P1426
Tank Ventilation Valve Open Circuit
P1426 is an OBD-II diagnostic trouble code meaning: Tank Ventilation Valve Open Circuit. Common causes: broken wires to the ventilation valve, oxidation or corrosion of connector contacts. Estimated repair cost: $17–56.
Symptoms
- Check Engine Light Is On
- Difficulty filling the fuel tank
- Hissing noise when opening the gas cap
- Slight deterioration in vehicle dynamics
- Increased fuel consumption
Causes
- Broken wires to the ventilation valve
- Oxidation or corrosion of connector contacts
- Malfunction of the solenoid valve itself
- Damage to the EVAP system wiring harness
- Problems with the engine control unit
How to Fix
- Visual inspection of valve wiring and connectors
- Checking the valve winding resistance with a multimeter
- Checking the voltage supply to the valve
- Replacing a faulty tank ventilation valve
- Repair or replace damaged wiring
Related codes
Error P1426 by Vehicle Brand
FAQ
What does the P1426 code mean?
P1426 is an OBD-II diagnostic trouble code that indicates: Tank Ventilation Valve Open Circuit
What causes a P1426 error code?
The most common causes of P1426 include: Broken wires to the ventilation valve; Oxidation or corrosion of connector contacts; Malfunction of the solenoid valve itself; Damage to the EVAP system wiring harness.
How do I fix a P1426 diagnostic trouble code?
To fix P1426: Visual inspection of valve wiring and connectors. Checking the valve winding resistance with a multimeter. Checking the voltage supply to the valve. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1426?
Yes, but get it checked soon
How much does it cost to fix P1426?
The estimated repair cost for P1426 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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