P0703

2017-10-10

Description:

  • The fault code P0703 indicates that there is an issue with the brake switch circuit. This may cause various problems with the vehicle's brake system, including the inability to shift out of park or the brake lights remaining on while driving.

Possible Symptoms:

  • Inability to shift out of park

  • Brake lights remaining on while driving

  • Illuminated check engine light

  • Reduced brake performance

Possible Causes:

  • Faulty brake switch

  • Loose or corroded electrical connections in the circuit

  • Failed transmission control module (TCM)

  • Failed engine control module (ECM)

Related Parts:

  • Brake Switch Circuit: Brake switch is responsible for engaging and disengaging the brakes on the tires when brakes are applied. Problems lead to inefficient braking

Possible Solutions:

  • Replace the faulty brake switch

  • Check and repair any damaged wiring or connections

  • Tighten or clean any loose or corroded electrical connections

  • Replace the transmission control module (TCM) or engine control module (ECM) if necessary

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