P2649 Acura 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 Acura 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.
Code P2649 Acura Description
What are the Possible Causes of the DTC P2649 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 P2649 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 P2649 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 P2649 Acura code?
Need more information on how to fix the P2649 Acura code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P2649 Acura code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P2649 Acura Code
1. What are common symptoms of OBDII code P2649 in an Acura related to the Rocker Arm Oil Control Solenoid Circuit High Voltage?
Common symptoms include rough idling, decreased engine performance, and illuminated Check Engine Light.
2. What are some possible causes of the P2649 code in an Acura?
Potential causes may include a faulty rocker arm oil control solenoid, damaged wiring or connectors in the circuit, low oil pressure, or a malfunctioning engine control module.
3. How can I diagnose the Rocker Arm Oil Control Solenoid Circuit High Voltage issue in my Acura?
Diagnosis typically involves using an OBDII scanner to retrieve the trouble code, inspecting the wiring and connections related to the solenoid, and testing the solenoid itself for proper operation.
4. Can I drive my Acura with the P2649 code present?
It is not recommended to drive your vehicle with the P2649 code unaddressed, as it can lead to further damage and decreased engine performance.
5. Is it safe to continue driving my Acura if I have already cleared the P2649 trouble code?
If the code was cleared but the underlying issue was not fixed, it is still not advisable to drive the vehicle as the problem may resurface and potentially cause more serious issues.
6. How much does it typically cost to repair the Rocker Arm Oil Control Solenoid Circuit High Voltage problem in an Acura?
The cost of repair can vary depending on the exact cause of the issue, but it may range from $200 to $500 including parts and labor.
7. Can I replace the rocker arm oil control solenoid in my Acura myself?
Replacing the solenoid can be a DIY project for those with mechanical experience and the right tools. However, if you are unsure, it is recommended to seek professional assistance.
8. Will the P2649 code disappear on its own over time?
The code will not disappear on its own. It needs to be properly diagnosed and repaired to clear the Check Engine Light and resolve the issue.
9. Is the Rocker Arm Oil Control Solenoid Circuit High Voltage problem a common issue in Acura vehicles?
Yes, this problem is relatively common in Acura vehicles, particularly in models equipped with VTEC engines.
10. Can ignoring the P2649 code cause damage to my Acura's engine?
Continued driving with the P2649 code can potentially cause damage to the engine, so it is important to address the issue promptly to prevent further complications.
Discuss the causes and fixes for P2649 Acura OBDII Code
-
2005 acura tl throwing code p2649, p0304, p0104.
Recent engine work- camshaft and cranckshaft sensor replaced. could this be the cause of any new issues? -
It's possible, but not likely. Check the engine oil level and condition. Low or dirty engine oil could cause this problem.
-
what about the vtec? Had a guy reset the codes and he said since it came right back on that it was a hard code and I would have to replace the solenoid
-
I got the same code I just bought the car from a dealer , and I pushed it alittle check engine light came on for that Code , I took it to the mechanic and he did the steps you show above , and he erased the code and now im pushing it the same way and it dosent pop up. Should I keep running it too see if they problem is fixed or ?? What ?
-
Yes, if there no other symptoms you can keep driving your vehicle without any problems.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
