Engine light came. Computer sencer said it isP1259

have you checked the timing belt? don-ohio (:^)

Oxygen sensor is not communicating with the ECM and the Vtec code is for the internal valve timing and cylinder shut down after reaching highway speeds. Dealer ship repair or a shop you know has the tools to fix the internal engine parts as well as the electronics that control the engine.

buy it,this is the problem, P1259 VTEC MALFUNCTION CODE FOR HONDA 2 3L VTEC ENGINE ,replace it for about 150 bucks. OES Genuine Cam Adjust Solenoid for select Acura/Honda/Isuzu models, http://www.amazon.com/gp/product/B001G7ODLS
Amazon com OES Genuine Cam Adjust Solenoid for select Acura Honda Isuzu... ,,your check engine light also needs to be replaced,it was probably taken out in order to sell the car,it is illegal to do.

What kind of vehicle, and what is the actual code ?

P 1259 VTEC oil pressure switch circuit or vtec solenoid or valve,Here the situation you can be dealing with the oil pressure switch or the VTEC solenoid or valve,

Need year model trans type and engine . P1259 is a code for a "A problem in the VETC oil pressure switch circuit or valve circuit."

p1259 is a problem with the VTEC system. this system is for improved performance at higher rpm's. oil can get sludged up and clog the system, or the VTEC solenoid can just go bad. you can always have someone with a scan tool clear the codes to turn off the light, but until the problem is fixed, it will just keep coming back on

The P1259 : is problem in the VTEC Oil Pressure Switch circuit or VTEC Solenoid Valve circuit.
check the wire on the VTEC Oil Pressure if it's loose.

Check the oil level on level ground.

V-TEC valve open at the pre-set RPM is total depend on the oil to opening the third valve.

If the pressure is not at the right level then the lifting will not be completed.

The lift sensor will trigger P1259 to warn the driver for V-TEC malfunction


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Thanks

MUSTGO

P1259 is a code for vtec malfunction usually cause by a bad vtec solenoid, vtec pressure sensor, low oil level, bad connection. Was oil change done? May want to check the oil level. P1166 is a code for a primary o2 sensor 1.