AutoCodes – Honda – P2647 2010 Honda Accord

P2647 2010 Honda Accord Code - Rocker Arm Oil Pressure Switch Circuit High Voltage

Quick Answer

The Variable Valve Timing and Lift Electronic Control (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. Common causes include 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. 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: P2647 2010 Honda Accord indicates Rocker Arm Oil Pressure Switch Circuit High Voltage.
Common causes: Common causes include 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.
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.

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Code Popularity 9,182

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jan 24, 2019

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2647 2010 Honda Accord Description

The Variable Valve Timing and Lift Electronic Control (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 the Diagnostic Trouble Code (DTC) is stored.

OBDII Code P2647 2010 Honda Accord - Rocker Arm Oil Pressure Switch Circuit High Voltage - AutoCodes.com — P2647 2010 Honda Accord Code - Rocker Arm Oil Pressure Switch Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P2647 2010 Honda Accord?

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

How to Fix the DTC P2647 2010 Honda Accord?

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2647 2010 Honda Accord 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 P2647 2010 Honda Accord code?

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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 P2647 2010 Honda Accord Code

1. What are the common symptoms of OBDII code P2647 in a 2010 Honda Accord?

- Common symptoms include rough idling, poor engine performance, decreased fuel efficiency, and the illumination of the check engine light.

2. What does the OBDII code P2647 "Rocker Arm Oil Pressure Switch Circuit High Voltage" mean for a 2010 Honda Accord?

- This code indicates that the oil pressure switch circuit for the rocker arm control system is detecting a high voltage condition.

3. What are the possible causes of OBDII code P2647 in a 2010 Honda Accord?

- Possible causes include a faulty rocker arm oil pressure switch, wiring issues, low engine oil level, oil blockages, or a malfunctioning engine control module (ECM).

4. How can I diagnose the cause of OBDII code P2647 in my 2010 Honda Accord?

- Diagnose the code by checking the oil level, inspecting the rocker arm oil pressure switch and its wiring for any damage, and using a scan tool to monitor oil pressure sensor readings.

5. Can I continue driving my 2010 Honda Accord with OBDII code P2647?

- It is not recommended to continue driving with this code as it can lead to engine performance issues and potential damage if not addressed promptly.

6. How can I repair OBDII code P2647 in my 2010 Honda Accord?

- Repair options may include replacing the rocker arm oil pressure switch, repairing any damaged wiring, ensuring proper engine oil level, and clearing the code with a scan tool.

7. Is it possible to reset OBDII code P2647 in a 2010 Honda Accord without fixing the issue?

- While you can clear the code with a scan tool, it is important to address the underlying problem causing the high voltage condition to prevent further issues.

8. Will OBDII code P2647 affect the overall reliability of my 2010 Honda Accord?

- Ignoring this code can potentially affect the reliability of your vehicle due to possible engine performance issues and long-term damage if left unresolved.

9. How much does it typically cost to fix OBDII code P2647 in a 2010 Honda Accord?

- The cost of fixing this code can vary depending on the specific cause, but it may range from around $100 to $300 for parts and labor.

10. Are there any preventive maintenance tips to avoid OBDII code P2647 in a 2010 Honda Accord?

- Regularly checking and maintaining proper engine oil levels, staying up to date on oil changes, and addressing any oil pressure issues promptly can help prevent this code from occurring.