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Home >> Chevrolet >> 2022 >> Tahoe SSV >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Engine Controls And Fuel - 3.0L (Lm2) Diesel - Diagnostic Information And Procedures (4 Of 5)) >> Diagnostic Information and Procedures >> DTC P143C, P20C1-P20C4, P221E, or P221F >> DTC Descriptor

DTC Descriptor

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DTC P143C

Reductant Heater 3 Control Circuit Shorted

DTC P20C1

Reductant Heater 3 Control Circuit

DTC P20C2

Reductant Heater 3 Performance

DTC P20C3

Reductant Heater 3 Control Circuit Low

DTC P20C4

Reductant Heater 3 Control Circuit High

DTC P221E

Reductant Heater 3 Current Too Low

DTC P221F

Reductant Heater 3 Current Too High

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