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2021
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Voyager LX, Gas
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Repair and Diagnosis
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Engine Performance
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System
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3.6L - DTCS P1057 To P1D73
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Diagnosis And Testing
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P1621-O2 Sensor Reference Voltage Circuit Low
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Set Condition
Set Condition
The Downstream O2 Sensor Return circuit voltage is less than 0.9 - 0.96 volts depending on calibration for approximately 9.0 seconds.