Severity: Fix soon. Usually safe to drive for now.
The computer measured the wrong amount of air from the secondary air injection system on a cold start.
Inspect the air hoses and check valve for blockage or leaks, then test the pump.
Safe to drive. Cold-start emissions are higher, but the car runs normally.
Generally safe to drive, but get it checked soon. Safe to drive. Cold-start emissions are higher, but the car runs normally.
The most common causes are: Blocked or leaking air hose; Failed check valve; Failing air pump; Failed air injection solenoid. A scan tool and a visual check of the parts above is where a technician starts.
Inspect the air hoses and check valve for blockage or leaks, then test the pump.
