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Home >> Chevrolet >> 2016 >> City Express LS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 2.0L >> Diagnostic Information And Procedures >> DTC P0643 >> Circuit/System Description
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Circuit/System Description

The K 20 Engine Control Module supplies a voltage of 5.0 V to some of the sensors divided into 2 groups. Accordingly, when a short circuit develops in a sensor power source, a malfunction may occur simultaneously in the sensors belonging to the same group as the short circuited sensor.