P04F3

2017-10-10

Description:

  • Catalyst Heater Supply Voltage Bank 2

Possible Symptoms:

  • Check the wiring and connections of the catalyst heater in bank 2

  • Test and replace the catalyst heater in bank 2 if necessary

  • Inspect and replace any faulty fuses related to the catalyst heater in bank 2

  • Reset the OBD 2 error code and monitor if it reoccurs

Possible Causes:

  • Faulty oxygen sensor in Bank 2

  • Malfunctioning catalytic converter in Bank 2

  • Issues with the wiring or connectors related to the catalyst heater in Bank 2

  • Engine control module (ECM) malfunction related to catalyst heater in Bank 2

  • Faulty airflow sensor or fuel injector in Bank 2

Related Parts:

Possible Solutions:

  • Check engine light illuminates on the dashboard

  • Engine misfires or runs rough

  • Decreased engine performance or power

  • Increased fuel consumption

  • Poor vehicle acceleration or sluggishness

Search