DTC P0411 Secondary Air Injection System Incorrect Flow Detected: DTC Detecting Condition
- Detected when two consecutive driving cycles with fault occur.
- GENERAL DESCRIPTION <Ref. 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 <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. |