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Po172 refers to an oxygen sensor. But after you service the part you need to clear the code with an OBD II scanner. You can get a reliable inexpensive one at Harbor Freight. After you clear the code then you to start the car and drive it to see if the code comes back on. Also if you have a vacuum leak this can cause the system to run either rich or lean depending on circumstances.
i think that it is a code in the tcm otherwise transmission problem such as speed sen or input out sensors for trans or just to tell you to check transmission codes for this your scanner cant read you might have to go to dealer to read trans codes
No...the fuel sending unit is not a computer driven item nor is it monitored in any way by the onboard computer system. Interface with scanner and retrieve code(s) associated with indicator lamp occurrance
you need scanner to read codes. The old days we had to guess from experience but these days if the light is on or you feel a driveability issue most of the time a code will be in the computer memory. This is the fisrt step. With a code we will be able to help
I believe the PCM was expecting a signal from a sensor (which one I don't know) that should be low voltage and instead was high voltage and therefore triggered a DTC for that sensor...I will guess a bad O2 sensor...
code may also be cleared by disconnecting battery negative wire for 30 seconds...remember to reset your clock and radio settings...
sorry that is all I can find...please rate me solved