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Home >> Subaru >> 2018 >> WRX STI >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostics) (3 Of 4) (STI) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P1410: Secondary Air Injection System Combination Valve Stuck Open >> Notes

DTC P1410: Secondary Air Injection System Combination Valve Stuck Open: Notes

DTC detecting condition: 

Immediately at fault recognition

CAUTION: After servicing or replacing faulty parts, perform Clear Memory Mode Ref. to ENGINE (DIAGNOSTICS) (STI)>Clear Memory Mode>OPERATION , and inspection mode Ref. to ENGINE (DIAGNOSTICS) (STI)>Inspection Mode>PROCEDURE .
  1. CHECK SECONDARY AIR COMBINATION VALVE  .
    1. Remove the secondary air combination valve. Ref. to EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES) (STI)>Secondary Air Combination Valve .
    2. Blow in air from the secondary air combination valve air inlet, and check whether there are leaks at the pipe connections.

    Are there air leaks from the pipe connections?

    Yes: Replace the secondary air combination valve on the side with the air leak. Ref. to EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES) (STI)>Secondary Air Combination Valve .

    No: Perform the diagnostic procedure of DTC P2440. Ref. to ENGINE (DIAGNOSTICS) (STI)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P2440 SECONDARY AIR SYSTEM SWITCHING VALVE STUCK OPEN BANK 1 .