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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Engine Controls And Fuel - 2.8L (LWN) Diesel - Diagnostic Information And Procedures (3 Of 3)) >> Diagnostic Information and Procedures >> DTC P203B-P203D >> Conditions for Setting the DTC

Conditions for Setting the DTC

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P203B 

Reductant Level Sensor = Not within a calibrated range

P203C 

Serial Data circuit = Greater than a predefined threshold - For greater than 5 s

P203D 

Serial Data circuit = Less than a predefined threshold - For greater than 5 s

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