Bank 2 sensor 1, O2 sensor heater circuit malfunction. If the wiring and the electrical connection to the B2 S1 sensor looks okay, replace the O2 sensor. The B2 S1 O2 sensor is on the passenger side exhaust pipe directly after the exhaust manifold.
What you has is a gas vapor leak in the system, first try tightening or replace the gas cap.
they cant say it
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Can anyone tell me what press codes are
This is a used code (don't tell anyone!)THIS is the horse code it is 72hxf254jm46
no but if you know one please tell me
the code comes with the book; noway am i or anyone else gonna tell you our codes by the way
i dont want to tell anyone the code cause it's secret
Trouble code P0721 means:Output speed sensor circuit range/performance
They generally set a trouble code and the check engine light illuminates.
The DTC (Diagnostic Trouble Code) will lead you the faulty O2 senser.
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