AutoCodes – Honda – P2649 2008 Honda Accord

P2649 2008 Honda Accord Code - Rocker Arm Oil Control Solenoid 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 Solenoid Valve, VTEC/Rocker Arm Solenoid Valve 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: P2649 2008 Honda Accord indicates Rocker Arm Oil Control Solenoid 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 Solenoid Valve, VTEC/Rocker Arm Solenoid Valve 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 17,067

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
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2649 2008 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 P2649 2008 Honda Accord - Rocker Arm Oil Control Solenoid Circuit High Voltage - AutoCodes.com — P2649 2008 Honda Accord Code - Rocker Arm Oil Control Solenoid Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P2649 2008 Honda Accord?

Check engine oil level, oil condition and pressure
Faulty Variable Valve Timing and Lift Electronic Control (VTEC) / Rocker Arm Solenoid Valve
VTEC/Rocker Arm Solenoid Valve harness is open or shorted
VTEC/Rocker Arm Solenoid Valve circuit poor electrical connection

How to Fix the DTC P2649 2008 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 P2649 2008 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 P2649 2008 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 P2649 2008 Honda Accord Code

1. What are the common symptoms of OBDII code P2649 on a 2008 Honda Accord?

- Common symptoms include rough idling, decreased engine performance, and illuminated check engine light.

2. What does the OBDII code P2649 indicating "Rocker Arm Oil Control Solenoid Circuit High Voltage" mean on a 2008 Honda Accord?

- This code indicates that the powertrain control module (PCM) has detected high voltage in the circuit related to the rocker arm oil control solenoid.

3. What are the possible causes of OBDII code P2649 on a 2008 Honda Accord?

- Possible causes include a faulty rocker arm oil control solenoid, damaged wiring or connectors in the solenoid circuit, low engine oil level, or a malfunctioning PCM.

4. How can I diagnose the issue related to OBDII code P2649 on my 2008 Honda Accord?

- Diagnose the issue by inspecting the rocker arm oil control solenoid and its wiring, checking the engine oil level, and using a scan tool to monitor the solenoid's operation.

5. Can I drive my 2008 Honda Accord with OBDII code P2649 present?

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

6. How can I repair OBDII code P2649 on my 2008 Honda Accord?

- Repair may involve replacing the rocker arm oil control solenoid, repairing any damaged wiring or connectors, ensuring proper engine oil level, and clearing the trouble code.

7. Is it safe to clear the OBDII code P2649 without addressing the underlying issue on a 2008 Honda Accord?

- Clearing the code without addressing the underlying issue may temporarily turn off the check engine light, but the problem will likely reoccur, affecting engine performance.

8. Can a DIY enthusiast fix OBDII code P2649 on a 2008 Honda Accord?

- Depending on their skill level, a DIY enthusiast may be able to address this code by following repair guides, but it's recommended to consult a professional for accurate diagnosis and repair.

9. How much does it typically cost to repair OBDII code P2649 on a 2008 Honda Accord?

- The cost of repairing this code can vary depending on the root cause, but it may involve parts and labor expenses ranging from $100 to $500 or more.

10. What are the long-term effects of ignoring OBDII code P2649 on a 2008 Honda Accord?

- Ignoring this code can lead to continued engine performance issues, potential damage to engine components, and increased fuel consumption over time.