P04B3
Refueling Vapor Control Valve Stuck Performance/Stuck Open
P04B3 is an OBD-II diagnostic trouble code meaning: Refueling Vapor Control Valve Stuck Performance/Stuck Open. Common causes: fuel vapor control valve jammed, open or short circuit in valve control circuit. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- The smell of gasoline in the cabin or near the car
- Increased fuel consumption
- Problems with fuel refueling (interruption of supply)
Causes
- Fuel vapor control valve jammed
- Open or short circuit in valve control circuit
- Engine control unit (ECU) malfunction
- Mechanical damage to the EVAP valve or tubes
How to Fix
- Check the mechanical condition of the fuel vapor control valve
- Check valve control circuit for open/short circuit.
- Check the resistance and operation of the solenoid part of the valve
- Check the pressure and tightness of the EVAP system
- Replace faulty valve if necessary
Related codes
Error P04B3 by Vehicle Brand
FAQ
What does the P04B3 code mean?
P04B3 is an OBD-II diagnostic trouble code that indicates: Refueling Vapor Control Valve Stuck Performance/Stuck Open
What causes a P04B3 error code?
The most common causes of P04B3 include: Fuel vapor control valve jammed; Open or short circuit in valve control circuit; Engine control unit (ECU) malfunction; Mechanical damage to the EVAP valve or tubes.
How do I fix a P04B3 diagnostic trouble code?
To fix P04B3: Check the mechanical condition of the fuel vapor control valve. Check valve control circuit for open/short circuit.. Check the resistance and operation of the solenoid part of the valve. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P04B3?
Limited driving only, diagnose soon
How much does it cost to fix P04B3?
The estimated repair cost for P04B3 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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