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Home >> Cadillac >> 2021 >> CT5 Sport, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Engine Controls And Fuel - 3.0L (LGY) - Diagnostic Information And Procedures (2 Of 2)) >> Diagnostic Information and Procedures >> DTC P103B or P103C >> Diagnostic Aids

Diagnostic Aids

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

A control module may monitor the B+ and/or Ignition circuits to verify the voltage is within the normal operating range. A DTC can also set if the charging system or battery voltage is out of range.

High resistance in the circuits of the component may set DTC P103B, P103C without setting the DTC for the component: B52 Heated Oxygen Sensor

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