Q: Why does my oxygen sensor heater stay in not ready mode on my 2002 Cadillac Escalade
这是在加利福尼亚的烟雾时间，我的汽车在ECU中没有任何错误代码，但是无论我做了多少gm驱动周期和冷启动怠速，氧气传感器加热器都不会从没有准备就绪的准备就绪。我有一个扫描仪，这是蒸发以外的唯一传感器，这是不完整的。关于该O2加热器的任何想法。
My car has 281404 miles.
My car has an automatic transmission.
Hello. If you have performed the necessary driver cycles and have not lost battery voltage or reset the computer at any time then you either have a problem with the heater circuit of the sensor or the computer is failing. I usually test the heater circuit first as it will not set a code if it is working, but just not reaching the right temperature. Keep in mind that this does take quite a few drive cycles to complete. If the circuit is fine then the computer should be reflashed and then replaced if it does not take care of it.
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