P0579

2017-10-10

Description:

  • The fault code P0579 indicates that there is an issue with the input circuit of the cruise control multi-function switch A, which is producing a higher than expected voltage. This can lead to the cruise control system malfunctioning or failing entirely.

Possible Symptoms:

  • Malfunctioning cruise control system

  • Illuminated cruise control warning light

  • Inoperative cruise control system

  • Harsh shifting of the transmission

Possible Causes:

  • Faulty cruise control switch

  • Damaged wiring or connections in the cruise control system circuit

  • Malfunctioning cruise control module

  • Failed engine control module (ECM)

Related Parts:

  • Cruise Control Circuit: Cruise control automatically controls the speed of a car by maintaining a steady speed as set by the driver. Problems lead to car not able to cruise at a constant speed

Possible Solutions:

  • Replace the faulty cruise control switch

  • Check and repair any damaged wiring or connections in the cruise control system circuit

  • Replace the malfunctioning cruise control module

  • Replace the engine control module (ECM) if necessary

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