Subaru P1451: Evaporative Emission Control System (Large Leak Detected)
Is your scanner showing Subaru P1451?
No worries. We'll show you what it means and how to deal with it.
Subaru P1451: Evaporative Emission Control System (Large Leak Detected)
OVERVIEWWhat Does The Subaru P1451 Code Mean?
The leak pressure is higher than reference pressure. Judge as clogging of pipe if the leak pressure becomes lower than the reference pressure within the specified amount of time. 0.02 inch leak and 0.04 inch leak can be distinguished by measuring the leak pressure.
What Are The Potential Causes Of The Subaru P1451 Code?
- Fuel cap loose, or missing
- Drain tube between the canister and leak check valve assembly
- Hoses between the canister and fuel tank
- Faulty canister
- Faulty leak check valve assembly
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> Twippo 372Pcs Waterproof Wire Connectors Kit
>>> Subaru Genuine 42031AG000 Gas Filler Cap
>>> Subaru Canister
>>> Leak Check Valve Assembly
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
Technical Service Bulletin for P1451 – 2005MY and Newer Vehicles
