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Technically Speaking, Stuck Check Valve: P1415 or P1416 Secondary Air Injection DIY Repair. ... the Secondary Air Injection pump is used on vehicles to help lower tailpipe emissions on start-up.
Technically Speaking, Stuck Check Valve: P1415 or P1416 Secondary Air Injection DIY Repair. ... the Secondary Air Injection pump is used on vehicles to help lower tailpipe emissions on start-up.