OBD Guide
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P2494

EGR Cooler Bypass Position Sensor Circuit Low Bank 1

P2494 is an OBD-II diagnostic trouble code meaning: EGR Cooler Bypass Position Sensor Circuit Low Bank 1. Common causes: egr cooler bypass position sensor malfunction, open or short circuit in sensor wiring. Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced engine power
  • Unstable engine operation at idle
  • Increased fuel consumption
  • Possible problems with passing technical inspection

Causes

  • EGR cooler bypass position sensor malfunction
  • Open or short circuit in sensor wiring
  • Poor connection in the sensor connector
  • EGR cooler bypass valve malfunction
  • ECU malfunction (rare)

How to Fix

  1. Check the sensor wiring and connectors for damage.
  2. Check the EGR cooler bypass position sensor using a multimeter.
  3. Check the EGR cooler bypass valve for sticking or damage.
  4. Replace faulty components (sensor, valve, wiring).
  5. Reset the error code and see if it appears again.

Related codes

P2493P2495P0401

Error P2494 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P2494 code mean?

P2494 is an OBD-II diagnostic trouble code that indicates: EGR Cooler Bypass Position Sensor Circuit Low Bank 1

What causes a P2494 error code?

The most common causes of P2494 include: EGR cooler bypass position sensor malfunction; Open or short circuit in sensor wiring; Poor connection in the sensor connector; EGR cooler bypass valve malfunction.

How do I fix a P2494 diagnostic trouble code?

To fix P2494: Check the sensor wiring and connectors for damage.. Check the EGR cooler bypass position sensor using a multimeter.. Check the EGR cooler bypass valve for sticking or damage.. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P2494?

Yes, but get it checked soon

How much does it cost to fix P2494?

The estimated repair cost for P2494 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

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