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EGR valve

P0411 Secondary air pump not delivering enough air

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P0411 means: Secondary air pump not delivering enough air. The secondary air pump blows air into the exhaust on a cold start so the catalytic converter warms up faster. OK to drive, but have it checked soon. The repair usually costs about €80–500 in Estonia.

Is it safe to drive?OK to driveOK to drive, but have it checked soon.
Typical repair cost€80–500parts and labour in Estonia

What it means

The secondary air pump blows air into the exhaust on a cold start so the catalytic converter warms up faster. Not enough air is flowing.

What could be wrong

  1. 1Secondary air pump has failed (often from moisture)
  2. 2Check valve is stuck
  3. 3Hose is loose or split
  4. 4Pump relay or fuse

What you can check yourself

Listen on a cold start: the pump should hum for the first couple of minutes. You can check the simple things yourself, but the repair is best done in a workshop.

How we fix it

  1. We check the pump and valve operation
  2. We check the hoses
  3. We replace the pump or valve

Standard SAE description: Secondary Air Injection System Incorrect Flow Detected

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 P0411 mean?

Secondary air pump not delivering enough air. The secondary air pump blows air into the exhaust on a cold start so the catalytic converter warms up faster. Not enough air is flowing.

Can I drive with code P0411?

OK to drive, but have it checked soon.

How much does it cost to fix P0411?

Roughly €80–500 in Estonia. The price depends on exactly what has failed and on the car.

How is P0411 fixed?

We check the pump and valve operation. We check the hoses. We replace the pump or valve.

Related codes

P0400EGR valve not working properlyP0401Too little gas flowing through the EGR valveP0402Too much gas flowing through the EGR valveP0403Fault in the EGR valve wiringP0404EGR valve isn't where it should beP0405EGR valve position sensor signal too lowP0406EGR valve position sensor signal too highP0490Short circuit in the EGR valve wiring

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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