DTC P2279
DTC P2279 : Intake Air System Leak
NOTE:
- Before you troubleshoot, review the general troubleshooting information .
- If DTC P0443 is stored at the same time as DTC P2279, troubleshoot DTC P0443 first, then recheck for DTC P2279.
| DTC Description | Confirmed DTC | Pending DTC |
|---|---|---|
| P2279 Intake Air System Leak |
DTC (PGM-FI)
- Intake air system visual check:
Check for vacuum leaks at these parts:
- PCV valve
- PCV hose
- Purge (PCS) line
- Throttle body
- Intake manifold
Are the parts OK?
YES
Go to step 2.
NO
Repair or replace any leaking part(s).
- Problem verification
-1. Turn the vehicle to the ON mode.
-2. Clear the DTC with the HDS.
-3. Enter the maintenance mode, then start the engine .
-4. Hold the engine speed at 3, 000 rpm without load (in P or N) until the radiator fan comes on, then let it idle for 1 minute.
-5. Monitor the OBD STATUS for DTC P2279 in the DTCs MENU with the HDS.
DTC Description OBD STATUS P2279 Intake Air System Leak Does the HDS indicate FAILED?
YES
The failure is duplicated. Check the camshaft timing and adjust it if needed . If the cam timing is OK, check the valve clearance adjustment and set to specification .
NO
If the HDS indicates PASSED, there is an intermittent failure and the system is OK at this time. Check for vacuum leaks at the PCV valve, the PCV hose, the purge (PCS) line, the throttle body, and the intake manifold. If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot . If the HDS indicates EXECUTING, keep idling until a result comes on. If the HDS indicates OUT OF CONDITION, go to step 2-1 and recheck.