Engine-Codes.com | All About OBDII Engine Codes
Engine-Codes.com | All About OBDII Engine Codes

P2646 Honda

P2646 Honda - VTEC Oil Pressure Switch Circuit Low Voltage

PDF
P2646 Honda Comments |  Add Comment
Possible causes
- Check engine oil level and pressure
- Faulty VTEC Oil Pressure Switch
- VTEC Oil Pressure Switch harness is open or shorted
- VTEC Oil Pressure Switch circuit poor electrical connection

Help with Possible causes What does this mean?
Tech notes
For the 2003–2005 Accord L4s, 2003–2005 Elements, and 2002–2005 CR-V Honda models replacing the VTEC oil pressure switch (P/N 37250-PNE-G01, H/C 6737217) usually fixes the problem.
Help with Tech Notes What does this mean?
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P2646 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.

P2646 Honda Information for specific Honda models
Need more help?
Do you need more help with the P2646 Honda code? ask a question to our users or search the top hand picked automotive forums for more information


(You will add more details to the question in the next step)
or
HONDA Technical Service Bulletins for P2646 code
2003 HONDA ACCORD Electrical System Details
2004 HONDA ACCORD Electrical System Details
2005 HONDA ACCORD Electrical System Details
2002 HONDA CR-V Electrical System Details
2003 HONDA CR-V Electrical System Details
More Bulletins Help with Technical Service Bulletins What does this mean?
Need parts?
Need parts to fix this code? Search hundreds of stores at the same time and compare prices


Help Engine-Codes.com
Help us improve Engine-Codes.com. Leave a comment below or tell us if the information above help you fix the code. What are symptoms is your vehicle for the P2646 Honda code? Have you replaced any parts?
Any information is appreciated. Thanks
Engine-Codes.com Comments Powered by Disqus
Google +
Engine Light ON?

The Engine-Codes.com ELM327 WiFi Car Diagnostic connects to your Android phone, iPhone, iPad, or Windows computer from your vehicle.
Ask OBDII Question