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-   -   P0462 - Fuel Level Sensor (https://www.ft86club.com/forums/showthread.php?t=92206)

TurboBRZ 07-24-2015 05:18 PM

P0462 - Fuel Level Sensor
 
I've seen another post on here, but what happened with my car is slightly different.

Car arrived with no check engine lights. I fixed it and drove it up for inspection, and on the way home (after about 40 miles of driving) the check engine light comes on. "Strange" I think to myself... Not sure what have suddenly happened on a car with only 14k miles.

Rather than checking the code immediately with the Techstream I held off for a day. Today my fuel indicator said "low" so I went to fill up. Right after filling up I noticed my fuel indicator still said I was low and the yellow light was on... "Strange" I thought again.

When I brought it home the code was a P0462 - Fuel Level Sensor A. This is a completely stock car and I haven't touched the fuel system. From my other Subaru I also know that there are two fuel level sensors in the car, one on the right side of the tank and one on the left side with the pump...

It seems strange to me that before the fillup the fuel level was displaying properly, and afterwards (same 93 octane as usual) it did not... I'm going to start by checking fuses as it seems really strange to have the gauge stop working with 2 level sensors. Anyone else had this problem or know what the cause is?

steve99 07-24-2015 06:44 PM

Quote:

Originally Posted by TurboBRZ (Post 2333880)
I've seen another post on here, but what happened with my car is slightly different.

Car arrived with no check engine lights. I fixed it and drove it up for inspection, and on the way home (after about 40 miles of driving) the check engine light comes on. "Strange" I think to myself... Not sure what have suddenly happened on a car with only 14k miles.

Rather than checking the code immediately with the Techstream I held off for a day. Today my fuel indicator said "low" so I went to fill up. Right after filling up I noticed my fuel indicator still said I was low and the yellow light was on... "Strange" I thought again.

When I brought it home the code was a P0462 - Fuel Level Sensor A. This is a completely stock car and I haven't touched the fuel system. From my other Subaru I also know that there are two fuel level sensors in the car, one on the right side of the tank and one on the left side with the pump...

It seems strange to me that before the fillup the fuel level was displaying properly, and afterwards (same 93 octane as usual) it did not... I'm going to start by checking fuses as it seems really strange to have the gauge stop working with 2 level sensors. Anyone else had this problem or know what the cause is?

seems reasnobly common fault on various subaru models

are you sure their are two sensors and not jist two fuel pickups

if it new and unmodified just get dealer to replace fuel sender in tank

http://www.google.com.au/#q=subaru+P0462+fuel

TurboBRZ 07-24-2015 07:58 PM

Quote:

Originally Posted by steve99 (Post 2333978)
seems reasnobly common fault on various subaru models

are you sure their are two sensors and not jist two fuel pickups

if it new and unmodified just get dealer to replace fuel sender in tank

http://www.google.com.au/#q=subaru+P0462+fuel


When I replaced my fuel pump in my other BRZ I didn't check which side of the tank it was supposed to be in, I just saw the standard fuel pump housing on the passenger side and said "that must be it". So I opened it only to find a fuel sending unit with a filter attached to it and a hose from the filter that ran to the other side of the tank.

On the other side of the tank is another fuel pump housing (this one with a fuel line coming from it - duh) and in there is another sending unit. Thus why the code said it corresponded to sending unit A, otherwise if there were only 1 sending unit I don't see why they would need to distinguish it as "A". You only do this if there is also a B or a C to go with it.

And according to my local dealer, if the car has a rebuilt title the warranty is void. I'm not sure where it says this in their actual policies, but that's what I have been told despite the fact that it's a perfectly good car and the accident had nothing to do with this...

TurboBRZ 07-25-2015 11:45 AM

By the way - today the fuel level gauge started working again... No idea why as I haven't even looked into it yet, but it did. Check engine light is still on but should clear out after 2 more times of running the car.

jeffchap 07-25-2015 12:13 PM

I got that code a couple of weeks ago. Filled up and reset it and it hasn't happened again.

Tt3Sheppard 07-26-2015 01:06 PM

I've had this code a few times, once it actually pulled up a check engine, slip light, and abs light.

caffeinejunky 07-26-2015 01:20 PM

I've had this on my BRZ, It is actually one of the sensors that are faulty. I'd fill up all the way and it'd read 3/4 full or sometimes still empty. All I had on the car were boltons. Took it into my dealership with the CEL still on and they fixed it under warranty. Just take it in, say you have a CEL and your fuel gauge is inaccurate.

Shaun Perry 08-24-2015 02:33 PM

Any updates on this?

I have had the P0462 come on 4 times now.

I have gotten it with a CEL, and also with just the ABS and Traction Lights.

I have not changed any fuel components, and also checked with my tuner that it isn't anything in the tune.

My fuel gauge is and has been working accurately, unlike some of the symptoms I read up further from other owners.

Any of you have to actually take action to get it fixed, or did the code just work itself out?

TurboBRZ 08-25-2015 02:06 PM

I bought a new sensor.

Shaun Perry 08-25-2015 02:14 PM

Quote:

Originally Posted by TurboBRZ (Post 2369139)
I bought a new sensor.


And the problem was resolved 100%

Can you share which part you bought and from where?

Been looking online and I've only come across entire fuel assemblies or a various list of parts I wanna be sure Im looking at the correct one if it ends up I need to replace mine as well.

Tt3Sheppard 08-25-2015 02:22 PM

I haven't seen mine come back since my last post in this thread. Currently using E85.

unlimited86 04-07-2016 02:50 AM

Anyone know the reason to this code?. Decided to tune the car to run e85 today, drove 30 mins, turn it off, got back in car to start it up and saw the code, cleared it with the OFT and drive for about 10 mins on the freeway and all the lights on the dashboard turn off and back on with traction, abs and seatbelt light on. During that time I had the OFT on my lap and it also flickered and shut off and on, I quickly unplugged it after. I was wondering was it the loose wire to the oft that caused all the lights to turn on or was it the code?

FRSBRZGT86FAN 04-07-2016 03:19 AM

Quote:

Originally Posted by unlimited86 (Post 2613248)
Anyone know the reason to this code?. Decided to tune the car to run e85 today, drove 30 mins, turn it off, got back in car to start it up and saw the code, cleared it with the OFT and drive for about 10 mins on the freeway and all the lights on the dashboard turn off and back on with traction, abs and seatbelt light on. During that time I had the OFT on my lap and it also flickered and shut off and on, I quickly unplugged it after. I was wondering was it the loose wire to the oft that caused all the lights to turn on or was it the code?


The flickering of the OFT was most definitely caused by engine power/ignition to the car being cut. I'm not sure what the best course of action is now or whether or not you can take it to a dealer with a partially full tank of e85.

unlimited86 04-07-2016 04:42 AM

Quote:

Originally Posted by FRSBRZGT86FAN (Post 2613257)
The flickering of the OFT was most definitely caused by engine power/ignition to the car being cut. I'm not sure what the best course of action is now or whether or not you can take it to a dealer with a partially full tank of e85.



Don't think there was any power loss when it happen while I was on the highway, engine was still running. Got home and restarted the car, everything seems to be fine for now.

ST-A 04-08-2016 06:14 AM

Have the same code on a customer car with a kraftwerks sc and upgrade fuelpump, actually the code came after changing the pump.
today going to fix it with a new sensor hopefully part nr su003-01106

DocWalt 04-08-2016 11:44 PM

I've gotten this code recently. Guess if it happens again I'll have to try replacing the sensors too. Lame.

Jayfrs95 02-03-2017 03:18 PM

P0462 issue
 
Did anyone fix this? I am having this issue with p0462. My car turns off here and there on neutral. I change one of my fuel sender but still

angadam 02-05-2017 06:35 PM

Quote:

Originally Posted by Jayfrs95 (Post 2845679)
Did anyone fix this? I am having this issue with p0462. My car turns off here and there on neutral. I change one of my fuel sender but still

For me on the third trip to the dealer(on a flatbed) they replaced both senders under warranty. I haven't had an issue since.

guybo 02-05-2017 10:23 PM

I don't know about this car, but in other cars it is common for the sending unit to go just before the fuel pump goes. Jayfrs95 sounds like your fuel pump is on the way out. Start monitoring your fuel pressure and note what the pressure was at when you stall.

DarkSunrise 09-11-2017 11:25 AM

I threw a P0462 code at the track. Was full throttle down a straight when the course workers threw a red flag. Immediately went from ~100 mph to complete stop with a hot engine. About a minute later, saw the CEL pop on. First thought was another fried coilpack (happened before in this exact scenario), but when I checked codes, was surprised to see P0462.

Good news is I cleared it and it went away for the rest of the day. We'll see if it returns.

DarkSunrise 05-13-2019 09:04 PM

Quote:

Originally Posted by DarkSunrise (Post 2976419)
I threw a P0462 code at the track. Was full throttle down a straight when the course workers threw a red flag. Immediately went from ~100 mph to complete stop with a hot engine. About a minute later, saw the CEL pop on. First thought was another fried coilpack (happened before in this exact scenario), but when I checked codes, was surprised to see P0462.

Good news is I cleared it and it went away for the rest of the day. We'll see if it returns.

Had this CEL pop on again. Been a while since I had this problem. Happened after I switched to e85, was on my 2nd tank. Not sure if it's related. Cleared the code and it's been fine since. On my 3rd tank of e85 now. Wonder what's causing this...


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