Skip the auto shop - Our mechanics make house calls

Q: Check engine light on getting code P0462

asked by on

Hello I bought a car with the check engine light on guy said it was O2 sensor. At first I got code P1448 and P0455 I fixed the evap leak those codes went away but before the mechanic did a smoke test to find out where the leak was coming from he did another dianogitic test and got code P0462. I never got that code until he did the test once I fixed the evap leak problem codes P1448 and P0455 went away he reset the system and took the light off. That same day I went to get gas and when I filled my tank up the light came back on my fuel level works fine to me it lets me know when I am low on gas and when my tank is fuel. I was told to replace the pump when the guy did a data test car on and fuel pump plugged up the number goes to 508voltz unplugged it's 0voltz when I plug my scanner up it says fuel level sensor a circuit low can you tell me what that means? Could i just replace the pump and the light goes off. I replaced gas cap already. I need to pass emissions. Please help

My car has 174000 miles.

Replacing the pump will probably take care of this.The fuel pump on your car is one of those integral in-tank units that has several functions including the fuel level sensor and the fuel tank pressure sensor. The fuel level sensor does more than just operate you gas gauge,the reason the sensor is important to the engine management system is because the car runs an active test on the evap system when the fuel is at a certain level. If you continue to drive with this code, you may get a few other codes because the evap test cannot run. The code is stored because the computer has seen a low voltage on the circuit. It doesn’t necessarily mean it sees that voltage right now. These self diagnostic systems can be mysterious and frustrate even the most experienced technician so you’re not alone if you don’t think it is making sense. If you want a second opinion, you can contact Your Mechanic to have a technician come to your home or office and check out your car or even replace your fuel pump for you.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Check engine light on getting code P0462

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: I have 2006 nissan altima 2.5 that keeps on burning my stater

Hi there. There are a few reasons as to why the starter will fail prematurely on your car. Most of the time it is caused by a failing crankshaft position sensor. When the sensor fails and reads incorrectly it can...

Q: Engine stumbled, reduced power/speed, & warning light on

Hi there. This can be a coil or a number of other things. Since the check engine light came on the computer needs to be scanned for codes. I typically scan it first to see what is going on. From...

Q: Door lock switch won't work.

Hello, thank you for writing in. The issue is likely a result of a failing door lock switch, or the connection to it. The best place to start is to have the switch tested. You can do this by checking...

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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...