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

Quick Answer

The P2652 Honda diagnostic trouble code (DTC) indicates a problem with the Rocker Arm Oil Pressure Switch 'B' Circuit High Voltage. Common causes include Faulty Rocker Arm Oil Pressure Switch, Wiring issues or short circuits in the circuit, ECM malfunction. 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 Faulty Rocker Arm Oil Pressure Switch, Wiring issues or short circuits in the circuit, ECM malfunction.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 19, 2024
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Code P2652 Honda Description

The P2652 Honda diagnostic trouble code (DTC) indicates a problem with the Rocker Arm Oil Pressure Switch 'B' Circuit High Voltage. This switch is responsible for monitoring the oil pressure in the system and sending signals to the engine control module (ECM) to adjust the variable valve timing (VVT) system. When the oil pressure switch detects a high voltage signal, it can cause issues with the VVT system, affecting the engine's performance and efficiency.

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

Common Causes of P2652 Honda

  1. Faulty Rocker Arm Oil Pressure Switch
  2. Wiring issues or short circuits in the circuit
  3. ECM malfunction
  4. Low oil level or poor oil quality
  5. Engine overheating causing oil pressure fluctuations

Symptoms of P2652 Honda

  1. Check Engine Light illuminated on the dashboard
  2. Engine running rough or misfiring
  3. Reduced fuel efficiency
  4. Loss of power or acceleration
  5. Engine stalling or hesitation

How to Fix P2652 Honda

  1. Use a diagnostic scanner to retrieve the trouble codes and confirm P2652 Honda.
  2. Inspect the Rocker Arm Oil Pressure Switch 'B' Circuit for any visible damage or loose connections.
  3. Test the switch using a multimeter to check for proper voltage readings.
  4. Replace the faulty switch if necessary and clear the trouble codes.
  5. Test drive the vehicle to ensure the issue has been resolved and the Check Engine Light does not reappear.

Cost to Fix P2652 Honda

The cost of repairing the Rocker Arm Oil Pressure Switch 'B' Circuit High Voltage issue can vary depending on the specific cause of the problem. On average, the parts for this repair can range from $50 to $150, while labor costs can be between $100 to $200. Overall, the total repair cost may be around $150 to $350. It is recommended to consult with a qualified mechanic or auto repair shop to get an accurate estimate based on your vehicle's make and model.

What does this mean?

Tech Notes for P2652 Honda

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.

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.

Need more information about the P2652 Honda code?

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Need Help with the Code?

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Information for Specific Honda Models

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2652 Honda Code

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  • I changed the oil and filter, cleared the code and it is all set. Thank you.

    Reply to Comment

  • 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.

    Reply to Comment

  • What oil weight did you use? What year and model is your Honda?

    Reply to Comment