The P0460 code indicates a problem with the fuel level sensor circuit. While not immediately dangerous, it’s best to diagnose and fix this issue promptly to avoid running out of fuel unexpectedly.
You can usually continue driving carefully with this code present, but don’t rely on the fuel gauge being accurate. Have it checked out by a mechanic as soon as possible to prevent being stranded with an empty tank.
What Does Code p0460 Mean?
Diagnostic trouble code (DTC) P0460 stands for “Fuel Level Sensor “A” Circuit .” The powertrain control module (PCM) stores this code when it detects that the input signal from the fuel level sensor (FLS) does not fall within the expected signal range.
The PCM may also set this code if it determines that the input signal from the fuel level sensor is irrational.
A fuel level sensor is a device typically mounted at the top of the fuel tank or fuel pump module and is used to monitor the fuel level inside a vehicle’s gas tank. The sensor is made of three main components: the float, the resistor, and the actuating rod.
More About p0460 OBD-II Codes
The engine control module (PCM) gets information from the Fuel level Sensor as to how much fuel is present inside the fuel tank. If the PCM detects an incorrect signal from the fuel level sensor, then the P0460 code will be set. The Fuel level Sensor may or may not be a part of the fuel pump.
The amount of fuel present in a vehicle’s tank is informed to the PCM in terms of voltage. A P0460 error code refers to the difference between the fuel level and what it’s being stated to the PCM. A P0460 issue can be due to a malfunctioning fuel level sensor.
A P0460 code will be recorded in the vehicle’s onboard computer if the voltage level received by the PCM from the fuel level gauge doesn’t coincide the original amount of fuel in the tank. A P0460 error code can also be recorded if the input voltage level surpasses the extreme factory level
Potential Causes of a p0460 Code
The potential Causes of a P0460 OBD-II code are as below:
- Faulty fuel level sensor or Fuel pump (most common).
- Damaged or corroded wiring, connectors, or grounds.
- Defective fuel gauge.
- Damaged fuel tank that changes FLS parameters.
- Faulty PCM (rare).
- Mechanical issues with FLS sensing arm.
p061b Code Symptoms
Potential Symptoms of a P0460 OBD-II code are as below:
- Malfunction Indicator Lamp (MIL).
- Illuminated Decrease in perceived fuel economy.
- Decrease in Distance to Empty mileage.
- Incorrect fuel level on the gauge in instrument cluster – always reads wrong.
How to Fix p0460 Code?
Auxiliary fuel tanks are covered in this TSB as well. Gravity feed tanks are not recommended for use on these systems and when refueling Ford trucks.
It is recommended to refuel the main tanks with the ignition switch in the off position. Next, locate your vehicle’s Fuel Level Sensor (FLS).
This sensor is usually found mounted in the fuel tank or possibly even in the top of the fuel tank/fuel pump module. Once located, visually inspect the connector and wiring.
Pull the connector apart and carefully inspect the terminals (the metal parts) inside the connector.
See if they look burned or have a green tint indicating corrosion. Use an electrical contact cleaner and a plastic bristle brush if cleaning of the terminals is needed. Let dry and apply electrical grease where the terminals contact.
If you have a scan tool, clear the diagnostic trouble codes from memory, and see if the P0460 code returns. If it does not, then the connections were most likely your problem.
This is the most common area of concern for this code, as the fuel tank connections have the greatest number of issues with corrosion. If the P0460 code does return, we will need to test the FLS sensor and its associated circuits.
With the Key Off, disconnect the electrical connector at the FLS sensor. Connect a Digital Voltmeter (DVOM) black lead to the ground or low reference terminal at the FLS sensor wiring harness connector.
Connect the red lead of the Digital Voltmeter to the signal terminal at the FLS sensor wiring harness connector. Turn Key On Engine Off.
Check manufacturer’s specifications; voltmeter should read either 12 volts or 5 volts. If the voltage is incorrect, repair the power or ground wire, or replace the PCM.
If the prior test passed, connect one lead of an ohmmeter to the signal terminal at the sensor and the other lead to the ground or low reference terminal at the sensor.
The ohm meter reading should not be zero ohms nor should it be infinite. Check manufacturers specifications on the resistance of the sensor to accurately test the resistance to fuel level (1/2 tank of fuel might read 80 ohms). If the ohmmeter readings do not pass, replace the FLS.
How Much Does It Cost to Fix a p0460 Code?
Repair costs for a P0460 code vary widely depending on the root cause:
- Fuel level sensor: $125-$400 USD / €105-€340 EUR
- Wiring repairs: $50-$200 USD / €40-€170 EUR
- Fuel gauge: $200-$600 USD / €170-€510 EUR
- Fuel tank: $400-$1500 USD / €340-€1275 EUR
- PCM: $500-$1000 USD / €425-€850 EUR
Labor is usually 1-2 hours at $75-$150 USD ($110-€220 EUR) per hour.