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Re: P2127 code on 2007 Saturn Ion 2.2
Posted to Technical Discussion Forum on 8/20/2020 109 Replies

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Louie, I think you are confused. There are three wires.

The Signal Return wire is APP Sensor 1 and 2 reading that the sensor is changing from 5 volts. The APP sensors take the 5 vo... Login to read more.

109 Replies Received (View Replies)