Code9 is CYL sensor. Oddly enough pretty much every code chart I've seen lists Code9 as CYP sensor... But the 92-95 Honda Manual says it's the CTL sensor.

disconnect the plug at the distributor and measure the resistance between the Orange and White wires, there should be 350-700ohms. if there isn't replace the distributor. If there is let me know, I'll track down the wire colors and routes for you.

BTW that plug is probibly the CYP sensor, and no the P05(CX) ECU does not use it. You should really chip your P05 and run a D16 fuel map, everything will work better.