Although the basic operating principle remains the same on these systems, i. This information can be useful should an intermittent fault be diagnosed later on. I'm not sure where and whether you'l be able to buy this part separately, but it surely doesn't warrant a fuel pump replacement. Use the information in this video at your own risk. If this sensor is indeed working on your vehicle, then check the fuel gauge itself. The Fuel Level Sensor has a signal circuit and a ground circuit. Need help with a P0460 code? While an aftermarket sender unit may fit the application, it often happens that the resistance rating of an aftermarket unit does not match the specifications of the application it is fitted to, which could result in inaccurate fuel level readings, or even fuel level readings that could indicate the tank is full when it is in fact empty.
Step 2 Consult the manual on the location, function, color-coding, and routing of all wiring and fuses associated with the fuel sender unit, and perform a thorough visual inspection of all wiring. Step 2 Consult the manual on the location, function, color-coding, and routing of all wiring and fuses associated with the fuel sender unit, and perform a thorough visual inspection of all wiring. My question is, can you buy a Fuel Level Sensor? Is there a site that one could go to to find out what the probable causes to repair these codes are? How serious is the P0460 code? Vehicles equipped with a low fuel blinker feature may also suffer from erratic low fuel warnings in the event of a P0460. Trying to diagnose this code with a low or too high fuel level can lead to misdiagnoses and hours of wasted time. This information can be useful should an intermittent fault be diagnosed later on.
As the fuel level changes, the movable arm either rises or drops, which brings the contact point of the arm into contact with different parts of the variable resistor. Look up the other , please use the search box. Thus, the problem with the tank must be fixed, but technicians must continue his diagnosis to look for other causes. Note that not all applications will set the code if damage to the fuel tank occurs. Refer to in Wiring Systems. How do you troubleshoot code P0462? Step 4 If the code persists despite all electrical values falling within specifications, test the sender unit itself by unplugging it from the system where it connects to the wiring harness.
Always adhere and follow safe practices when working on vehicles. What are the common causes of code P0462? A P0460 blames this issue on a malfunctioning fuel level sensor. Note however that on some applications the needle may move rather slowly, so allow enough time for the needle to reach its point of maximum deflection before drawing any conclusions from this test. Any damage to the movable arm, for instance, barely noticeable bending or deformation of the arm could cause wildly inaccurate fuel level readings. The image below shows the typical construction of a fuel pump canister.
Fuel Level Sensor Testing and Replacement: Carsntoys. A P0460 can also be logged if the voltage input level exceeds the maximum factory level. All that will happen in this case is that the fuel gauge reading will not reflect changes in the actual fuel level in the tank. What causes the P0460 code? Lastly, technicians will test the sensor itself. Does the scan tool indicate that this test ran and passed? Technicians will also check the tank from the outside and look for signs of damage that could be leading to poor readings. Most new applications are fitted with magnetic fuel gauges that depend on a varying magnetic field to deflect the indicating needle.
Also be aware that the fast response time seen on a magnetic fuel gauge is a function of its design, and it does not indicate a short circuit as it sometimes would on a purely resistance-type gauge. No guarantee or warranty is implied. Refer to in Wiring Systems. Is the Fuel Level sensor above the specified value? Compare all obtained readings to those stated in the manual, but pay particular attention to the ground wire s and connection s , since the sender unit relies on a sound ground to work at all. If the electrical circuits are sound, the sensor components should be checked for faults or damage. Fuel Level Sensor Circuit P0462. What are the common causes of code P0463? However, poor connections often result in high resistances in some parts of the circuit, which is why it is important to perform resistance and continuity checks during the diagnostic procedure.
I would check to see if your alternator is over or under charging, if it's ok then I would say yes that all these sensors will probably need to be replaced but not without actual technical diagnosis. I've had it to 3 different mechanics and no one can figure out what's going on. Note that this is a rare event, and the fault must be sought elsewhere before any controller is replaced. What are the symptoms of the P0460 code? Although the basic operating principle remains the same on these systems, i. The one thing I noticed that all these systems did have in common was voltage, they all had either Low Input or High Input.
The difference between the two voltage drop tests should not be greater than about 100 millivolts. Also be aware that the fast response time seen on a magnetic fuel gauge is a function of its design, and it does not indicate a short circuit as it sometimes would on a purely resistance-type gauge. As the fuel level changes, the float moves the arm, changing the resistance to ground which varies the voltage signal. Control unit software needs updating 5. Be aware though that replacing the fuel level sender unit is more difficult on some applications than on others- in some cases, special tools may be required to remove the locking ring that secures the fuel pump canister.