2005 MDX, 206K. Wife was pulling in the driveway (luckily) and the speedo stopped working, gear selector started blinking, and CEL came on. Checked the code, P0722 Transmission output speed sensor. I got a new one, installed it, cleared the code, and all is good. I checked the old one and am a bit alarmed. It looks like the face has been worn away. It looks like it was gradual, and not catastrophic. I just did a drain/fill/drain/fill/drain/fill in the tranny fluid a month ago, but I'm thinking I should do another drain/fill. Has anyone seen anything like this before? Should I have additional concerns?