LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

Solar Sensor Replacement? A/C Related

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Old 07-20-08, 05:52 AM
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wrpsuite
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Default Solar Sensor Replacement? A/C Related

Anyone ever do this operation on a 1st gen?

The A/C is blowing cold on the right side vents and warm on the drivers side vents. I ran a A/C diag and received code 21 w/o any beep. I'm wondering how to test or replace the sensor/ circuit? Thanks in advance....
Old 07-20-08, 08:36 AM
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LiCelsior
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check puredrifters FAQ on the 2LS, should have code problems and search here for your code to see if u find anything. search "code 21"
Old 07-24-08, 12:06 AM
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skperformance
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the most simple of all the codes, It means the sensor sees no sun (solar)
Old 07-26-08, 08:02 AM
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As per the Lexls.com website, the most common reason for that fault is... you're in your garage and it's somewhat dark.

I doubt that sensor is actually your problem. Try the diagnostics again in the sunlight to see if that eliminates the error code.

Good luck.
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