10/12/2023 0 Comments 2008 chevy cobalt gas tankIt is really worth a watch if you are going to try and tackle this yourself.Ī common mistake that people make when diagnosing P0452 is to do anything before checking the gas cap. Here’s how a good mechanic would go about diagnosing it. If everything looks fine, they’d move on to checking the EVAP system.Ī failure in the EVAP system itself can cause P0452. If that doesn’t help anything, the tank pressure sensor itself would need to be replaced. If it doesn’t look right, the wiring to the fuel pressure sensor would need to be inspected. Unfortunately, outside of checking the gas cap (which more often than not is the cause), diagnosing P0452 gets tricky.Ī mechanic would use a professional OBDII scanner to check the fuel tank pressure readings from your Cobalt’s fuel tank to see if there is vacuum in the tank. If it does come back, we’ll need to move on to the next step. If it has gunk built up or mud on it, you’ll need to use a wet rag or some WD-40 to clean it off. If you believe that the fuel cap was loose, or you changed it, you’ll need to clear the code with a code scanner and see if it comes back or not.Īlso, make sure that nothing on the fuel inlet would be preventing a good seal. OBDII codes stay in the system for a while, even after the problem has been fixed. If it is dry rotted or damaged, a replacement is likely to fix P0452. Pay attention to the rubber ring that would snug to the fuel inlet. If the gas cap is not tight, or making a good seal, that causes this code (a lot). P0452 indicates that your Cobalt’s fuel tank pressure sensor has detected that the pressure in the fuel tank is too low. If it is not, cross referencing the other code’s causes with the common causes of P0452 can really help you eliminate some possibilities. If P0452 is the only trouble code that you are getting, skip right on down to the next section. Here’s a solid order of diagnosis when dealing with P0452 in your Cobalt: Bad fuel tank pressure sensor or wiring.Here are some of the more common causes of P0452 in the Chevy Cobalt: Smell of fuel (indicates loose fuel cap or EVAP leak).Here are some of the more common symptoms that can arise with this code: More often than not, P0452 is not going to be accompanied by any noticeable symptoms, and your Cobalt will continue to run fine. P0452 is more often than not caused by a bad gas cap P0452 should not be considered a breakdown risk when it is the only code that you are experiencing, and is more often than not remedied by a new fuel cap. When the pressure in the system is too low, P0452 is generated. The evaporative emissions control system (EVAP) sends fuel vapors from the fuel tank to the intake manifold to be burned off. It means that your Cobalt’s EVAP system has detected low fuel tank pressure. Compare the fuel tank capacity on different Chevrolet models and trims.P0452 is a generic OBD II code that can occur in the Chevy Cobalt. On this webpage, you can select the year of production and discover the desired gas tank size. These aspects are also considered by our experts and also displayed on the chart Note that your Chevrolet Cobalt gas tank range varies depending on the car's gas mileage, its mph, and if you're driving in an urban area or on a highway. But what size gas tank does a Chevrolet Cobalt have? And how many miles per gallon does a Chevrolet Cobalt get? The fuel tank capacity is what dictates the rules of your trip.
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