My cars check engine light comes on sporadically. it has failed state inspection due to the code P1259 manufacturer controlled fuel and air metering. i've looked all over the web trying to find out what exactly the problem may be and how tho fix it. i found something telling me that it has something to do with the VTEC, possibly the wiring to the selenoid. i have been unsuccessful in finding anything that could even tell me where to locate the selenoid or any of the wiring to it

SOURCE: Our 2000 Honda Odyssey shifts hards between 1st

I'm not sure why you got that code definition. P1259 in the factory manual reads, "VTEC system malfunction". According to the manual you are supposed to reset the powertrain control module (PCM) then road test--accelerating in first gear to over 4000 rpm and hold that rpm for at least two seconds. If the code does not repeat then do the road test two more times just to be sure. If the code does repeat during the three acceleration tests, then the VTEC pressure switch and solenoid valve should be checked. If the code does not repeat during the three acceleration tests, then the system had an intermittant fault. As for the TCS light being on, I know this may sound simple but is the TCS switch off? If it is, that will cause the light to come on. The TCS light is more applicable to an ABS brake system problem. If the transmission has a fault, you should see a diagnostic code that begins with P07xx or P17xx. The green D4 drive light may also blink. Based on your symptoms of excessive shock in 1-2 upshifts, the book suggests the shift solenoid valve C could be defective, or the 2nd clutch pressure switch or the circuit could be defective, or there could be foreign material in the separator plate orifice, or seven other possible causes. I would suggest clearing the code and replacing the transmission fluid with genuine Honda fluid and then see if the code and the symptoms return.

SOURCE: 2002 Honda Accord vtec 2.3l has a check engine

1.1 o2s(ho2s)(s1) = eng
3.2 map circuit = high input eng
7.1 t p sensor(a) = voltage low eng

SOURCE: 2000 honda accord p1259 code? vtec solonoid was

THERE IS A RESTRICTION OR A BLOCKAGE SOMEWHERE TO THE VTEC SOLENOID YOU WILL NEED TO CLEAN OUT THE BLOCKAGE TO FIX THIS PROBLEM

SOURCE: VTEC System Malfunction code P1259

P1259 Immobilizer to PCM Signal Error,, ok, first does the car hic up at around 4000 rpm'? what you have here is possibly 2 things with a honda, and that code just happens to pop up for both,, One, change the oil, and 2, you may need to change the Vtec pressure sensor/screen (solenoid),, its located between the Vtec solenoid and the head,, My guess is that your oil is pretty bad, or you just had an oil change, either way ,, clean that sensor,, it may or may not work, if not, you'll have to replace it