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Keeps blowing sensor one fuse and codes P0051, P0463 and P0464

Tiny
BIG'UN
  • MEMBER
  • 2008 HYUNDAI SANTA FE
  • 3.3L
  • V6
  • 2WD
  • AUTOMATIC
  • 250,000 MILES
Keeps blowing sensor one fuse. It's throwing codes p0051, p0463, p0464. Some are saying could be fuel pump trying to get confirmation. And some way to confirm.
Sunday, June 16th, 2019 AT 2:02 PM

11 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon,

What is the fuse number that fails?

https://www.2carpros.com/articles/how-a-car-fuse-works

Fuel pumps do not need any confirmation at all.

The 51 code is for a wiring issue with the O2 sensor wiring.

https://www.2carpros.com/articles/how-to-check-wiring

The 463 and 464 are for the sender unit in the fuel tank.

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Sunday, June 16th, 2019 AT 2:23 PM
Tiny
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Is fuse number 25 under the hood It's a 10 amp fuse. Reasoning behind the Fuel pump is Wore out and pulling too much app. The fuse blows as soon as you turn the switch on. Put a bigger amp fuse in it will run a little while before it blows.
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Sunday, June 16th, 2019 AT 2:35 PM
Tiny
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Never, never, ever install a bigger fuse. Due to the current draw, you may have done more damaged the wiring for the circuit and have complicated the issue.

Is this the fuse that fails?

Roy
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Sunday, June 16th, 2019 AT 2:46 PM
Tiny
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Sensor one at the bottom of this list is the one that keeps blowing.
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Sunday, June 16th, 2019 AT 2:51 PM
Tiny
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Okay, the wiring needs to be checked from the sensor back.

The fuel pump fuse has no connection to the sender circuit.

Roy
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Sunday, June 16th, 2019 AT 2:54 PM
Tiny
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Even though it says fuel pump relay?
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Sunday, June 16th, 2019 AT 2:55 PM
Tiny
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What says the fuel pump relay?

Roy
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Sunday, June 16th, 2019 AT 2:57 PM
Tiny
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The fuse it keeps blowing.
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Sunday, June 16th, 2019 AT 2:57 PM
Tiny
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Okay, that would account for the pump but not the sender. The 463,464 codes are for the sender which works on a separate circuit than the pump.

Roy
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Sunday, June 16th, 2019 AT 3:01 PM
Tiny
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The fuel gauge has not worked in a long time. This problem started last week. And of course you cannot drive it. The codes may not even be associated with that. What is your opinion? So 63 and 64 the sender is for the fuel gauge. That's what my research shows.
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Sunday, June 16th, 2019 AT 3:11 PM
Tiny
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That's what I stated two times.

You have a harness issue that needs to be traced.

Roy
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Sunday, June 16th, 2019 AT 3:21 PM

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