Circuit/System Verification
WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition - On/Vehicle - In Service Mode
- Verify DTC P0106, P012B, P10BC, P2227, P2228, P2229, P2230 is not set.
- If any of the DTCs are set
- Go to next step: If none of the DTCs are set
- Verify the scan tool parameter: Throttle Body Idle Air Flow Compensation = Less than 90%
- If 90% or greater
Refer to: Throttle Body Cleaning
- Go to next step: If less than 90%
- If 90% or greater
- Verify the following conditions do not exist:
- Q38 Throttle Body - Loose Clamps/Visible Damage
- Air Cleaner Element - Dirty/Restricted
- Catalytic Converter - Blocked/Restricted/Visible Damage
- Intake Air Duct & Intake Manifold - Cracked/Loose Clamps/Visible Damage - Refer to: Throttle Body Cleaning
- B75 Mass Airflow Sensor - Cracked/Loose Clamps/Visible Damage/Water intrusion
- O-Ring @ B65 Manifold Absolute Pressure and Intake Air Temperature Sensor/Leaking/Missing/Visible Damage
- O-Ring @ B105 Supercharger Air Inlet Pressure Sensor/Leaking/Missing/Visible Damage
- Positive Crankcase Ventilation System - Leaking/Incorrect connection/Restricted/ Frozen
- Vacuum Hoses - Kinked/Leaking/Incorrect connection/Restricted
- Vacuum leak@Engine/Intake Manifold/Q38 Throttle Body
- If a condition exists
Repair or replace as necessary
- Go to next step: If no condition exists
- Verify the scan tool parameter:
- Barometric Pressure Sensor = The value should be within the range listed in the table: Altitude Versus Barometric Pressure
- Barometric Pressure Sensor 2 = The value should be within the range listed in the table: Altitude Versus Barometric Pressure
- Manifold Absolute Pressure Sensor = The value should be within the range listed in the table: Altitude Versus Barometric Pressure
- Supercharger Air Inlet Pressure Sensor = The value should be within the range listed in the table: Altitude Versus Barometric Pressure
- If not in the specified range
- {Barometric Pressure Sensor} Refer to: DTC P10BC, P2228-P2230, or P227C-P227E .
- {Barometric Pressure Sensor 2} Refer to: DTC P10BC, P2228-P2230, or P227C-P227E .
- {Manifold Absolute Pressure Sensor} Refer to: DTC P0107 or P0108 .
- {Supercharger Air Inlet Pressure Sensor} Refer to: DTC P012C or P012D .
- Go to next step: If in the specified range
- All OK.