The EVAP purge valve works like a solenoid to help harmful gases exit safely. This valve is either near the engine’s throttle body or under the car by the fuel tank. The EVAP purge valve plays an important role in preventing emissions from your vehicle. For this, you can go to your nearby mechanic to have a professional smoke test done for the EVAP system. You might also need to perform a smoke test using a smoke machine to detect any leaks in EVAP hoses before proceeding further. Any smoke oozing from the system will lighten up in the ultraviolet light. You can use a UV light across the car’s underside, following the system’s path from the engine section to the rear fuel tank to inspect the EVAP system connections. Finding any dirty or damaged parts makes fixing the problem easier. This makes a big vacuum in the EVAP system.Īlso check around the hoses and tubes connecting to the EVAP for debris or junk that should not be there.Ī visual check of the whole EVAP system is a good first step when the P1450 code comes on. The vacuum hose from the purge valve to the engine air intakeĪny kinks in the hoses can cause issues by lowering the pressure too much.The fuel vapor elbow on the EVAP canister for dirt or gunk.The EVAP canister tube for blocks or sharp bends.Carefully check all the hoses, wires and connections before removing any parts. Troubleshooting the P1450 trouble code in your Ford truck starts with a close look at the EVAP system. Kinks or Bends, Crack, Debris in the Fuel Vapor Hoses/Tubes ![]() To understand how exactly EVAP system works, you can my guide on car sputtering after filling gas. So, it is important to troubleshoot the P1450 trouble code even if your vehicle is running fine. When there is excessive fuel in the air-fuel mixture, fuel will not be completely burnt, due to which the car takes several tries to start after it is refilled with the fuel.Īlso, if an excessive vacuum is developed inside the EVAP system it can cause the fuel tank to collapse. This happens when the purge valve is stuck open, excessive fuel vapors enter the engine cylinder. I have stated this reason in my article on car not starting after getting gas. However, some users report that due to P1450, your Ford vehicle might face issues with starting. i won’t cause any vehicle performance issues like rough idling etc. The only noticeable symptom of the P1450 code in Ford vehicles is that the check engine light turns on. P1450 code does not interrupt driving like other trouble codes. ![]() Cleared the code and no issues since! What Are The Symptoms of P1450 Code? We ordered a new valve online for $30 and installed it in about 30 minutes. It wouldn’t hold pressure, indicating it was stuck open. After some research, we tested the purge valve by connecting a hand vacuum pump. A few months ago his check engine light came on with a P1450 code. My brother drives an older Ford F-150 pickup. Canister Vent Valve is Damaged or Stuck Closed You can also read my guide on causes of P0171 Code. Think of this guide as your new best friend when that frustrating engine code pops up. Let’s explore why P1450 happens and how to banish it for good. With basic skills and tools, you can solve this and get back to smooth cruising fast. Ignoring this could mean staring at a glowing check engine light and watching your fuel economy drop.īut don’t panic. It tells you something is up with the evaporative emissions system vent valve – not good. The P1450 code can leave Ford drivers feeling uneasy. The engine computer monitors fuel vapor levels by opening and closing the EVAP purge valve, so if this valve malfunctions, it can cause the P1450 code to set. Common causes for P1450 are a stuck open purge valve not closing properly, an EVAP canister that is defective and failing to absorb fuel vapors, or a faulty fuel tank pressure sensor providing inaccurate readings to the PCM. This code pertains to the evaporative emissions control system. This engine trouble code specifically means “Unable To Bleed Up Fuel Tank Vacuum” and sets when the powertrain control module (PCM) detects higher than expected vacuum in the fuel tank while the vehicle is in motion. The P1450 is an OBD-II generic code indicating an issue controlling vacuum in the fuel tank during driving.
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