Circuit/System Verification

Ignition ON, compare the scan tool Air Pressure Sensor pressure parameter to the BARO reading. The readings should be within 3 kPa (0.4 psi).
- If greater than the specified range, refer to DTC P2430-P2433 .
Command the Secondary Air Solenoid Relay ON and OFF with a scan tool. You should hear an audible click as the relay is commanded ON and OFF.
- If the relay does not respond to the scan tool commands, refer to DTC P0412 or P0418 .
Command the Air Solenoid ON and OFF with a scan tool. Listen or feel for Air Solenoid operation. The Air Solenoid should respond to the scan tool commands. Repeat as necessary in order to verify Air Solenoid operation.
Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.