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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 123 (Engine Controls And Fuel - 3.6L (LF4) - Diagnostic Information And Procedures (3 Of 3)) >> Diagnostic Information and Procedures >> DTC P2096-P2099 >> Circuit/System Verification

Circuit/System Verification

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.
  1. Ignition - On / Vehicle - In Service Mode
  2. Verify there are no DTCs set related to the following component/system:
    • B23 Camshaft Position Sensor
    • B34 Engine Coolant Temperature Sensor
    • B52 Heated Oxygen Sensor
    • B74 Manifold Absolute Pressure Sensor
    • B75 Mass Airflow Sensor
    • B111B Turbocharger/Supercharger Boost Pressure and Intake Air Temperature Sensor
    • B150 Fuel Tank Pressure Sensor
    • Q12 Evaporative Emission Canister Purge Solenoid Valve
    • Q17 Fuel Injector
    • Q38 Throttle Body
    • Engine Misfire
    • Evaporative Emission (EVAP) System
    • Fuel Trim System
    • Go to next step: If a related DTC is not set 
  3. Verify the following conditions do not exist:
    • Air Cleaner Element - Dirty/Missing/Restricted/Visible Damage/Water intrusion
    • Engine - Vacuum leak
    • Evaporative Emission (EVAP) Purge System - Leaking/Stuck Open
    • Evaporative Emission (EVAP) System - Leaking/Saturated with fuel/Visible Damage
    • Exhaust System - Leaking/Restricted - Refer to: Symptoms - Engine Exhaust
    • Fuel - Contaminated/Fill Level = Low/Poor Quality - Refer to: Alcohol/Contaminants-in-Fuel Diagnosis 
    • Fuel Injectors - Leaking/Restricted - Refer to: Fuel Injector Diagnosis 
    • Fuel Pressure - High/Low - Refer to: Fuel System Diagnosis 
    • Intake Air Duct - Leaking/Loose/Poor Connection/Restricted/Visible Damage
    • Positive Crankcase Ventilation System - Dirty/Leaking/Poor Connection/Restricted
    • Throttle Body - Blocked/Dirty/Restricted
    • Vacuum Hoses - Incorrect connection/Kinked/Leaking/Restricted
    • Vacuum leak @ Engine - Oil Level Indicator and Tube /Oil Filler Cap
    • If a condition exists 

      Repair or replace as necessary

    • Go to next step: If no condition exists 
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

    Verify the DTC does not set.

    • If the DTC sets 

      A condition with the system still exists - Refer to: Step 3

    • Go to next step: If the DTC is not set 
  5. All OK.
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