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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1863 (Engine Controls And Fuel - 2.4L (Lat) - DTC P0420 To DTC P2544) >> DTC P2120, P2122, P2123, P2125, P2127, P2128, or P2138 >> Diagnostic Fault Information

Diagnostic Fault Information

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
DTC P2120, P2122, P2123, P2125, P2127, P2128, or P2138

Circuit Short to Ground High Resistance Open Short to Voltage Signal Performance
APP Sensor 1 Signal P2122 P2138 P2122 P2123 -
APP sensor 1 5-Volt Reference P2122 P2138 P2122 P2123 -
APP sensor 1 Low Reference - P2138 P2123 - -
APP Sensor 2 Signal P2127 P2138 P2128 P2128 -
APP sensor 2 5-Volt Reference P2127 P2138 P2127 P2128 -
APP sensor 2 Low Reference - P2138 P2128 - -
APP Sensor 1

Circuit Short to Ground Open Short to Voltage
Parameter Normal Range:  0.13-4.87 V
APP Sensor 1 Signal 0 V 0 V 5 V
APP Sensor 1 5-Volt Reference 0 V 0 V 5 V
APP Sensor 1 Low Reference - 5 V -
APP Sensor 2

Circuit Short to Ground Open Short to Voltage
Parameter Normal Range:  0.13-4.87 V
APP Sensor 2 Signal 0 V 0 V 5 V
APP Sensor 2 5-Volt Reference 0 V 0 V 5 V
APP Sensor 2 Low Reference - 5 V -
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