Wiring Issue – P2646 indicates that the voltage from the VTEC/Rocker oil pressure switch is low. There is a Factory Service Bulletin for the following Honda Models 2003-2012 Honda Accord L4 2002-2005 Honda Civic Si 2002-2009 Honda CR-V 2011 Honda CR-Z 2003-2011 Honda Element 2007-2011 Honda Fit The factory bulletin suggests that replacing the VTEC oil pressure switch (P/N 37250-PNE-G01, H/C 6737217) take care of the problem. Order your parts online or pick them up in-store at your local Advance Auto Parts. Related questions 0 votes. Rocker Arm Oil Pressure Switch. When the VTEC oil pressure switch closes, the voltage should drop to zero. I have a 2003 honda accord vtec 2.4L engine - where is the oil pressure switch located? This is how the PCM knows if oil pressure was applied to the VTEC system. If the vehicle’s malfunction indicator lamp (MIL) is on and diagnostic trouble codes (DTC) P3400 (VPS Stuck Off Bank 1) and/or P3497 (VPS Stuck Off Bank 2) are present, Honda recommends that one or both of the rocker arm oil pressure switches be replaced. The VTEC system controls the variable valve timing in your Honda. asked May 5, 2012 by anonymous. P2647 HONDA Description The VTEC system activates the rocker arm oil control solenoid (VTEC solenoid valve) by command from the engine control module (ECM)/powertrain control module (PCM), and it charges/discharges the hydraulic circuit of the VTEC mechanism that switches valve timing between Low and High. The oil pressure switch is located on the right side of the engine. / location of honda 2007 Oil Pressure Switch. location of honda 2007 Oil Pressure Switch. It's a switch, not a pressure sensor. The transmission oil pressure switch has contacts within its housing. There is a Factory Service Bulletin for the following Honda Models 2003-2012 Honda Accord L4 2002-2005 Honda Civic Si 2002-2009 Honda CR-V 2011 Honda CR-Z 2003-2011 Honda Element 2007-2011 Honda Fit The factory bulletin suggestss that replacing the VTEC oil pressure switch (P/N 37250-PNE-G01, H/C 6737217) take care of the problem. Report; Follow; Asked by GuruXXGMW Oct 19, 2018 at 10:11 AM about the 2007 Honda Accord EX. Check prices & reviews on aftermarket & stock parts for your 2006 Accord Oil Pressure Switches and Senders. I had to get a fitting that had a metric male end, one metric female and a standard female fitting for my Toyota when I did this. It does this by activating the VTEC/Rocker arm solenoid. When the pressure is lower than the solenoid, the check engine light will come on and you’ll get P2646. You will need to determine if the switch is metric or standard fitting before getting a t-fitting. Inside there is a spring to keep the contacts bridge away from the positive and ground contacts. were it the location of vtec oil pressure switch on engine. You'll have to get a t-fitting to be able to tap into it and keep the switch. p2646; honda; 0 votes. The variable valve timing oil pressure switch is a normally open switch located at the VVT solenoid. Compare 2006 Honda Accord Oil Pressure Switches and Senders brands. Low Oil – If the dipstick is not registering oil at all, it may be too low for the VTEC system to function properly. ... location of 2007 honda accord SE V6 oil pressure switch. This means that a wiring issue very well could be at fault. This would hurt the oil’s viscosity and trigger the P2646. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. When this system fails to operate properly the ECM may set a code. 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