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Home >> GMC >> 2018 >> Terrain Denali, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 17 (Engine Controls And Fuel - 1.6L (LH7) Diesel - Diagnostic Information And Procedures (P205B - P2BAA) And Symptoms) >> Diagnostic Information And Procedures >> DTC P20B9-P20BF Or P20C0-P20C5: Reductant Heater 1-2 >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different variant/trim than selected.

P20B9 

The ECM indicates the reductant tank heater control circuit is open for greater than 5 s.

P20BA 

The ECM indicates the reductant tank heater resistance is greater or less than a calibrated value for greater than 6 s.

P20BB 

The ECM indicates the reductant tank heater control circuit is shorted to ground or overloaded for greater than 5 s.

P20BC 

The ECM indicates the reductant tank heater control circuit is shorted to a voltage for greater than 5 s.

P20BD 

The ECM indicates the reductant line heater control circuit is open for greater than 5 s.

P20BE 

The ECM indicates the reductant line heater resistance is greater or less than a calibrated value for greater than 6 s.

P20BF 

The ECM indicates the reductant line heater control circuit is shorted to ground or overloaded for greater than 5 s.

P20C0 

The ECM indicates the reductant line heater control circuit is shorted to a voltage for greater than 5 s.

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