P0464 - OBD Trouble Code

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Do you know - An irregular flow of current to the fuel level sensor can cause error P0464. Go ahead to know more about P0464. The quantity of fuel present in the fuel tanks is conveyed by the fuel level sensor to the engine control module (PCM). When there is an irregular signal from the fuel level sensor, the PCM detects it and sets the P0464 code. The fuel level sensor may actually be a part of the fuel pump.

The fuel level sensor informs the Powertrain Computer module as to how much quantity of fuel is available in the fuel tank. To perform this, it uses a float on a lever which is connected to an electronic device called potentiometer. The movement or location of a lever can be translated into a voltage signal by the potentiometer so that the computer can understand. For instance, the potentiometer is used by the throttle pedal or the operation of a gas by the driver when it is opened or closed. The error code P0464 signifies that the signal of the voltage is increasingly high from the fuel level sensor and further indicates that there is more fuel available in the tank than the tank can actually withstand.

What causes this problem with the Fuel Level Sensor Circuit Intermittent?

• There is a possible chance of broken opening in the signal circuit to the FLS sensor
• There is a possible chance of irregular short to voltage in the signal circuit to the FLS sensor
• There is an irregular short to voltage between the signal circuit and FLS sensor
• Chances of a failed FLS sensor / mechanically stuck sensing arm
• Probable chances of PCM failure

1. Fuel Level Sensor - If your fuel level sensor leaky? Then you have to consider replacing them before they cause further troubles.
2. Fuel Tank - Restoring or changing your faulty fuel tank is one of the best ways to get rid of the P0643 error code.
3. Fuel Pump - A damaged fuel pump can cause trouble in your engine system. Get them replaced with the right parts from Parts Avatar.
4. Fuel Level Gauge - Any leaks or blockages can be reason for faulty fuel level gauge Check for leaks and repair them instantly.
5. Fuel Level Sensor Harness - Your engine system can fail if there are any faults in your fuel level sensor harness. Repair or replace them as desired.
6. Powertrain Control Module - Substituting your faulty powertrain control module with a new one from Parts Avatar can prevent OBD- II error.

Have you ever wondered why it is so important to know the symptoms of the problem? Well, it is extremely essential to know the symptoms of the problem in order to detect it. Keeping this in mind, let’s throw some light on few common symptoms of OBD error code P0464.

Common Symptoms

• Malfunction Indicator lamp that is too bright
• A decrease in the expected fuel economy.
• Short distance to empty mileage.
• Wrong readings on the gauge in instrument cluster which indicates incorrect fuel.

Fixing problems with your car is not as easy as it might seem. You need to be extremely careful and follow certain steps.

• Replacement of the fuel tank or repairing them
• Changing the fuel level sensor float or repairing them
• Fuel level sensor replacement or repairmen
• Replacement of wire joints in the fuel level sensor
• Strengthen the loose connections in the fuel level sensor circuit

There is no need to get strained if your OBD Code is still flashing up as we are here at your service. Have a look at our superior variety of Fuel Level Sensor, fuel tank, fuel pump, fuel level gauge, Fuel Level Sensor harness, Powertrain Control Module, and many more. Now all your problems would vanish within no time.

If you want to easily diagnose this fault code, then all you have to do is to follow the steps which are mentioned below:

• It is always a good idea to start searching for the Technical service bulletin (TSB) for your specific vehicle. Before you go a long way down the wrong path, it’s good to check for this issue with the help of a PCM flash / reprogram which the vehicle manufacturer may have.
• Your next step is locating the Fuel level Sensor on your vehicle. The sensor is actually placed on the top of fuel tank or the fuel pump module. Once you find the sensor, check the connections and wiring. Look if there are any burnt spots, molten plastic, scraps, bare wires, etc. Pull the joint connections apart and check the terminals present inside the connector. Check if they are either burnt or have a green tint as it indicates corrosion. You may require a plastic brush that is bristle or an electric contact cleaner to clean the terminals. Allow them to try and then apply electrical grease where the terminals meet.
• Check if the P0464 codes returns by clearing the diagnostic trouble codes with the help of a scan tool from the memory. Connections can be the main problem if your code does not return.
• This is one of the common areas of concern for this error, as the connections of the fuel tank has the largest number of corrosion issues.
• You will have to check the FLS sensor and its connected circuits if the P0464 code returns. Turn the key off and separate the electrical connector from the FLS sensor. Now connect a digital voltmeter (DVOM) (connect the black lead wire to the low reference terminal or ground at the FLS sensor wiring joint connector. Now turn the key on and switch off the engine. Check for the specifications by the manufacturer. The voltmeter should have a reading of either 5 volts or 12 volts. Shake the connections to see if there are any changes. If there is an incorrect value of voltage, then you have to repair the power, PCM or the ground wire.
• If you pass the previous test, then connect one lead wire of ohmmeter to the terminal of signal at the FLS sensor and the other end of the sensor to the ground or low reference terminal. The reading of the ohmmeter should neither be zero nor infinite. Check the specification by the manufacturer for the resistance of sensor as you can test the exact resistance of the fuel level (80 ohms will equal to ½ tank). Shake the connector at the fuel level sensor as you monitor the resistance. Try replacing the FLS, if the readings of the ohmmeter do not pass.
• If you still continue to get a P0464 error, then it can mainly be due to a faulty sensor. And do not miss the damaged PCM unless and until you replace the FLS sensor. Get guidance from any automotive diagnostician who is trained if you are unsure. You have to program or calibrate the PCM to the vehicle so that it is installed properly.

Common Mistakes When Diagnosing the P0464 Code

• Faulty fuel pump
• Fault in the Powertrain Control module
• Problem with wire connections