Subaru Error Code P1400: How to Fix It

Q: Can I drive my Subaru with error code P1400?

Yes, you can typically drive with P1400 as it's an emissions-related code that won't cause immediate engine damage. However, you should address it promptly as it may affect fuel economy and your vehicle won't pass emissions testing.

Q: What causes Subaru error code P1400?

Common causes include a faulty fuel tank pressure control solenoid, damaged pressure sensor, cracked vacuum lines, blocked vent system, or issues with the charcoal canister in the evaporative emissions system.

Q: How much does it cost to fix P1400 on a Subaru?

Repair costs typically range from $150-$500 depending on the failed component. A pressure control solenoid costs $50-$150, while a pressure sensor runs $100-$250. Labor costs vary but expect 1-3 hours of shop time.

Q: Will P1400 cause my Subaru to fail inspection?

Yes, P1400 is an emissions-related code that will typically cause your vehicle to fail state emissions or safety inspections. The code must be resolved and the system must show 'ready' status before passing inspection.

Q: How do I prevent P1400 from coming back?

Prevent P1400 by avoiding overfilling the gas tank, replacing the fuel cap if damaged, keeping up with regular maintenance, and addressing any fuel system issues promptly. Use quality fuel and avoid contamination in the tank.

Abstract

Subaru error code P1400 indicates a problem with the fuel tank pressure control solenoid valve in your vehicle's evaporative emission control system. This code typically appears when the system cannot properly control fuel vapor pressure, which can affect emissions and fuel efficiency but won't prevent your car from running.