Where should I go from here?

我的车有166418英里。
我的车有一个自动变速器。