AutoCodes - Bmw - P0411 BMW

P0411 BMW Code - Secondary Air Injection System Incorrect Flow Detected

Repair Importance Level: 2/3
Repair Difficulty Level: 2/3
Table of contents

|P0411 BMW code possible causes

  • Faulty Vacuum hoses damaged
  • Faulty Secondary Air Pump inoperative
  • Faulty One-Way Check Valve

|How do I fix the P0411 BMW code?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|Cost of diagnosing the P0411 BMW code

Labor: 1.0

The cost of diagnosing the P0411 BMW code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|When is the P0411 BMW code detected?

The secondary air injection system does not detect the presence of air in the exhaust when introduced by the secondary air injection system.

|What are P0411 BMW code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Engine hesitation

|P0411 BMW code description

The Air Injection (AIR) System refers to an emissions control system used by some vehicle manufacturers. It is often called secondary air injection, because air, more specifically oxygen, is injected into the exhaust manifold after start up. Vehicles start on a comparatively rich mixture to allow for smoother running conditions. However this has a large impact on exhaust gas emissions. A notable increase in hydrocarbon (HC) and carbon monoxide (CO) emissions is found under these rich start conditions. By injecting air in to the exhaust manifold the CO and HC can be oxidised. This reaction increases the temperature within the exhaust and the exhaust gas after treatment system i.e. catalytic converter can begin working earlier due to meeting its light off temperature.
The system consists of an air pump, one way check valve and associated pipework. The system operates for a predetermined time after start up. Normally this duration is approximately three minutes, when cold.
OBDII Code P0411 Bmw - Secondary Air Injection System Incorrect Flow Detected -

|Need more information with the P0411 BMW code?

Need more information on how to fix the P0411 BMW code? Get Access to Factory Service Manuals

|Need help with a P0411 BMW code?

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|P0411 BMW code comments

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