I hate to bump an old post. But I am getting the same error. The valve has been replaced new. But still the same thing. I went in and reset the SES light with a reader, but after a while, it came back one.
Also, unrelated, I am getting the anti lock, brake, and airbag lights on my dash (these have been coming up for a long while though, even after replacing pad/rotors,etc). A friend said I may just need a new ECM, or to have my current one updated. I am pretty novice at this, but might that be the cause for both the SES and other lgihts?