Question about 2004 Honda CR-V

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I have a Honda 2004 CRV - the repair ( OBD II) code is P2647 - what does that mean?

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P2647 VTEC Oil Pressure Switch Circuit High Voltage - With Automatic Transmission Basicallly the sensor has gone bad or an oil passage has become blocked.

**. Locate the Variable Timing Electronic Control (VTEC) pressure switch on the end of the cylinder head. Honda has had problems with the VTEC oil pressure switch, there is an updated part number for the vehicle (37250-PNE-G01). On this vehicle the VTEC oil pressure switch can fail at any RPM.
2. The VTEC oil switch is normally closed, and grounds the reference voltage from the Engine Control Module (ECM) on the Blue/Black (BLU/BLK) wire. If the code sets at idle - 2500 RPM - and the Brown/Yellow wire has a good ground, then suspect a faulty VTEC oil pressure switch.
3. At approximately 2500-4000 RPM and when driving the vehicle, the VTEC system should turn on. To turn on the system, the ECM energizes the VTEC Solenoid valve and it allows oil pressure into the intake valve rocker arms, the oil pressure opens the VTEC oil pressure switch so the Engine Control Module (ECM) can verify that the VTEC did turn on correctly.
4. The code will set at idle to 2500 RPM if the reference voltage is not grounded. The code will set above 2500-4000 RPM if the VTEC oil switch does not open.
5. If the code sets at 2500-4000 RPM or higher, the problem can be a low oil level or pressure, or a malfunction in the VTEC assembly.
Potential Causes: Low Engine Oil
Plugged Oil Passage
Insufficient Oil Pressure
Plugged Oil Screen
Insufficient Oil Volume
Malfunctioning VTEC Oil Pressure Switch
Defective VTEC Solenoid

Posted on Jul 25, 2009

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OBD-II (Check Engine Light) Trouble Codes Welcome to OBD-Codes.com, your headquarters for everything OBD-II related. For more information on what OBD codes are, OBD-II codes explained, explanation of fuel trims, or answers to other questions, visit our FAQ area. The most common OBD-II codes are P0xxx powertrain codes, which are listed below on this page, along with P2xxx generic & P3xxx generic codes (please scroll down). For the other OBD-II codes, choose from Bxxxx - B Codes - OBD-II Body Codes or Cxxxx - C Codes - Chassis Codes, and Uxxxx - U - Network Codes. If your DTC (diagnostic trouble code) begins with P1xxx, that means it's a manufacturer specific code. For more information on P1 codes, choose your vehicle make here: Acura Audi BMW Chevrolet Dodge / Chrysler / Jeep Ford Honda Hyundai Infiniti Isuzu Jaguar Kia Land Rover Lexus Mazda Mitsubishi Nissan Subaru Toyota VW

Please use our new & improved search engine to find information on your trouble codes. Search Now! This list contains standard diagnostic trouble codes (DTC's) that are used by some manufacturers to identify vehicle problems. The codes provide below are generic codes that may not apply to all vehicles. Vehicle manufacturers may use manufacturer specific DTC codes that are different from the codes shown below. Foreign vehicles may also use DTC codes different from the generic DTC codes. We recommend that you not depend on the DTC codes in this list for vehicle repairs until you confirm the generic DTC codes apply to your vehicle(s). The list below is for information purposes only and is not intended for use in vehicle repairs.

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Have a 2004 CRV hesitates or jumps on excelleration code 2647 is what it reads. I have already changed the oil pressure switch but it is still doing the same thing. Any help would be appreciated.


P2647 VTEC oil pressure switch circuit high. The letter P stands for power train.When a code P2647 comes in the shop VTEC oil pressure switch usually fixes the problem. In front of the vehicle on the right hand side there is a VTEC solenoid valve one one the intake.Right next to it is the VTEC oil pressure switch . Both have grey connections. If you complain about rough idle then yes service solenoid (they do plug up from low end oil or lack of oil maintance).The code is circuit.that means that battery voltage has to be present. When the code P2647 appears VTC is disabled and valve timing is fixed at a fully ****** position.This is where you say you feel like its running out of gas is from.Switch is you just replaced it, a electrical diag has to be performed.From switch to PCM

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1 Answer

Check engine light on on 2005 honda accord coupe. 4cylinder. code is p2647 said trouble shooting do all repairs on vehicles but do not know that code.


p2647 is rocker arm actuator A- bank 1 stuck on--- to fix it should be the VTEC oil pressure switch. That switch will be on the cylinder head. Towards the windshield and passenger's side (I think).

Go to www . hondapartsdeals . com {remove the spaces when typing}

Go to parts, enter your car's info. System: Engine Component Vtec Oil control valve. That diagram should help a lot.

Good Luck.

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P1600


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