P0462 OBD-II Trouble Code: Fuel level Sensor Circuit Low Input

Our certified mechanics come to you · Get a fair and transparent estimate upfront

Red-stars EXCELLENT RATING ON

Cost of diagnosing the P0462 code

P0462 is a diagnostic trouble code (DTC) for "Fuel level Sensor Circuit Low Input". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$20.00
Toyota$20.00
BMW$20.00
SCHEDULE P0462 DIAGNOSTIC Get a fair and transparent estimate upfront

Diagnostic Trouble Code (DTC): P0462

P0462 code definition

When a vehicle’s PCM (Powertrain Control Module) logs a P0462 trouble code, it’s because its fuel level sensor is no longer taking correct readings.

What the P0462 code means

The way a vehicle consumes fuel in order to make the engine work is far more complicated than most people assume. One integral element in the process is a fuel level sensor. As the name suggests, this sensor is responsible for measuring how much fuel is in the tank.

It is made up of three separate components: a resistor, actuating rod, and a float. That last element rests on top of the fuel. It is attached to an actuating rod which is thin and made out of metal and pivoted at some point. This piece is attached to the resistor. A resistor is supplied with 12 volts of power from the vehicle’s battery and a wire runs from it to the fuel gauge so it can report on the level.

Obviously, it’s vital that you always know how much fuel you have. However, the PCM also needs to know this information so it can adjust the vehicle’s performance accordingly.

If P0462 is logged by the PCM, it’s because the sensor is sending voltage readings that are too low to be accurate.

What causes the P0462 code?

Despite how simple this fuel-measuring tool is, there could be a number of reasons behind it sending readings of insufficient voltage. These are:

  • A faulty instrument cluster
  • The fuel level sensor has suffered an opening
  • The fuel tank has been damaged
  • The ground circuit is open
  • The ground path is rusty which is causing high resistance
  • The signal circuit to the fuel sender is shorted to the battery voltage or completely open
  • The BCM, fuel pump computer module or even the PCM are faulty

Admittedly, this last cause is extremely rare, but if nothing else makes sense, it’s worth investigating.

What are the symptoms of the P0462 code?

There are really only two symptoms you should expect with respect to P0462:

Basically, if the fuel level sensor can’t do its job, you shouldn’t expect accurate readings about how much gas you have left in your tank.

How does a mechanic diagnose the P0462 code?

This is actually a fairly simple problem to diagnose. These are the steps involved:

  • A mechanic will use their OBD-II scanner to find out which codes have been logged by the vehicle’s PCM.
  • They will inspect the tank from the outside to see if there are any signs of damage that could be leading to the poor readings.
  • Given that this is a voltage problem, though, no matter what they find, they will inspect the circuitry related to the fuel level sensor that is responsible for sending readings to the PCM.
  • Finally, if all else fails, the sensor itself will be examined.

Common mistakes when diagnosing the P0462 code

As we just touched on, one common mistake is only addressing a single issue and leaving others. For example, the tank may be damaged and that may be causing a bad reading, but code P0462 means something is wrong with the voltage. Therefore, the tank’s problems should be fixed, but a mechanic needs to continue inspecting.

How serious is the P0462 code?

Code P0462 doesn’t represent a threat to anyone’s safety, but it could end with you on the side of the road because you ran out of gas. Until you resolve this problem, you’ll have no idea of how much longer you have before your tank is on empty.

What repairs can fix the P0462 code?

Repairs for this code would include:

Additional comments for consideration regarding the P0462 code

Given how easy it should be to fix this problem – and how affordable those repairs are – there is no reason to risk your vehicle running out of gas.

Need help with a P0462 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

gasoline
trouble codes
fuel
Check Engine Light

No more waiting rooms! Our mechanics will come to you to diagnose and fix the P0462 code.

SCHEDULE P0462 DIAGNOSTIC
Get a $20 credit for the follow-up repair

Recent Check Engine Light is on Inspection reviews

Excellent Rating


YourMechanic Check Engine Light is on Inspection Service

Average Rating

4.8/5

Number of Reviews

5,064

Rating Summary
4,665
194
48
27
130
4,665
194
48
27
130

Mario

8 years of experience
22 reviews
Mario
8 years of experience
Chrysler PT Cruiser - Check Engine Light is on - Los Angeles, California
He was very courteous and knowledgeable. You can tell he knows his trade. Satisfied with his service.

Yoel

8 years of experience
91 reviews
Yoel
8 years of experience
Nissan Versa Note - Check Engine Light is on - Upper Darby, Pennsylvania
Yoel is very competent and provides great customer service. He took the time to explain and show me exactly what was going with my car. I will definitely use him again and recommend him to others.

Jason

31 years of experience
148 reviews
Jason
31 years of experience
Ford Explorer - Check Engine Light is on - Phoenix, Arizona
Jason was on time, friendly, explained everything he was doing and let me know the other services available, so when Jason comes back to install the new part I am having the oil changed too.

DeVaughn

25 years of experience
1 reviews
DeVaughn
25 years of experience
BMW X3 - Check Engine Light is on - Moreno Valley, California
The mechanic arrived on time, completed the work, which was replacement of an oxygen sensor, in a timely and professional manner.


More related articles

Related questions

Periodically vehicle runs rough at idle.

Hi there. Most of the codes that are coming on are for a misfire on cylinder number 3. Check the spark plug and wire on cylinder 3 and see if you are getting a good spark. Then check the fuel...

P0174, P1004 codes

Hello. From what you describe it would appear that your vehicle is experiencing some sort of fuel or engine performance issues. Code P0174 is for an lean condition in engine bank 2. This can be caused by many things, however...

I have a 2012 Dodge Charger R/T AWD and I have check engine light issues

Hello, thank you for writing in. The long list of potential issues that cause hard-starts and misfires is profound. Without knowing exactly what diagnostic codes the dealership was pulling from the check engine light, it is impossible to narrow down...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1-800-701-6230 · hi@yourmechanic.com