P0839

2017-10-10

Description:

  • The fault code P0839 indicates that there is an issue with the 4WD switch circuit, indicating a high signal input.

Possible Symptoms:

  • Illuminated 4WD warning light on the dashboard

  • Inability to shift into 4WD mode

  • Unintended shifting into 4WD mode

  • Reduced drivability or performance issues

Possible Causes:

  • Faulty or damaged 4WD switch

  • Faulty wiring or connections in the circuit

  • Loose or corroded electrical connections

  • Failed transfer case control module

Related Parts:

  • Four Wheel Drive Switch: Four Wheel Drive Switch engages the four wheel drive when required by the user. This car's switch has a problem which will lead to poor engine performance & wheel slipping

Possible Solutions:

  • Replace the 4WD switch

  • Check and repair any damaged wiring or connections

  • Tighten or clean any loose or corroded electrical connections

  • Replace the transfer case control module if necessary

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