Air Injection: Testing and Inspection
System OverviewA problem with the AIR system may set one of the following DTCs:
^ DTC P0410
^ DTC P1415
^ DTC P1416
Air flowing to the exhaust ports at the wrong time can cause a false lean HO2S indication and cause the VCM to add extra fuel. This will result in increased catalytic converter temperature, because more fuel and air will be oxidizing in the converter.
The AIR system is not completely noiseless. Under normal conditions noises rises in pitch as engine speed increases.
If noise is caused by the AIR system, check for the following:
^ A seized AIR pump.
^ Proper mounting and bolt torque of the pump.
^ Proper routing and connections of the hoses.
Refer to Secondary Air Injection System Check. Under Diagnostic Tables / System Diagnostic Tables. Testing and Inspection