Code p 1259 refers to engine coolant system valve --short to ground
code p 1259 refers to Vtec-system malfunction that is the code for 2 different makes of cars
p 1**** numbers are manufacturer specific so you have to put in the make and model and year of the car with the fault code
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
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