P04B0
Refueling Vapor Control Valve Circuit/Open
P04B0 is an OBD-II diagnostic trouble code meaning: Refueling Vapor Control Valve Circuit/Open. Common causes: broken or damaged wires in the valve circuit, fuel vapor control valve malfunction. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Increased fuel consumption
- The smell of fuel in the cabin or around the car
Causes
- Broken or damaged wires in the valve circuit
- Fuel vapor control valve malfunction
- Problems with the relay or circuit fuse
- Engine control module (ECU) malfunction
How to Fix
- Check the integrity of wires and connectors in the valve circuit
- Check the resistance of the fuel vapor control valve
- Check the functionality of the relays and fuses
- If necessary, replace the valve or repair the wiring
- Reset the error code and check if it appears again
Related codes
Error P04B0 by Vehicle Brand
FAQ
What does the P04B0 code mean?
P04B0 is an OBD-II diagnostic trouble code that indicates: Refueling Vapor Control Valve Circuit/Open
What causes a P04B0 error code?
The most common causes of P04B0 include: Broken or damaged wires in the valve circuit; Fuel vapor control valve malfunction; Problems with the relay or circuit fuse; Engine control module (ECU) malfunction.
How do I fix a P04B0 diagnostic trouble code?
To fix P04B0: Check the integrity of wires and connectors in the valve circuit. Check the resistance of the fuel vapor control valve. Check the functionality of the relays and fuses. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P04B0?
Limited driving only, diagnose soon
How much does it cost to fix P04B0?
The estimated repair cost for P04B0 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat