Engine-Codes - Honda - P2652 Honda

P2652 Honda Code - Rocker Arm Oil Pressure Switch 'B' Circuit High Voltage

- Code Popularity: 44,672 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
ChatAC AutoCodes.com AI Chat

What are the Possible Causes of the DTC P2652 Honda?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other 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

Code 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.

⚠ Does your Honda have Safety Recalls? → Check here

How to Fix the DTC P2652 Honda?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Search for P2652 Honda Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P2652 Honda code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

When is the Code Detected?

When a malfunction is detected during the first drive cycle, a Pending DTC is stored in the Powertrain Control Module (PCM) memory. If the malfunction returns in the next (second) drive cycle, the MIL comes on and a Confirmed DTC and the freeze data are stored.

What are Code Possible Symptoms?

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

What Does the P2652 Honda Code Mean?

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. The PCM monitors oil pressure in the hydraulic circuit of the VTEC mechanism using rocker arm oil pressure switch B downstream of rocker arm oil control solenoid B. If there is a difference between the oil pressure condition in the hydraulic circuit determined by the PCM command and the oil pressure condition determined by the status of rocker arm oil pressure switch B, the system is considered faulty, and a DTC is stored.

P2652 Honda Code - Rocker Arm Oil Pressure Switch 'B' Circuit High Voltage

Need more Information on the Code?

Need more information on how to fix the P2652 Honda code? Get Access to Factory Service Manuals

Information for Specific Honda Models

Need Help with the Code?

Get the P2652 Honda code diagnosed by a professional: Find a repair shop in your area