P04F3
Generic code
Free on OBD DashX
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What P04F3 means
- 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
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
Free on OBD DashX
P04F3 on OBD DashX
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