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VSC light, check engine light, and trac off turned on a 65k mile LS430

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Old 05-28-23, 04:26 PM
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Riz1
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Default VSC light, check engine light, and trac off turned on a 65k mile LS430

hope everyone is having a good memorial weekend, well the infamous VSC light, check engine light, and trac off came on as I moved my car out of the garage. I ran the codes and it came out to P0456. Any idea what kind of problem that it could be? I'm hoping its just a replacement of a gas cap 😅 Hope those who are more experienced can point me in the right direction. Thanks all






Last edited by Riz1; 05-28-23 at 04:30 PM.
Old 05-28-23, 04:45 PM
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JffGRY706
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if you disconnect your battery for a few minutes the lights will go away
there is a chance they will never come back or at least they will not come back for a long time, many miles
if and when they come back a trip to the dealer might be needed
Old 05-30-23, 03:54 AM
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BigBoomer
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Most likely the gas cap but could be something else leaking in the fuel system.
Old 07-11-23, 02:09 PM
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Riz1
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bought a brand new oem gas cap, after reseting the light. The lights came back on after couple hundred miles.

Now the real fun begins trying to diagnose this issue and fix it.
Old 07-11-23, 02:51 PM
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RideSmooth
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"CHECK" engine light and P0456, suspect hard, brittle hoses. Fixing that should take care of "Check VSC" & "TRAC OFF lights.
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Old 07-11-23, 10:57 PM
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aypues
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I had this and my guys wanted to smoke check everything. I said no, just start replacing the most likely culprit hoses. They gave me 3 progressive stages and we started with level one and it hasn’t come back on in months. If it comes back we do the level 2 intervention.
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Old 07-14-23, 05:41 PM
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Riz1
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upon further inspection I found that there were some cracks on the hoses. Anyone know what part # these two hoses are?
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