AutoCodes – Acura – P2648 Acura

P2648 Acura Code - Rocker Arm Oil Control Solenoid Circuit Low 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: P2648 Acura indicates Rocker Arm Oil Control Solenoid Circuit Low 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 6,411

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P2648 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 P2648 Acura - Rocker Arm Oil Control Solenoid Circuit Low Voltage - AutoCodes.com — P2648 Acura Code - Rocker Arm Oil Control Solenoid Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2648 Acura?

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 P2648 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 P2648 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.

Need more information about the P2648 Acura code?

Need more information on how to fix the P2648 Acura code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2648 Acura code diagnosed by a professional: Find a repair shop in your area

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 P2648 Acura Code

1. What are the common symptoms of OBDII code P2648 in an Acura?

- Common symptoms include rough idling, poor engine performance, and illuminated Check Engine Light.

2. What can cause the Rocker Arm Oil Control Solenoid Circuit Low Voltage code in an Acura?

- Possible causes include a faulty oil control solenoid, wiring issues, low engine oil level, or a failed engine oil pressure switch.

3. How can I diagnose the P2648 code in my Acura?

- You can diagnose this code by performing a visual inspection of the solenoid and its wiring, testing the solenoid for proper operation, and checking the oil pressure.

4. Can I drive my Acura with the P2648 code?

- It is not recommended to drive your Acura with the P2648 code as it can lead to engine damage or poor performance.

5. How do I repair the Rocker Arm Oil Control Solenoid Circuit Low Voltage issue in my Acura?

- Repair options include replacing the faulty oil control solenoid, repairing any damaged wiring, ensuring proper engine oil levels, and addressing any oil pressure issues.

6. Will resetting the Check Engine Light fix the P2648 code in my Acura?

- Resetting the Check Engine Light may temporarily clear the code, but it will reappear if the underlying issue is not addressed.

7. Can a DIY enthusiast fix the P2648 code in an Acura?

- Depending on your skill level and access to tools, a DIY enthusiast may be able to address the P2648 code by following repair guides and proper diagnostic procedures.

8. How much does it cost to repair the P2648 code at a mechanic for an Acura?

- The cost of repairing the P2648 code at a mechanic can vary depending on the root cause of the issue, but it typically ranges from $200 to $500.

9. Is the P2648 code common in Acura vehicles?

- The P2648 code related to the Rocker Arm Oil Control Solenoid Circuit Low Voltage is relatively common in Acura vehicles equipped with this system.

10. How often should I check the oil control solenoid in my Acura to prevent the P2648 code?

- It is recommended to include the oil control solenoid in your regular vehicle maintenance schedule and check it during routine oil changes to help prevent issues leading to the P2648 code.