engine code p0456 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

vokiller · 08-08-2021, 03:03 PM

Can anyone help me fix this error

Yoshoobaroo · 08-08-2021, 03:56 PM

Check the gas cap

Evap error:

https://www.google.com/search?q=p045...ile-gws-wiz-hp

Ultramaroon · 08-08-2021, 04:31 PM

Quote:

Originally Posted by Yoshoobaroo

Check the gas cap

Evap error:

https://www.google.com/search?q=p045...ile-gws-wiz-hp

Haha... "Can anyone help me google this error?"

Yoshoobaroo · 08-08-2021, 05:04 PM

Quote:

Originally Posted by Ultramaroon

Haha... "Can anyone help me google this error?"

I felt passive aggressive enough to use LMGTFY but then decided to be nice

Ultramaroon · 08-08-2021, 06:30 PM

Quote:

Originally Posted by Yoshoobaroo

I felt passive aggressive enough to use LMGTFY but then decided to be nice

so many feels

RZNT4R · 08-08-2021, 08:19 PM

Last week an old guy brought in a CRV with EVAP leak codes.

I scan it, codes are not in active or pending, just in permanent, not wanting to diag the car for nothing, I touch nothing, clear the codes and run the EVAP self test. It passes, system is normal. I ask, and it turns out he messed with the fuel cap but when the light didn't turn off he brought it in thinking it was something else.

So my question to you is: What it your ideal outcome? You bring it in and pay 20 minutes of diag time + scan tool to be told it's your filler cap not tightened all the way, or you bring it in and pay 20 minutes diag time + scan tool to be told it WAS your filler cap and you brought it in for nothing.

I guess what I'm trying to say is, Very Small Leak is a 0.020" hole, be prepared to guess and wait. if you don't wanna, then don't touch it at all.

JohnH · 08-18-2021, 12:51 AM

evap codes can be a total bitch.

or they can be super simple.

NARFALICIOUS · 08-18-2021, 03:40 AM

Location says New Jersey, I'm guessing you never felt the texture of your own gas cap's cheap plastic before or even knew that it hangs on the gas door for convenience?

Is your check engine light currently on?
Go home, turn off the car, pop the gas door, take a deep breath, touch the gas cap and feel it. It's not going to hurt you. Unscrew it, then screw it back in and make sure it clicks in place. Now spend the next 200-300 miles driving your car at many different conditions: highway, city, hills, various weather conditions(temps), accel, decel, etc. If you're lucky enough to have triggered the car's self-monitoring system, and if it was just a gas cap tightening issue, then the light should go off.

08-08-2021, 03:03 PM	#1
vokiller Junior Member Join Date: Dec 2020 Drives: White 2013 brz premium Location: New Jersey Posts: 4 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	engine code p0456 Can anyone help me fix this error

08-18-2021, 12:51 AM	#7
JohnH Professional wrench Join Date: Jun 2020 Drives: 2020 BRZ ST RS Location: BC Canada Posts: 117 Thanks: 58 Thanked 39 Times in 29 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	evap codes can be a total bitch. or they can be super simple. __________________ 2020 BRZ Sport Tech RS World Rally Blue '18 TS Suspension, camber bolts, align. Gruppe-S UEL header/overpipe Wayne Rom Stg 2+ tune 225/45VR17 RT660s

08-18-2021, 03:40 AM	#8
NARFALICIOUS Senior Member Join Date: Aug 2015 Drives: 88 Supra 1JZ, 16 FRS, 25 GR Corolla Location: Johto Region Posts: 599 Thanks: 62 Thanked 361 Times in 207 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Location says New Jersey, I'm guessing you never felt the texture of your own gas cap's cheap plastic before or even knew that it hangs on the gas door for convenience? Is your check engine light currently on? Go home, turn off the car, pop the gas door, take a deep breath, touch the gas cap and feel it. It's not going to hurt you. Unscrew it, then screw it back in and make sure it clicks in place. Now spend the next 200-300 miles driving your car at many different conditions: highway, city, hills, various weather conditions(temps), accel, decel, etc. If you're lucky enough to have triggered the car's self-monitoring system, and if it was just a gas cap tightening issue, then the light should go off. __________________ NARFALICIOUS Noob Poster 1988 \| 2016

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08-08-2021, 08:19 PM	#6
RZNT4R Professional Mechanic Join Date: Apr 2010 Drives: 2017 86 6MT Oceanic Location: Quebec, Canada Posts: 789 Thanks: 17 Thanked 634 Times in 371 Posts Mentioned: 12 Post(s) Tagged: 0 Thread(s)	Last week an old guy brought in a CRV with EVAP leak codes. I scan it, codes are not in active or pending, just in permanent, not wanting to diag the car for nothing, I touch nothing, clear the codes and run the EVAP self test. It passes, system is normal. I ask, and it turns out he messed with the fuel cap but when the light didn't turn off he brought it in thinking it was something else. So my question to you is: What it your ideal outcome? You bring it in and pay 20 minutes of diag time + scan tool to be told it's your filler cap not tightened all the way, or you bring it in and pay 20 minutes diag time + scan tool to be told it WAS your filler cap and you brought it in for nothing. I guess what I'm trying to say is, Very Small Leak is a 0.020" hole, be prepared to guess and wait. if you don't wanna, then don't touch it at all.

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