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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 165 (Engine Controls And Fuel - 2.7L (L3B) - Diagnostic Information And Procedures (1 Of 3)) >> Diagnostic Information and Procedures >> DTC P0030-P0032, P0036-P0038, P0054, P0135, P0141, P103B, or P103C >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.

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

DTC Location Scan Tool Control Function Scan Tool Parameter
P0030, P0031, P0032, P0135 Bank 1 Sensor 1 Heated Oxygen Sensor Heater
  • Heated Oxygen Sensor Heater
  • Heated Oxygen Sensor Heater Control Circuit High Test Status
  • Heated Oxygen Sensor Heater Control Circuit Low Test Status
  • Heated Oxygen Sensor Heater Control Circuit Open Test Status
P0036, P0037, P0038, P0054, P0141 Bank 1 Sensor 2 Heated Oxygen Sensor 2 Heater
  • Heated Oxygen Sensor 2 Heater
  • Heated Oxygen Sensor 2 Heater Control Circuit High Test Status
  • Heated Oxygen Sensor 2 Heater Control Circuit Low Test Status
  • Heated Oxygen Sensor 2 Heater Control Circuit Open Test Status
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