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Home >> Chevrolet >> 2021 >> Malibu LT >> Repair and Diagnosis >> Engine Mechanical >> Starter >> 12 V Starting And Charging - Diagnostic Information And Procedures (1 Of 2) >> Diagnostic Information and Procedures >> DTC P3052, P3054, or P3056 >> Conditions for Setting the DTC

Conditions for Setting the DTC

DTC P3052 

Control module K20 ECM detects: DC/DC Converter Output Voltage Sensor Circuit 2 Low Voltage - Less than 1 V

DTC P3054 

Control module K20 ECM detects: DC/DC Converter Output Voltage Sensor Circuit 2 High Voltage - Greater than 28 V

DTC P3056 

Control module K20 ECM detects: A difference of greater than 1 V between the ECM IGN voltage and the DC/DC converter output voltage when the engine is running or A difference of greater than 2 V between the ECM IGN voltage and the DC/DC converter output voltage when compared to the pre cranking voltage snapshot during the restart during an Autostart/Autostop Event.

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