It is simple. It looks like a little flying saucer or pancake and it is in the rear of the engine on top near windshield.There are two hoses that plug into it from the exhaust, and one coming out, and one on bottom (total of 4). You can just unplug the hoses and replace them easily.
But how do you clean the tube that egr value connect to?
SOURCE: How to replace EGR valve on 2000 camry V6?
If you have a P0401 code from a CEL, the first thing is to check the EGR vacuum modulator. It is a little well usually next to the EGR. Pop the cap off and dust the little sponge inside. Sometimes this gets stuffed up with carbon particles and causes recirculation problems. You should clean the tubes hooked to it while you are there. Reset the code and see if the light comes back.
Replacing the EGR is not a tidy job. It is an expensive part to replace and you will disconnect the three hoses and dismantle it from engine by two nuts. Save it for the later if the previous trick fails to work.
SOURCE: OBD code 0401 (1997 Toyota Camry 4 cyl)
There is a VSV (vacuum switching valve) , usually mounted on the back side of engine block, under the intake manifold, as well as the map sensor, that can also cause that code if one or the other is faulty. It takes some pretty detailed troubleshooting to confirm this in some cases, so if that's not in your line of work, you may have to have it properly diagnosed, or take a 50/50 shot at which one first.
SOURCE: Difficulty to replace EGR valve in 1999 totyota camry 4-cyl automatic
If you have small hands it can be easy. The space between firewall and EGR is tight but it wasn't too difficult to remove. The vacuum hose at the bottom was hard to pull off and I ended up cracking it and had to splice it. It was more difficult to re-install the EGR then remove it. I had a difficult time with keeping the gasket aligned while bolting it in to the lower tube. I took a few attempts. I suggest when replacing the EGR leave the mounting bolts loose so you can more easily align the metal tube. I would tighten the metal tube at the bottom of EGR first then tighten the upper two mounting bolts on top. It took me about 5 minutes to remove and 15 minutes to replace. I would be sure to clean the IAC too after cleaning the EGR. I sprayed throttle bottle cleaner down the bottom hole located on the throttle body and let soak about 15 minutes then start and run the engine a minute and repeat the process. This helped smooth the idle while stopped at a light. It also stopped the idle from shaking and almost stalling the car out at a traffic stop when the engine was warm.
SOURCE: TOYOTA camry 2000, 2.2 L check engine light on, P 0401code
hello, to fix this problem what you need to do is replace your egr valve its a pretty straight forward replacement ,to get a new one goto any auto parts store and tell them what you need thay all carry egr valvs in stock cost is about 30.00$
SOURCE: check engine light on-code says egr valve is bad
the egr system consists of control circuits as well as the egr valve itself. troubleshooting will have to be performed in order to pinpoint the fault. the valve may just need cleaning. there may be damage in the long run since the egr system introduces exhaust gas to the air intake to reduce combustion temperatures.
http://www.aa1car.com/library/egr.htm
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