OBD Guide
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P0041

O2 Sensor Signals Swapped Bank 1 Sensor 2/Bank 2 Sensor 2

P0041 is an OBD-II diagnostic trouble code meaning: O2 Sensor Signals Swapped Bank 1 Sensor 2/Bank 2 Sensor 2. Common causes: incorrect installation of oxygen sensors after repair, confused sensor connectors when connecting. Estimated repair cost: $11–33.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$11–33 (est.)

Symptoms

  • Check Engine Light Illuminated
  • Increased fuel consumption
  • Unstable engine operation at idle
  • Reduced engine power
  • Incorrect operation of the fuel control system
  • Possible problems with passing environmental control

Causes

  • Incorrect installation of oxygen sensors after repair
  • Confused sensor connectors when connecting
  • Error when replacing oxygen sensors
  • Unqualified tampering with sensor wiring
  • Factory defects during car assembly (extremely rare)

How to Fix

  1. Connect the diagnostic scanner and read the error codes
  2. Determine the location of the downstream oxygen sensors on each row
  3. Check the sensor connection diagram according to the technical documentation
  4. Disconnect both downstream oxygen sensor connectors
  5. Swap the sensor connectors or the sensors themselves
  6. Make sure the connection is correct according to the markings
  7. Clear error codes using a scanner
  8. Start the engine and take a test drive
  9. Rescan the system to confirm that the error has been resolved

Related codes

P0031P0032P0037P0038P0051P0052P0057P0058P0131P0141

Error P0041 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P0041 code mean?

P0041 is an OBD-II diagnostic trouble code that indicates: O2 Sensor Signals Swapped Bank 1 Sensor 2/Bank 2 Sensor 2

What causes a P0041 error code?

The most common causes of P0041 include: Incorrect installation of oxygen sensors after repair; Confused sensor connectors when connecting; Error when replacing oxygen sensors; Unqualified tampering with sensor wiring.

How do I fix a P0041 diagnostic trouble code?

To fix P0041: Connect the diagnostic scanner and read the error codes. Determine the location of the downstream oxygen sensors on each row. Check the sensor connection diagram according to the technical documentation. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0041?

Do not drive — repair immediately

How much does it cost to fix P0041?

The estimated repair cost for P0041 is $11–33. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat