P0649

2017-10-10

Description:

  • The fault code P0649 indicates a problem with the control circuit of the speed control lamp. This fault code typically points to an issue with the wiring, connectors, or the instrument cluster related to the speed control system.

Possible Symptoms:

  • Malfunction Indicator Lamp (MIL) or Check Engine Light illuminated

  • Speed control lamp not functioning or displaying incorrect status

  • Inoperative speed control system or cruise control

  • Possible issues with speed control activation or deactivation

  • Potential difficulties in setting or adjusting the speed control

  • Vehicle may not maintain a consistent speed when engaged

Possible Causes:

  • Faulty speed control lamp

  • Wiring or connection issues in the speed control lamp control circuit

  • Malfunctioning instrument cluster

  • Faulty speed control switch

  • Electrical or communication issues within the speed control system

Related Parts:

  • Vehicle Speed Sensor:

Possible Solutions:

  • Inspect and test the speed control lamp for proper functionality, and replace it if necessary

  • Check the wiring and connections in the speed control lamp control circuit for any damage, loose connections, or corrosion, and repair as needed

  • Test and replace the instrument cluster if it is found to be malfunctioning

  • Test and replace the faulty speed control switch if necessary

  • Check the electrical connections and communication lines within the speed control system, and address any issues found

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