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Fuel and air

P2279 Air leak in the intake

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P2279 means: Air leak in the intake. The engine computer thinks there is an air leak in the intake. Drive gently and have the car checked soon. The repair usually costs about €40–400 in Estonia. The most common cause: cracked hose or loose clamp. Other possible causes: leaking intake gasket, crankcase breather valve.

Is it safe to drive?Get it checked soonDrive gently and have the car checked soon.
Typical repair cost€40–400parts and labour in Estonia

What it means

The engine computer thinks there is an air leak in the intake. The measured and expected air flow don't match.

What could be wrong

  1. 1Cracked hose or loose clamp
  2. 2Leaking intake gasket
  3. 3Crankcase breather valve
  4. 4Mass air flow sensor reads wrong

What you can check yourself

Listen at idle for a hissing sound. Check the hoses from the air filter to the engine. You can check the simple things yourself, but the repair is best done in a workshop.

How we fix it

  1. We smoke-test the intake
  2. We check the crankcase breather
  3. We replace the leaking hose or gasket

Standard SAE description: Intake Air System Leak

This code usually comes with: Check engine lightSee what the light means →

Want a definite answer?

Bring the car to our workshop in Estonia for diagnostics. We read the fault codes, test the sensors and tell you what is wrong. Repair price depends on the work involved, generally €45 per hour.

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Questions

What does fault code P2279 mean?

Air leak in the intake. The engine computer thinks there is an air leak in the intake. The measured and expected air flow don't match.

Can I drive with code P2279?

Drive gently and have the car checked soon.

How much does it cost to fix P2279?

Roughly €40–400 in Estonia. The price depends on exactly what has failed and on the car.

How is P2279 fixed?

We smoke-test the intake. We check the crankcase breather. We replace the leaking hose or gasket.

Related codes

P2278Oxygen sensor: readings don't match (bank 1, sensor 3)P2277Oxygen sensor: mixture too rich (bank 2, sensor 3)P2633Fuel pump: signal or voltage too low ("B")P2634Fuel pump: signal or voltage too high ("B")P2635Fuel pump: reading or operation not right ("A")P0093Large leak in the fuel system

Based on AI combined with our hands-on workshop experience and knowledge. This information is general and prices are approximate (Estonian workshop rates). The same code can mean different things on different cars. Only an inspection of the car gives a definite answer.

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