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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 >> Conditions for Setting the DTC

Conditions for Setting the DTC

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.

P0191 

Fuel Rail Pressure Sensor 1 = Not within a calibrated range - For greater than 1 s

P0192 

Fuel Rail Pressure Sensor 1 = Less than 0. 25 V - For greater than 1 s

P0193 

Fuel Rail Pressure Sensor 1 = Greater than 4. 75 V - For greater than 1 s

P0194 

Fuel Rail Pressure Sensor = Not Plausible - For greater than 1 s

P127C 

Fuel Rail Pressure Sensor 2 = Less than 0. 25 V - For greater than 1 s

P127D 

Fuel Rail Pressure Sensor 2 = Greater than 4. 75 V - For greater than 1 s

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