Over time a faulty fuel tank pressure sensor will cause low fuel efficiency, trouble starting the vehicle and/or stalling, and eventually keep the vehicle from starting. Over filling the fuel tank will cause fuel to overflow into the charcoal canister and other overflow lines can cause the sensor to fail.Overexposure to extreme temperatures, weather, vibration, and/or corrosive fuel vapors.If a decrease in MPG is noticed or the vehicle doesn't build up speed when the gas pedal is initially pressed, the fuel tank pressure sensor may be sending the wrong signal to the ECU causing a change in fuel usage and/or air to fuel ratio. Because the fuel tank pressure sensor manages the air to fuel ratio, it may be sending an incorrect signal. If the vehicle is stalling suddenly, the cause may be a faulty fuel tank pressure sensor. If the vehicle is continually hard to start, the fuel tank pressure sensor may be the cause because it has direct input to the air to fuel ratio.
#DODGE SYMPTOMS OF LOW VOLTAGE RAM PRESSURE FUEL CODE#
Code P0452 is triggered by low input from the fuel pressure sensor. The cause could be as simple as a broken seal on the fuel cap but may also signal a leak within the fuel system. Signs of a faulty fuel tank pressure sensor include:īecause there are numerous reasons a “Check Engine” light could come on, always consult an automotive professional. This test result confirms that a lack of fuel is keeping your Dodge Pickups engine from starting. Once the FTP detects a leak in the fuel tank/system, it alerts the ECU to trigger a “Check Engine” light. OK, lets analyze your test result: CASE 1: The engine started and ran for a few seconds. The fuel tank pressure sensor is responsible for detecting leaks in the fuel system, whether it be an evaporative leak or bad seal on the fuel cap. The fuel tank pressure (FTP) sensor is an important part of the evaporative emissions control system that is designed to capture unburnt fuel vapors and reintroduce them back into the fuel system.
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