P03F4
B Camshaft Profile Actuator C Control Performance/Stuck Off Bank 1
Generic OBD-II
Common symptoms
What you'll notice
- Inspect and clean the B camshaft profile actuator and its components
- Check for any wiring or connector issues related to the actuator
- Replace the B camshaft profile actuator if necessary
- Conduct a thorough inspection and potential repair of the valve timing system
Common causes
Most likely first
- Faulty camshaft position sensor
- Damaged or worn
- out camshaft
- Malfunctioning camshaft actuator solenoid
- Blocked or clogged oil passages in the camshaft system
- Faulty engine control module (ECM) or powertrain control module (PCM)
How to diagnose & fix
Work through it in order
- Check engine light is illuminated
- Decreased engine performance or power
- Rough idling or engine misfires
- Poor fuel efficiency
- Engine stalling or difficulty starting
Read & clear P03F4 yourself
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