For Shop Owners

P2647 HONDA - Rocker Arm Oil Pressure Switch Circuit High Voltage

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3 What does this mean?

Possible causes

  • Check engine oil level, oil condition and pressure
  • Faulty Variable Valve Timing and Lift Electronic Control (VTEC) / Rocker Arm Oil Pressure Switch
  • VTEC/Rocker Arm Oil Pressure Switch harness is open or shorted
  • VTEC/Rocker Arm Oil Pressure Switch circuit poor electrical connection
What does this mean?

Tech notes

The most common problem that can set the P2652 code is the engine oil. Before replacing any parts change the engine oil with the factory recommend oil weight.

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.





User Submitted Video
What does this mean?

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

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 ECM/PCM monitors oil pressure in the hydraulic circuit of the VTEC mechanism using the rocker arm oil pressure switch (VTEC oil pressure switch) downstream of the rocker arm oil control solenoid (VTEC solenoid valve). If there is a difference between the oil pressure condition in the hydraulic circuit that is determined by the ECM/PCM command and the oil pressure condition that is determined by the status of the rocker arm oil pressure switch (VTEC oil pressure switch), the system is considered faulty, and a DTC is stored.
OBDII Code P2647 Honda - Rocker Arm Oil Pressure Switch Circuit High Voltage - itimaster.ru

P2647 HONDA Information for specific Honda models

Need more help?

Do you need more help with the P2647 Honda code? Ask a question to our users or find an automotive repair shop near you to help fix the OBDII code

P2647 HONDA Comments

Help us improve itimaster.ru. Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the P2647 Honda code? Have you replaced any parts?
Any information is appreciated. Thanks
Repair Importance Level: 3
1=Low 2=Medium 3=High
Repair Difficulty Level: 3
1=Easy 2=Moderate 3=Hard

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