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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 54 (Engine Controls And Fuel - 2.8L (LWN) Diesel - Diagnostic Information And Procedures (2 Of 3)) >> Diagnostic Information and Procedures >> DTC P1051, P20B9, P20BA-P20BC, P248A, or P248B >> Conditions for Setting the DTC

Conditions for Setting the DTC

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P1051, P20BA 

Reductant Heater 1 = Not within a calibrated range - For greater than 8 s

P20B9 

Control Circuit = Open - For greater than 5 s

P20BB 

Control Circuit = Short to Ground - For greater than 4 s

P20BC 

Control Circuit = Short to Voltage - For greater than 4 s

P248A, P248B 

Battery Voltage & Reductant Heater 1 = Not within 3 V of each other

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