P1259 refers to Vtec system malfunction.
Trouble code P1259 means: VTEC SYSTEM B1 FAILURE
Trouble code P1259 means: VTEC SYSTEM B1 FAILURE
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Diagostic codes P1259 indicates a problem with the VTEC control system on your car. There is an excellent article found here, and also provides a method of diagnostic the problem. It shows you if it could be a wiring/sensor problem, or a oil pressure/clock problem. most likely cause is excessive engine revving or jack rabbit starts http://www.asashop.org/autoinc/jan2005/techtips.htm
vtec malfunctions are mostly due to oil pressure issues. u might just be low on oil and its unable to create the pressure it needs to operate correctly
Vteck problem. This is the Variable valve timing system. This can be triggered by low engine oil level, wiring issues and the special little filter in the system getting dirty.