Please check your local store for availability. It’s not going to leave you stranded on the side of the road either.Product, service availability, and selection may vary by store. While there are only a couple of common things that’ll cause P0453, there it can be tough to diagnose it without the right equipment. If everything looks like its is on the up and up, there could be a bent line running from the charcoal canister to the engine, or the PCM is bad. If the vent valve doesn’t come on, it will need replacement in order to clear P0453. If the vent valve comes on, and the pressure sensor is fine, then the charcoal canister will need replacement. If that checks out, the fuel pressure sensor will need replacement. If the fuel tank pressure data is out of spec, a mechanic will inspect the wiring going to the fuel pressure sensor. Depending on the model and year of vehicle in question, you can hear this happening with the engine off. They will also command the vent valve to open and close.A mechanic will capture the fuel pressure sensor data, to see if it is detecting vacuum in the fuel tank.Even this is challenging, since you often need to drop the tank to even look at it.
2008 chevy cobalt gas tank professional#
If it isn’t then the only way to really diagnose it is with a professional mechanic’s scanner.
Check the wiring to the fuel tank pressure sensor and see if it looks frayed or damaged in any way.It’s hard to notice the sound when you’re at a noisy gas station. After driving for a while, open the gas cap somewhere quiet. If you happen to notice the sound of air escaping when you take your Cobalt’s gas cap off, that is a telltale sign that the vent valve is bad, or the charcoal canister is bad(it’s pressure leaving the gas tank).Damaged fuel tank pressure sensor (sensor itself or the wiring)ĭiagnosing P0453 in your Cobalt can be challenging if you don’t have a scan tool that is capable of reading the fuel pressure sensor data or capable of commanding the vent valve to open and close.Charcoal canister (vent valve or clogged).Here are the more common causes of P0453: If the EVAP system is not properly purging the fuel vapor, it will find other ways to escape. The only thing that you may notice is the smell of fuel. The check engine light will illuminate (that’s why you’re here). Typically, there are no symptoms associated with this code.
2008 chevy cobalt gas tank code#
The opposite of this code is P0452, which is thrown whenever the system pressure is too low. The fuel tank pressure sensor is typically on the top of the gas tank, fuel pump, or fuel level sending unit. This is a measure of air pressure in the tank, not fuel pressure. The fuel tank pressure sensor is what detects that the pressure in the system is too high. It uses a valve to open and close the system to release fuel vapor into the engine to be burned off. Although, we are not endorsing ignoring this code. Whether it is doing that or not, has no effect on the way your engine runs. The EVAP system is responsible for migrating fuel vapor. If the only trouble code that you have is P0453, your Cobalt is in no risk of breaking down. When the pressure inside of the fuel tank is too high, P0453, is thrown and the check engine light comes on. Your Chevy Cobalt utilizes an evaporative emissions control (EVAP) system to migrate fuel vapors from the gas tank and fuel filler neck, and sends them to the engine to be burned off.
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