P2652 Honda Code - Rocker Arm Oil Pressure Switch 'B' Circuit High Voltage
Quick Answer
The VTEC system activates rocker arm oil control solenoid B by command from the Powertrain Control Module (PCM), and it charges/discharges the hydraulic circuit of the VTEC mechanism that switches valve timing between Low and High. Common causes include Check engine oil level and pressure, Faulty VTEC Oil Pressure Switch, VTEC Oil Pressure Switch harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P2652 Honda indicates Rocker Arm Oil Pressure Switch 'B' Circuit High Voltage.
- Common causes
- Common causes include Check engine oil level and pressure, Faulty VTEC Oil Pressure Switch, VTEC Oil Pressure Switch harness is open or shorted.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P2652 Honda Description
What are the Possible Causes of the DTC P2652 Honda?
- 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
How to Fix the DTC P2652 Honda?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P2652 Honda code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P2652 Honda code?
Need more information on how to fix the P2652 Honda code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P2652 Honda code diagnosed by a professional: Find a repair shop in your area
Information for Specific Honda Models
- P2652 2008 Honda Accord — Rocker Arm Oil Pressure Switch 'B' Circuit High Voltage
- P2652 2009 Honda Accord — Rocker Arm Oil Pressure Switch 'B' Circuit High Voltage
- P2652 2010 Honda Accord — Rocker Arm Oil Pressure Switch 'B' Circuit High Voltage
Frequently Asked Questions about P2652 Honda Code
No Frequently Asked Questions about P2652 Honda Code found.
Discuss the causes and fixes for P2652 Honda OBDII Code
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It happened on my 2011 Accord. 1 week after oil change by the dealer, this code showed up. Brought the car back to the dealer. They said it was a fault oil pressure switch. It was replaced under warranty.
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Code showed up but I am not getting the Rpm Limitations that everyone else is talking about. Do I have a different problem? My oil has 2500 miles on it, the oil life indicator says 70% life left. Oil level is smack in the middle of the range... is this thing so sensitive that middle is low and setting it off? Not sure if I should change the oil, solenoid or oil pressure sensor.
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