P0593

2017-10-10

Description:

  • The fault code P0593 refers to a malfunction in the cruise control multi-function input circuit B. This may affect the proper functioning of the cruise control system.

Possible Symptoms:

  • Illuminated check engine light

  • Inability to set or maintain cruise control speed

  • Unresponsive cruise control switches

  • Malfunctioning cruise control system.

Possible Causes:

  • Failed cruise control multi

  • function switch B

  • Corroded or damaged electrical connections

  • Failed cruise control module

  • Failed powertrain control module (PCM)

Related Parts:

  • Vehicle Speed Sensor:

Possible Solutions:

  • Replace/repair the cruise control switch if necessary

  • Check and repair any damaged or corroded connections in the circuit

  • Replace the cruise control module if necessary

  • Replace the powertrain control module (PCM) if necessary

  • Clear the fault code and test the system after each step to determine if the fault is resolved

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