P2279

DTC P2279: Intake Air System Leak Detected

1. Reset the ECM.
2. Start the engine. Hold the engine at 3,000 rpm with no-load (in neutral) until the radiator fan comes on.
3. Let the engine idle for at least 40 seconds with the throttle fully closed.
4. Check for DTC with a scan tool or the HDS.

Is DTC P2279 indicated?

YES - Check these parts for vacuum leaks.
- PCV valve
- PCV hose
- EVAP canister purge valve
- Throttle body
- Brake booster hose
- Intake manifold gasket

NO - Intermittent failure, system is OK at this time.