P0553, power steering pressure sensor input high

I was just randomly scanning for codes with my Edge (since it's just so easy) and it came up with this. I did some searching on this forum (one reference, didn't see it addressed) and a little googling. What I found was the location (in between the front diff and the rack on a hose). I crawled under there, visually checked the wire (intact), pulled the wire off the sensor. Didn't look like any moisture had gotten in there. Put some dielectric grease in the connector and put it back together. Cleared the code, started it up, code came back.

I had changed out some of the power steering fluid a few weeks back by using a syringe to drain the reservoir, filling it with power steering fluid, starting it, turning the wheel back and forth a few times, shutting it off, and doing it again a few times. I used mostly O'Reilly power steering fluid because I had that in the garage. I see now that they call for Mercon 5 in there. Think this could be related? Or maybe the sensor just randomly went bad?

I'm assuming I'll get a shower of fluid when I pull that thing out.

Think it just needs to be replaced?

 

You might have messed it up with power steering fluid. Trust me, i learned that lesson a while back. Same with synthetic brake fluid lol.

 

I suppose I could buy a few quarts of Mercon V and do the suck 'n cycle thing again and see if it starts working again. That way, when it doesn't start to work (which I'm sure it won't), I won't have to worry about changing the fluid when I have to replace it anyway.

Any idea how much fluid will come out when I pull the sensor out?

 

I would cycle it before you replaced the sensor. You might lose up to 1/4 quart or so.