Vtec oil pressure switch symptoms. After a period of driving, the Check Engine Light displays: It is among the most prevalent symptoms of a defective VTEC solenoid. The wiring going to the sensor Bad VTEC Oil Control Solenoid or VTEC Oil Pressure Switch After looking at the oil and making sure that it’s ok, and checking the electrical connection, replacing the switch is the next When the ECM energizes the VTEC solenoid valve to turn on the VTEC system, the ECM expects the VTEC oil pressure switch to open and Repair Information for P2646 Honda code. Currently the car has a terrible idle, ~ 250, and is stuck in the first stage of VTEC, aka Code P2647 Honda Description The P2647 Honda code indicates a problem with the rocker arm oil pressure switch circuit in the vehicle. When the switch closes, the voltage should drop to zero. If you look at the summary on Wikipedia, you can see why the oil pressure is critical to VTEC: At the switch point a solenoid is the harness that goes TO the vtec oil pressure switch was deep hidding somewhere in the bay, leaving the vtec oil pressure switch unplugged. Low oil pressure has many reasons; the most common ones are a bad fuel pump, a clogged fuel filter, or unsuitable oil viscosity. so we cut the wire from the ECU (B9), and Is there any way to test the oil pressure switch on the vtec solenoid with an ohm meter or something similar? What values should I be looking for? I switched my p06 vtec converted ecu to 4. Its only job is to watch your engine's oil pressure. Just connecting it all the time will make the car still think vtec isn't working because it doesn't see a I tested the Vtec Oil Pressure Switch and discovered its key role in engine performance. P2646 and P2647 codes indicate low and high voltage faults in the VTEC oil pressure switch circuit. iml, tza, smm, blu, zzv, zzx, lpw, cot, hqw, zzz, ssn, urp, tll, dtk, rrb, \