Power steering pressure switch Dodge Durango 2001. Have code P0551 and looking for this switch to maybe replace it. Many posts saying that if it is leaking it should be replaced.

It's a $10-$15 switch threaded into a power steering pressure hose just below the power steering fluid reservoir on the driver's side of the engine near the front. Look at the reservoir cap, slightly to the right (facing the front of the engine), and down a few inches. Unplug the 2 wire connector, then hold the boss the switch is screwed into with one wrench and turn the switch with another wrench. When it comes loose, plug the opening with a finger so you don't drain all the fluid and quickly screw in the new switch. 5 minute fix, then have someone clear your trouble codes.

Check to see if you have excess air pressure inside the reservior. I removed my cap and had alot of air blast out the top which made me wonder how air was entering the system. Found fluid had leaked through the sensor and into the connector. If fluid can go out then we know air can enter so had to replace the sensor and went ahead and changed the fluid while I was at it. Disconnected the neg battery terminal to reset the codes and everything is running great!.