2007 Accord EX-L 4D 5MT
I was looking up my P1259 and the search returned a lot of "check oil" and "clean solenoid" responses. My oil is fine, so I started looking for how to clean. Didn't really find anything so I went to youtube. I found this excellent troubleshooting video, which tells you more than you ever wanted to know about the VTEC pressure switch and solenoid. I'm posting it here in case anyone else is looking for P1259 troubleshooting.