...code p0404 404, its under warantty the 8 year smog. this is EGR failure. and is NOX smog rules. and is in warranty. all cars . for 8 years.80k or 15/150k, depend on car. but whichever first occurs so ...
...code po138 bad o2 sensor Hi there:Likelly needs a down strem o2 sensor...Circuit Description The PCM has the ability to monitor this process by using a rear Heated Oxygen Sensor (HO2S 2). The ...
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