DTC P2279
DTC P2279 : Intake Air System Leak
- Before you troubleshoot, record all freeze data and any on-board snapshot, and 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 | Freeze Frame |
|---|---|---|---|
| P2279 Intake Air System Leak |
DTC (PGM-FI)
- Intake air system visual check
-1. Check for vacuum leaks at these parts:
- PCV valve
- PCV hose
- Purge (PCS) line
- Throttle body
- Intake manifold
- Brake booster
- Brake booster hose
Are the parts OK?
YES
Go to step 2.
NO
Repair or replace any leaking part(s), then do the repair verification.
- Problem verification
-1. Let the engine cool until the value of ECT SENSOR 1 is 140 deg.F (60 deg.C) or less.
Signal Current conditions Values Unit ECT SENSOR 1 -2. Clear the DTC with the HDS.
-3. Start the engine, and let it idle for 10 seconds or more.
-4. Monitor the OBD STATUS for DTC P2279 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 adjustment and set to specification , then do the repair verification.
NO
If the HDS indicates PASSED, intermittent failure, 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, the intake manifold, the brake booster, and the brake booster hose. 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.
- Repair verification (OBD STATUS check)
-1. Turn the vehicle to the ON mode.
-2. Reset the PCM with the HDS .
Reset PCM
-3. Do the PCM idle learn procedure .
-4. Let the engine cool until the value of ECT SENSOR 1 is 140 deg.F (60 deg.C) or less.
Signal Current conditions Values Unit ECT SENSOR 1 -5. Start the engine, and let it idle for 10 seconds or more.
-6. Monitor the OBD STATUS for DTC P2279 with the HDS.
DTC Description OBD Status P2279 Intake Air System Leak DTC (PGM-FI)
Does the HDS indicate PASSED, FAILED, EXECUTING, or OUT OF CONDITION
PASSED
Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated, go to indicated DTC's troubleshooting.
FAILED
Go to step 1 and recheck.
EXECUTING
Keep the test conditions until a result comes on.
OUT OF CONDITION
Meet the test conditions, and check the OBD STATUS again.