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GX 470 Warning Lights VSC OFF, VSC TRAC, Anti Skid, Check Engine

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06-01-22, 12:31 PM

#121

sethpnc

2nd gear

Join Date: May 2022

Location: NC

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Thanks all for this thread! I bought a "new" 2005 GX470, and the VSC OFF/VSC TRACK/CEL just came on today after a week of ownership. I drove to the Toyota dealership, bought a new gas cap (part number: 77300-47010), drove four miles to an AdvanceAuto to check my codes. Pulled a P0420, but then when I started it back up, all lights were off.

New gas cap appears to have done the trick!

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02-06-24, 12:20 PM

#122

sviers

1st Gear

Join Date: Feb 2024

Location: Georgia

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Quote:

Originally Posted by germangs

Scanned the codes today. Got two records P0420 Catalyst System Efficiency Below Threshold (BAnk1) and P0430 the same message for Bank2.
I reseted the codes but the light came back after 20 minutes driving.
I guess I will try to replace the fuel gas cap part 77300-33070 tomorrow.
hat did you do to remove and fix the issue?

Thanks

How do you reset the codes?

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02-12-24, 01:12 PM

#123

jovaney179

1st Gear

Join Date: Nov 2023

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4 horseman lights coming on even after fixing

Quote:

Originally Posted by misergx470

I am having same issues on my 2006 gx470. Bought used at 48,000 miles and have only had trouble since weather has gotten colder. After owning 30 days, same lights came on for me with a code P0158. Had Bank2 Sensor 2 replaced and light went off for a week and just came back on. Took to local mechanic and now codes is P0051 which is saying Bank 2 Sensor 1 is bad. I am worried there is an underlying issue and these replacements are expensive... any advice?

know I had the same problem with my 09 GX. Turned out to be the wires by the firewall being chewed up by mice. They kept on making contact with each other setting off different codes. I put in four catalytic connectors converters. The new pump and the two filters even after all this the codes continue to come on. This was then resolved after a me Janice found the stripped wires and taped them up. 2500 miles later after an extensive wash they came up again noticed the tape was peeled off. So I will doing this again to eventually get the harness.

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02-12-24, 04:33 PM

#124

chiph9

Pole Position

Join Date: Feb 2014

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I've been meaning to give these a try. One of the commenters there says that if you apply flux before inserting the wires into the shrink tube the solder flows much better.

Chip H.