DTC P0411 Secondary Air System Incorrect Flow Detected: DTC Detecting Condition
- Detected when two consecutive driving cycles with fault occur.
- GENERAL DESCRIPTION < Ref. to DTC P0411 SECONDARY AIR SYSTEM INCORRECT FLOW DETECTED , Diagnostic Trouble Code (DTC) Detecting Criteria. >
CAUTION:
After servicing or replacing faulty parts, perform Clear Memory Mode < Ref. to
OPERATION , Clear Memory Mode. >, and Inspection Mode < Ref. to
PROCEDURE , Inspection Mode. >.
DIAGNOSTIC 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. < Ref. to SECONDARY AIR COMBINATION VALVE . > | Go to step 2. |
| 2 CHECK SECONDARY AIR COMBINATION VALVE. Race the engine at 2, 000 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. < Ref. to SECONDARY AIR COMBINATION VALVE . > | Repair the poor contact of ECM connector. |