2000 lx470 AHC not working.. code C1762

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Joined
Oct 24, 2026
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Location
califronia
Hello, I am coming on here searching for help I recently bought a 2000 lx470 with 180,000 for 4 thousand but the only problem was the AHC was out. Didn't think it was gonna be a big deal until I tried researching and fixing it and I realized how difficult it is. Im not to mechanically inclined but with the right guidance I can do it.

So the day I got the car it was stuck in low, at its lowest position basically at the bump stops, and the ride was super uncomfortable and bouncy. Also I looked at the reservoir fluid looks pretty dirty and it's full all the way to the top, way past the max line. The AHC light was blinking also and I read the code by doing the paper clip method to the diagnostic tab and got code C1672.

Im on here trying to get some guidance seeking help or suggestions because I really want to keep the system I think its cool and heard its super comfy but im not opposed to swapping to conventional but nothing is rusted or leaking so I feel like if its something little it could be worth to save it.
 
A quick google search:

1794299135848.webp
 
Take it to a Toyota specialist! Or replace with traditional suspension.

Or study up. There are a lot of resources on this website that go through the AHC and how it works and how to diagnose.
 
Don't throw the AHC yet, try to read up on it first.
There is a huge post about AHC maintenance.
 
Don't throw the AHC yet, try to read up on it first.
There is a huge post about AHC maintenance.
Is it really worth it to try and salvage it I mean it’s broken right now and I have no idea what the condition of everything else is. I think swapping to traditional would save me a lot of stress and money. Isn’t a new pump from Lexus like 3 grand? I’m not sure if I get get a used one or one from Japan but I saw the price tag or a oem one and almost s*** myself.
 
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