OBD Guide
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P0411

AIR System A Incorrect Flow Detected

P0411 is an OBD-II diagnostic trouble code meaning: AIR System A Incorrect Flow Detected. Common causes: clogged or damaged secondary air system piping, malfunction of the solenoid valve (solenoid) of the system. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Check Engine Light Is On
  • Deterioration in acceleration dynamics
  • Increased fuel consumption
  • Unstable idle

Causes

  • Clogged or damaged secondary air system piping
  • Malfunction of the solenoid valve (solenoid) of the system
  • Problems with the secondary air pump
  • Leaks in the system
  • Pressure or air flow sensor malfunction
  • Problems with the wiring harness or connectors

How to Fix

  1. Check the integrity of the system pipelines for cracks or blockages
  2. Check the operation of the solenoid valve (solenoid)
  3. Check the serviceability of the secondary air pump
  4. Check the system for leaks
  5. Check the condition of the wiring harness and connectors
  6. If necessary, replace faulty components
  7. Reset the error and check if it returns

Related codes

P0410P0412P0413

Error P0411 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P0411 code mean?

P0411 is an OBD-II diagnostic trouble code that indicates: AIR System A Incorrect Flow Detected

What causes a P0411 error code?

The most common causes of P0411 include: Clogged or damaged secondary air system piping; Malfunction of the solenoid valve (solenoid) of the system; Problems with the secondary air pump; Leaks in the system.

How do I fix a P0411 diagnostic trouble code?

To fix P0411: Check the integrity of the system pipelines for cracks or blockages. Check the operation of the solenoid valve (solenoid). Check the serviceability of the secondary air pump. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0411?

Limited driving only, diagnose soon

How much does it cost to fix P0411?

The estimated repair cost for P0411 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat