P0494

2017-10-10

Description:

  • The fault code P0494 indicates that the fan speed in the cooling system is lower than the expected range. This can lead to inadequate cooling of the engine and potential overheating issues.

Possible Symptoms:

  • Engine overheating

  • Temperature gauge reading higher than normal

  • Check Engine Light illuminated

  • Lack of airflow from the radiator fans

  • Reduced air conditioning performance, if the cooling fans are shared with the AC system

Possible Causes:

  • Faulty cooling fan motor

  • Malfunctioning cooling fan relay

  • Wiring or connector problems in the cooling fan circuit

  • Defective engine coolant temperature sensor

  • Faulty engine control module (ECM)

Related Parts:

  • Cooling Fan: Radiator fan. Problems lead to engine overheating

Possible Solutions:

  • Inspect and replace the faulty cooling fan motor, if necessary

  • Test and replace the malfunctioning cooling fan relay, if required

  • Check for wiring or connector issues in the cooling fan circuit and repair as needed

  • Replace the defective engine coolant temperature sensor, if needed

  • Consider replacing the engine control module (ECM) if all components are functioning correctly

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