P0647

2017-10-10

Description:

  • The fault code P0647 indicates that there is an issue with the air conditioning clutch relay circuit. This may cause the air conditioning system to not work properly or not work at all.

Possible Symptoms:

  • Air conditioning system not working or not working properly

  • Illuminated check engine light

  • No cool air coming from the vents

Possible Causes:

  • Faulty air conditioning clutch relay

  • Corroded or damaged wiring in the circuit

  • Loose or damaged electrical connections

  • Failed engine control module (ECM)

Related Parts:

  • AC Clutch Relay: The A/C clutch runs the A/C compressor. Problems lead to reduced or no AC cooling

Possible Solutions:

  • Replace the air conditioning clutch relay

  • Check and repair any damaged wiring or connections

  • Tighten or clean any loose or corroded electrical connections

  • Replace the engine control module (ECM) if necessary

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