At first it was just the battery code P1684 and the small evap code P0442. The professional versions of this machine are expensive, but a quick Google search will reveal ways to make your own at home. A normally open solenoid will permit vacuum when de-energized. Commonly, the gas cap is the cause of P0442, if the gas cap is overlooked it can waste time and energy diagnosing other components. The vehicle also has to be traveling at a certain speed with the throttle open a specific amount. The vent valve in Mazda 5 is located in the back of the car near the rear subframe.
Anyone fixed a P0442 that wasn't caused by gas cap or purge valve? The vent valve is normally open and closes when powered. This is a cheap and easy fix. Initially thought injector seals, but zero fuel smell there and no sign of leaking. There has never been any gas smell under the hood. How did the flywheel get damaged?! This is a great place to start. Always make sure to verify the fit for your vehicle.
I find it hard to believe that your 2012 car could possibly need spark plug replacements at this early age. Sometimes, more than one thing can be broken. A while back I smelled a whiff of gas once while driving, but haven't smelled it since. I called the dealer and they said is something related to emissions. A pressure sensor and vent-solenoid are not needed. Have you changed your driving pattern? P0122Throttle Position Sensor Circuit Low Voltage; P0123 Throttle Position Sensor.
The vent solenoid must be tested under vacuum and replaced if leaking. Using a bi-directional scan tool, you can command the valve closed and see if it responds or not. I have a 2004 mazda 6 with less than 100k on it. Also, possible faulty or loose gas cap. Consult the service information to determine whether the valve for your vehicle is normally open or normally closed. Mazda 3 P0442 Causes There are many things that can cause the P0442 trouble code on the Mazda 3. In most cases, indicates a leak no bigger than a pin prick, which translates to.
Even if the gas cap feels tight, it may not be sealing well. This is accomplished by trapping the fuel vapors in a charcoal canister when the engine is off. If rust coming out of the fuel cap, or the fuel cap seal looks damaged, the cap must be replaced. This is almost always the problem. You may also smell gas when driving. The problem might be caused by dirt, dust getting into the vent and restricting the air flow. It means a very small leak has been detected.
This is especially true right after you fuel up. In some Mazda 5 minivans, the code P0442 could be caused by a leaking vent valve. This allows the system to perform its self-test for leaks. My attention would be very much on the purge valve. Ideally I'd buy a smoke pump but maybe I can visually spot an issue. A Loose Gas Cap A loose gas cap will usually trigger a P0455 code for a large leak instead of a P0422.
There are springs inside the flywheel that wear out, more complex than just a piece of metal. Wish I had access to a lift. YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. But, if none of your testing has proved successful so far, you may want to take a look at the purge and vent valves. The smoke circulates through the system and eventually seeps out through the leak, making it visible. Note: The respective Powertrain Diagnostic Procedures Manual will direct the technician to determine if the vehicle evaporative system has an external system leak.
The vent valve can be tested separately. A leaking purge valve is a common cause of the code P0422 in some Mercedes, Hyundai, Nissan, Ford and Mazda vehicles. It can also be tested separately. It was designed to find small leaks consistent accuracy. You can also test the valve in a similar fashion to the way the purge valve is tested.