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  • The P0462 code stands for “Fuel Level Sensor “A” Circuit Low.” It’s triggered when the PCM detects an irrational input signal from the fuel level sensor (FLS).
  • Possible causes for this code include fuel pump malfunction, a failing fuel level sensor, and wiring issues.
  • Common symptoms to watch out for include an illuminated check engine light, inaccurate fuel gauge readings, and diminished perceived fuel economy.

The powertrain control module (PCM) stores the trouble code P0462 when it detects a possible issue with the fuel level sensor circuit. Find out this code’s definition, symptoms, and causes with this brief guide.

What Does the P0462 Code Mean?

Diagnostic trouble code (DTC) P0462 stands for “Fuel Level Sensor “A” Circuit Low .” The PCM stores this code when it detects an irrational input signal from the fuel level sensor (FLS). The PCM may also set this code when it determines that the input signal from the fuel level sensor does not match the expected values.

Direct Fit Fuel Level Sensor
A fuel level sensor is used to monitor the fuel level inside the fuel tank.

A fuel level sensor is used to monitor the fuel level inside the fuel tank. This component is typically mounted at the top of the fuel tank or the fuel pump module.

Again, the fuel level sensor is made of three major components. The first component is an oval-shaped ball made of foam or metal called a float. The float bobs up and down depending on the level of fuel inside the tank. The float connects to the resistor via a thin metal strip called an actuating rod. When the float drops according to the fuel level, this rod moves a wiper-like attachment across the resistive material on the resistor. This movement changes the amount of current flowing to the fuel gauge, which in turn changes the fuel level reading.

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In some vehicles, the fuel level sensor sends fuel level data to a combination meter that transmits the signal to the PCM via a data network. The PCM then uses the fuel level sensor input to determine how much fuel is in the fuel tank and to monitor fuel economy as well.

You can read our technical discussion about how fuel level sensors work if you’re researching how to fix P0462 yourself.

Note: The definition of code P0462 may be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.

What Are the Possible Causes of the P0462 Code?

There are several possible issues that can trigger trouble codes.  Listed below are some of the possible reasons why the P0462 code sets:

  • Fuel pump malfunction (the sensor is often integrated into the pump)
  • Fuel level sensor failure
  • Wiring issues, such as short to ground in the signal circuit to the FLS sensor
  • PCM malfunction (rare)

What are the Common Symptoms of the P0462 Code?

While many trouble codes only exhibit an active malfunction indicator light, the P0462 code may manifest other symptoms. Below are some of the most common symptoms of P0462:

How to Diagnose the P0462 Code

obd II code P0462
Misdiagnosis is a possibility that should be avoided because costly mistakes and personal injury may happen as a result.

Trouble code diagnosis is a time-consuming task that demands thoroughness and accuracy. The P0462 code has several possible causes, and you need to narrow down the root cause in order to find an effective solution. Misdiagnosis is a possibility that should be avoided because costly mistakes and personal injury may happen as a result.

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This is why it’s very important to obtain a reliable source of repair information. If you’re planning to troubleshoot P0462 yourself or if you want to understand the issue better, you should consult a vehicle-specific repair manual or database. Repair manuals and databases have detailed repair instructions, illustrations, and diagrams that make P0462 diagnosis a more manageable job.

How to Fix the P0462 Code

The fact that vehicles are built differently depending on the manufacturer makes trouble code diagnosis and repair a bit more challenging. Components, definitions, setting conditions, and possible causes differ by make. This means that there is no universal fix to a trouble code like P0462.

For example, the possible causes listed for the P0462 on 2012 Mazda 3 S vehicles include fuel gauge and instrument cluster failure. Meanwhile, the list of likely causes for the P0462 on 2012 Nissan Frontier SL units include harness or connector failure in the CAN communication line or the sensor circuit.

Fuel Gauge and Instrument Cluster Isolated
The possible causes listed for the P0462 on 2012 Mazda 3 S vehicles include fuel gauge and instrument cluster failure.

If you’re a seasoned DIYer, vehicle-specific repair manuals and databases may ease the P0462 code troubleshooting process. With a repair manual, you’ll be able to find specific repair procedures to address the P0462 on your Ford vehicle, for example. However, if you’re not familiar with trouble code repairs, it’s best to consult a mechanic or technician to avoid personal injury and damage to your vehicle.

Other Notes About P0462

Typically, the P0462 code is not treated as severe. However, this level of seriousness still depends on the exact root cause of the issue. In any case, it’s important to address trouble codes immediately to prevent worse damage or more expensive repairs down the line.

Some related trouble codes to the P0462 include:

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Where to Get a New Fuel Level Sensor for Your Vehicle

If a bad fuel level sensor triggers the P0462 code on your vehicle, you’ll have to replace it to clear the code. Good thing you won’t have to go from one auto shop to another just to find a top-notch fuel level sensor for your ride.

Here at, you can find an affordable fuel level sensor replacement with just a few clicks. Enter your ride’s exact details into our built-in vehicle selector, and choose from our selection of sensors fit for your ride. Worried about quality? Our fuel level sensors all passed stringent quality control tests, so you can be sure they’re on par with your factory fuel level sensors in terms of quality and functionality.

All our replacement parts come with a low-price guarantee, so you won’t have to break the bank just to clear an error code. Order now, and expect your replacement part to arrive straight to your doorsteps in as fast as two business days. Got some questions about your order? We have a 24/7 customer service team to help you sort things out.

Shopping for replacement parts has never been this easy. Check out our fuel level sensors now and order today!

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About The Authors
Written By Automotive and Tech Writers

The Research Team is composed of experienced automotive and tech writers working with (ASE)-certified automobile technicians and automotive journalists to bring up-to-date, helpful information to car owners in the US. Guided by's thorough editorial process, our team strives to produce guides and resources DIYers and casual car owners can trust.

Reviewed By Technical Reviewer at

Richard McCuistian has worked for nearly 50 years in the automotive field as a professional technician, an instructor, and a freelance automotive writer for Motor Age, ACtion magazine, Power Stroke Registry, and others. Richard is ASE certified for more than 30 years in 10 categories, including L1 Advanced Engine Performance and Light Vehicle Diesel.

Any information provided on this Website is for informational purposes only and is not intended to replace consultation with a professional mechanic. The accuracy and timeliness of the information may change from the time of publication.

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Eugene R Semenza

OK so far. Let’s see if the part fits an 05 ford focus fuel pump module. Then we will see how long it lasts before corrosion sets in.

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