AutoCodes – Acura – P2647 Acura

P2647 Acura 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 Acura 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 37,714

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

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 Acura 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 Acura - Rocker Arm Oil Pressure Switch Circuit High Voltage - AutoCodes.com — P2647 Acura Code - Rocker Arm Oil Pressure Switch Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P2647 Acura?

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 Acura?

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 Acura 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.

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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 Acura Code

1. What are the common symptoms of OBDII code P2647 in an Acura related to the Rocker Arm Oil Pressure Switch Circuit High Voltage?

- Common symptoms include rough idling, engine misfires, decreased fuel efficiency, and the Check Engine light illuminating.

2. What are the possible causes of the P2647 code in an Acura's Rocker Arm Oil Pressure Switch Circuit High Voltage?

- Potential causes include a faulty oil pressure switch, wiring issues, low engine oil level, or a malfunctioning Engine Control Module (ECM).

3. How can I diagnose the P2647 code in my Acura related to the Rocker Arm Oil Pressure Switch Circuit High Voltage?

- Diagnosis involves using an OBDII scanner to read the code, inspecting the oil pressure switch and its wiring, checking the engine oil level, and testing the ECM.

4. Can I still drive my Acura with the P2647 code related to the Rocker Arm Oil Pressure Switch Circuit High Voltage?

- It is not recommended to drive your vehicle with this code present, as it can lead to engine performance issues and potential long-term damage.

5. How serious is the P2647 code in an Acura's Rocker Arm Oil Pressure Switch Circuit High Voltage?

- While the code itself may not cause immediate harm, ignoring it can lead to engine problems and decreased performance over time.

6. What is the typical repair procedure for the P2647 code in an Acura's Rocker Arm Oil Pressure Switch Circuit High Voltage?

- The repair typically involves replacing the faulty oil pressure switch, repairing any damaged wiring, ensuring proper engine oil levels, and resetting the ECM.

7. Can a DIY enthusiast fix the P2647 code related to the Rocker Arm Oil Pressure Switch Circuit High Voltage in an Acura?

- Depending on your skill level and access to tools, you may be able to replace the oil pressure switch and check the wiring yourself. However, complex issues may require professional assistance.

8. How much does it cost to repair the P2647 code in an Acura's Rocker Arm Oil Pressure Switch Circuit High Voltage?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

9. Will resetting the Check Engine light resolve the P2647 code issue in an Acura?

- Resetting the light may temporarily remove the indicator, but it will not fix the underlying problem causing the P2647 code related to the Rocker Arm Oil Pressure Switch Circuit High Voltage.

10. How can I prevent the recurrence of the P2647 code in my Acura's Rocker Arm Oil Pressure Switch Circuit High Voltage?

- Regularly maintaining your vehicle by checking engine oil levels, addressing any leaks promptly, and ensuring proper oil pressure switch function can help prevent the code from reappearing.