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Re: P2127 code on 2007 Saturn Ion 2.2
Posted to Technical Discussion Forum on 8/20/2020 113 Replies

Eric, thanks for reply and diagram. APP1 signal return measured right at wire coming out of PCM with engine running is 11 milli volts. APP2 signal return measured the same way 11 milli volts. Measurement from signal return wire to chassis.

APP1 closed thrott... Login to read more.

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