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

Our certified mechanics come to you · 12-month, 12,000-mile warranty

SCHEDULE P0462 DIAGNOSTIC 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 for $70.00. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $30.00 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$70.00$30.00
Toyota$70.00$30.00
BMW$70.00$30.00
SCHEDULE P0462 DIAGNOSTIC Get a fair and transparent estimate upfront

Check Engine Light

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
Check Engine Light
fuel

Fast and easy Check Engine Light is on Inspection service at your home or office.

SCHEDULE P0462 DIAGNOSTIC
Get a fair and transparent estimate upfront

Recent Check Engine Light is on Inspection reviews

Excellent Rating


YourMechanic Check Engine Light is on Inspection Service

Average Rating

4.5/5

Number of Reviews

3,203

Rating Summary
2,919
140
39
22
83
2,919
140
39
22
83

Nathan

26 years of experience
198 reviews
Nathan
26 years of experience
Nathan was knowledgeable about my car and very educational as well. He explained everything he was doing and why. I admire his attention to detail. He really showed genuine interest and attentiveness to the problem. He’s a great conversationalist and was easy to work with.
2013 CHEVROLET CRUZE - CHECK ENGINE LIGHT IS ON - GLENPOOL, OKLAHOMA

Mack

19 years of experience
72 reviews
Mack
19 years of experience
Very nice and knew what he was doing. Got what I needed done even though was told wrong by the office.
1999 FORD F-150 - CHECK ENGINE LIGHT IS ON - MIDLOTHIAN, TEXAS

Scott

31 years of experience
24 reviews
Scott
31 years of experience
Very nice friendly mechanic. Very helpful with with questions that I had. Offered good advice. He explained some of the problems to me and what should be the next to resolve it before spending unnecessary monies. This was my first time using him and will not be my last. I would recommend him to anyone. Especially women because he does not seem to take advantage of our knowledge of not knowing things about cars.
2001 HYUNDAI ELANTRA - CHECK ENGINE LIGHT IS ON - PARKVILLE, MARYLAND

Tyrone

6 years of experience
61 reviews
Tyrone
6 years of experience
He showed up on time and got my diagnostic done quickly. He also gave me honest recommendations on what I need to do for my car.
2008 HONDA ACCORD - CHECK ENGINE LIGHT IS ON - CULVER CITY, CALIFORNIA

More related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
Veteran and Military Driver Laws and Benefits in New Mexico
The state of New Mexico offers a number of benefits and perks for those Americans who have either served in an Armed Forces branch...
P2159 OBD-II Trouble Code: Vehicle Speed Sensor B Range/Performance
Diagnostic Trouble Code (DTC): P2159 P2159 code definition Vehicle Speed Sensor B Range/Performance...

Related questions

Q: Mustang has been sitting for a few years.

I recommend flushing out your fuel system with fresh gasoline and a container of methyl-hydrate. Old gas will not harden in a fuel tank unless it is more than 20 years old. You will need to remove the fuel line...

Q: Oil leak and Check Engine Light is on

Hi there. Thanks for writing in. In some cases, the oil leaking from the vehicle after a rear main seal and oil cooler are repaired is caused by residual oil that was not cleaned or removed from the vehicle after...

Q: Flashing green light next to "D" and check engine light on.

For this particular issue, I would start by checking the continuity of the cruise control switch buttons. You will need to check these with a volt meter to determine if they are getting power. If you need assistance with getting...

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