The air nozzle will also help clean up gunk and build up which may be causing the pintle to stick. A VTEC solenoid valve in good working condition has an air tight seal and should not leak. Honda Odyssey Check Engine Light Vsa Oil Preasure Flashing Codes P2647 P2646 By. With the solenoid OFF, you should not have any air leaking through the bottom center pintle. I just purchased my very first minivan, a 2007 Honda Odyssey EX-L. When the system is not working correctly, the rocker arms are not moving to the.
#P2646 07 HONDA ODYSSEY CODE#
I would also clean the ports with brake cleaner. Code P2646 is a code for the A rocker arm control circuit performance problem. Checked oil and it was pretty much empty. Your next step is to do the same thing you were doing in your video, but this time use an air blow nozzle and blow through all the 3 ports while energizing / deenergizing the solenoid. diagnostic trouble code (dtc) p2646 points to slightly different things on different honda vehicles, including the 2007 odyssey - 'rocker arm oil pressure switch circuit low voltage' on the j35a6 engine, or 'vtec system stuck off' on the j35a7 engine. Recently had code P2646 come up after I noticed around 4k RPM my engine started making a ticking noise. With VTEC solenoid command ON, PCM expects HIGH oil pressure from VTEC pressure switch and vice versa. I would like to add that on a standard VTEC system WITHOUT VCM, the logic decision is opposite. *VTEC solenoid command OFF- engine is running conventional 6 cylinder operation, the PCM is expecting the EOP sensor to stay HIGH (above 6psi).įor technicians with higher end scanners there is a VCM TEST available which commands the VTEC solenoid ON and OFF while monitor oil pressure changes, most of the time it is intermittent so you have to dig deeper) /rebates/&.com252fhonda252fen29i-honda-odyssey-giving-p2646-code-engine. *VTEC solenoid command ON to actuate 3 cylinder pause mode the PCM is expecting EOP sensor to drop LOW (from experience under 6-8 psi is criteria for LOW)
Trace the wiring back and see if it is damaged anywhere. Make sure that it is undamaged and securely plugged in. Take a look at the wiring harness where it plugs into this switch. This means that a wiring issue very well could be at fault.
#P2646 07 HONDA ODYSSEY UPDATE#
There is a PCM software update for a P2647 VTEC system stuck OFF which does not apply to you. Wiring Issue P2646 indicates that the voltage from the VTEC/Rocker oil pressure switch is low. The Spool valve assembly in charge of actuating 3 Cylinder Pause mode consists of mainly three components VTEC spool valve, EOP (engine oil pressure sensor), and VTEC solenoid valve. (2nd gen VMC controls both heads-intake/exhaust valve sides). It is done so on only the rear cyl head- Bank 1. On the 2005 Odyssey you have the 1st generation VCM (variable cylinder management) which controls cylinder pause on the intake/exhaust valve side.
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