Error code
OBD2 P2279
OBD2P2279
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Intake Air System Leak.
Severity
moderateCan drive, but performance issues and potential damage may occur.
Summary
P2279 indicates an intake air system leak in your vehicle's engine, allowing unmetered air to enter and disrupt the air/fuel mixture.
Symptoms
- Engine misfires
- Poor fuel economy
- Check Engine light
Common Causes
- Leaking intake manifold gasket
- Defective MAF or MAP sensor
- Throttle body seal leakage
- Fuel injector seal failure
- Brake booster vacuum line leak
- PCV system malfunction
Diagnosis
- Inspect intake manifold gaskets for leaks
- Check MAF and MAP sensors for faults
- Examine throttle body seal condition
- Test fuel injector seals
- Verify brake booster vacuum line integrity
Fixes
- Replace faulty sensor or gasket
FAQ
What causes P2279?
Common causes include leaking intake manifold gaskets, defective sensors, and vacuum line issues.
Is it safe to drive with P2279?
It's drivable but performance may be affected and there could be potential for further engine damage.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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