DTC P0411 Secondary Air Injection System Incorrect Flow Detected: DTC Detecting Condition

WARNING: This page is about a different car, the 2012 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.

Detected when two consecutive driving cycles with fault occur.
GENERAL DESCRIPTION < Refer to DTC P0411 SECONDARY AIR INJECTION SYSTEM INCORRECT FLOW DETECTED , Diagnostic Trouble Code (DTC) Detecting Criteria.>
CAUTION: After servicing or replacing faulty parts, perform Clear Memory Mode < Refer to OPERATION , Clear Memory Mode.>, and Inspection Mode < Refer to PROCEDURE , Inspection Mode.>.

DIAGNOSIS PROCEDURE

Step	Check	Yes	No
1 CHECK SECONDARY AIR COMBINATION VALVE. Check the pipe between the secondary air combination valve and cylinder head.	Is there damage or disconnection of the pipe?	Replace the pipe between secondary air combination valve and cylinder head.	Go to step 2 .
2 CHECK SECONDARY AIR COMBINATION VALVE. Race the engine at 2, 00 rpm to check whether or not the exhaust leak is heard.	Is there any exhaust leak?	Replace the pipe between secondary air combination valve and cylinder head.	Repair the poor contact of ECM connector.