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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 92 (Engine Controls And Fuel - 2.8L (LWN) Diesel - Diagnostic Information And Procedures (1 Of 3)) >> Diagnostic Information and Procedures >> DTC P0191-P0194, P127C, or P127D >> Diagnostic Fault Information

Diagnostic Fault Information

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
5 V Reference P0193, P06A3, P127D P0193, P127D P0193, P06A3, P127D -
Fuel Rail Pressure Sensor 1 - Signal P0192 P0193 P0193 P0191, P0194
Fuel Rail Pressure Sensor 2 - Signal P127C P127D P127D P0191
Low Reference - P0193, P127D P0193, P127D P0191, P0194
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