P05F4

2017-10-10

Description:

  • Exhaust Aftertreatment Power Relay Control Circuit Low

Possible Symptoms:

  • Check the wiring connections for the exhaust aftertreatment power relay and ensure they are secure and free from any damage.

  • Inspect the exhaust aftertreatment power relay for any signs of malfunction or failure, and replace if necessary.

  • Verify the power supply and ground connections to the exhaust aftertreatment system, ensuring they are properly connected and functioning.

  • Clean the exhaust aftertreatment system components, such as sensors and filters, to remove any buildup or blockage that may be causing the power relay control circuit issue.

Possible Causes:

  • Faulty power relay

  • Loose or damaged wiring/connectors in the power relay circuit

  • Defective exhaust aftertreatment power relay control module

  • Short circuit or electrical issue in the power relay control circuit

Related Parts:

Possible Solutions:

  • Engine warning light illuminates on the dashboard

  • Engine may experience a decrease in power or struggle to start

  • Increased fuel consumption

  • Loss of acceleration or reduced top speed

  • Exhaust emission levels may exceed legal limits

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