P2647 honda civic

P2647 honda civic DEFAULT

P2647 code definition

A Rocker Arm Actuator System Stuck on Bank 1

What the P2647 code means

This trouble code indicates that the powertrain control module has detected a malfunction in the intake camshaft rocker arm actuator system (A). This code is usually found in vehicles that have variable valve timing.

What are the causes of the P2647 code?

Some of the potential causes of this trouble code would include:

  • The engine timing may be out of specification

  • A faulty oil control valve or restricted orifice may be a factor

  • Damaged wiring or connector that is associated with the oil control valve may be present

  • Low oil pressure / Low engine oil may be causing this issue

  • A faulty powertrain control module may exist

What are the symptoms of the P2647 code?

Symptoms of this trouble code that the driver may experience would include:

  • Hesitation or stumble upon acceleration.
  • Poor engine performance overall
  • A check engine light

How does a mechanic diagnose the P2647 code?

The first thing a mechanic would do to diagnose this issue would be to check the engine oil level and check for a low oil pressure light. After that the mechanic would ensure that the engine timing is correct using the marks supplied by the manufacturer. If all timing marks appear to be correct, the mechanic would then test the variable valve timing parts to ensure proper function. Next, the mechanic would test all circuitry related to the variable valve timing system. Finally, the mechanic would use a high tech scan tool to test the powertrain control module. If any parts turn out to be faulty during this diagnosis, they would need to be replaced before moving to the next step. The mechanic would likely explain to the customer that multiple parts may need to be replaced and multiple diagnostic tests may need to be carried out.

Common mistakes when diagnosing the P2647 code

It is very easy to replace other parts in error when low or wrong engine oil is the actual cause of this issue. It is very important that checking the engine oil is the first step in the diagnostic process of this trouble code.

How serious is the P2647 code?

This trouble code would be considered serious regardless of the cause but more serious if a timing issue is present. This can cause severe engine damage especially in interference engines. It is important to have this trouble code diagnosed and repaired as soon as possible.

What repairs can fix the P2647 code?

Repairs that can resolve the issues that are caused by this trouble code would include:

It is very important that the vehicle does not get driven much with this trouble code stored as severe engine damage may result. If this issue is not diagnosed sooner rather than later, the repair costs could increase significantly.

Need help with a P2647 code?

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Sours: https://www.yourmechanic.com/article/p2647-obd-ii-trouble-code-system-too-rich-bank-1-by-andrew-quinn

06 Civic 1.8 LX P2647

Hi Eric, thanks for the info….

I was out working at it today and unfortunately, I didn’t get anything definitive. I took the engine oil pressure sensor out and gave it a good cleaning. I re-installed, cleared the code and got the same code right away. I didn’t even start the car and the code popped up again.

So…thinking about the code description “rocker arm actuator stuck on”. How could the VTech actuating system be stuck on with no oil pressure? Don’t forget, the car’s not running and it’s setting the code again. Seems to me that the oil pressure sensor is “sensing” oil pressure even when the engine is off. Any residual pressure would have been relieved when I removed the sensor. Kinda makes you think it’s the sensor at fault. Of course, I could be wrong because maybe the ECU isn’t forgetting the code or something screwy like that.

I also disconnected the Vtech solenoid and manually energized it…..big solid clicks. That’s a good sign I suppose!

I called Honda and the engine oil pressure sensor is 170 bucks. The parts guy alerted me to the fact that the whole solenoid valve (oil press sensor, gasket and new filter included) is 170 bucks……might as well replace the whole thing.

Still though, I wish there was some way to figure out how that sensor works. I would love some proof before I blow 200 bucks.

By the way….if anyone runs into this and has to take that Vtech oil pressure sensor out, a 1-1/8″ deep socket will do it. Not sure what the Metric equivalent is and no doubt 1-1/8″ is not the correct one but it fits pretty snug. Lucky I had one from my days of working on aircraft. I had nothing near it in metric. Probably a 28mm or something.

Sours: https://www.ericthecarguy.com/forums/topic/06-civic-1-8-lx-p2647/
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P2647 HONDA Code - Rocker Arm Oil Pressure Switch Circuit High Voltage

AutoCodes - Honda - P2647 HONDA

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What does this mean?

|P2647 HONDA code possible causes

  • 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 do I fix the P2647 HONDA code?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

What does this mean?

|P2647 HONDA code tech notes

The most common problem that can set the P2652 code is the engine oil. Before replacing any parts change the engine oil with the factory recommend oil weight.

There is a Factory Service Bulletin for the following Honda Models

2003-2012 Honda Accord L4
2002-2005 Honda Civic Si
2002-2009 Honda CR-V
2011 Honda CR-Z
2003-2011 Honda Element
2007-2011 Honda Fit

The factory bulletin suggests that replacing the VTEC oil pressure switch (P/N 37250-PNE-G01, H/C 6737217) take care of the problem.





User Submitted Video

|Cost of diagnosing the P2647 HONDA code

Labor: 1.0

The cost of diagnosing the P2647 HONDA code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are P2647 HONDA code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|P2647 HONDA code description

The 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 a DTC is stored.
OBDII Code P2647 Honda - Rocker Arm Oil Pressure Switch Circuit High Voltage - AutoCodes.com

|Need more information with the P2647 HONDA code?

Need more information on how to fix the P2647 HONDA code?
Get Access to Factory Service Manuals

|P2647 HONDA code information for specific Honda models

|P2647 HONDA code comments

Help us improve AutoCodes.com. Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the P2647 Honda code? Have you replaced any parts?
Any information is appreciated. Thanks

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Repair Importance Level:3

 

1=Low 2=Medium 3=High What is this?

Repair Difficulty Level:3

 

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Sours: https://www.autocodes.com/p2647_honda.html
2008 Honda Civic Si V-Tec Solenoid Replacement [Code P2647]

Out of the blue my Honda coughed and bucked whenever I tried to accelerate above 2700 rpm! The check-engine-light came on and gave a P2647 error code. This post walks step-by-step through the easy fix. I hope you find this helpful!

Background

The vehicle I am working on here is a 2004 Honda Accord (4-cyl). This repair also applies to 2002, 2003, 2004, 2005, 2006, and 2007 Honda Accords, as well as other Honda’s using the i-VTEC engine (Honda Element, Honda Civic, Honda CRV), with perhaps some variations depending on the vehicle. This issue can also produce a P2646 error code.

If you purchase something through one of our affiliate links we may earn a commission, at no extra cost to you.

I was heading off to work one day in the 2004 Honda Accord, and about a mile from my house I tried to accelerate. As soon as the tachometer touched 2700 rpm, the car bucked and the check engine light (CEL) came on!

00-check-engine-light-honda-accord

Luckily I had my trusty engine code reader handy, so I pulled over and read the error code.

00-error-code-2647-honda

The error was P2647. A related error is P2646.

  • P2647 – Rocker Arm Actuator Control System Stuck On
  • P2646 – Rocker Arm Actuator System Performance/Stuck Off Bank 1

These errors relate to the VTEC solenoid. This is a really interesting mechanism! Read more details on the VTEC system.

To summarize, these cars have a variable timing system, meaning that at higher RPMs and engine loading, the computer throws a switch and changes the valve timing in order to give you better acceleration. The VTEC solenoid is that switch; it diverts oil from the low-lift cam lobe to the high-lift cam lobe.

If the VTEC doesn’t get the signal, is clogged, or leaks then problems occur. The vehicle goes into “limp mode,” meaning that you cannot accelerate beyond about 2700 RPM or so.

Note 1: One thing you should check before jumping into a repair is your oil level. Sometimes low oil can cause issues with the VTEC system, so be sure to check your oil level first. If the oil is dirty or hasn’t been changed in a while, try changing the oil as well.

Note 2: I have also had success performing an engine flush to clear the P2647 code. It is a relatively inexpensive method to help clear sludge from your engine and has been known to eliminate the P2647 issue.

Note 3: Are you using the correct and recommended oil for your Honda Accord? Using oil that is too thick or too thin can cause issues with the VTEC system which relies on oil passing through small passages! Use a high quality synthetic oil to reduce or eliminate the P2647 issues. I recommend Mobil1 0W-20 or Mobil1 5W-20 High-Mileage for Honda Accords.

The following are common symptoms:

  • No signal getting to the VTEC – Vehicle feels ‘gutless’ at high RPM
  • Clogged VTEC – Vehicle stutters or stalls at lower RPMs, esp when engine is warm
  • Leaking VTEC – Vehicle bucks/jerks when accelerating above about 2500-3000 RPM

The problem I had was the last one. The following is the repair I did to fix the problem.

Tools and supplies used:

VTEC Solenoids for Other Vehicles:

Instructions for Replacing the VTEC Solenoid

Here is the aftermarket VTEC solenoid I purchased and installed. It came with a new gasket as well.

Depending on your situation, it is possible that only the gasket is shot (completely flattened, cracked, leaking, etc…). If this is the case for you, you might try just replacing the gasket first to see if that fixes the problem. The following instructions would still mostly apply.

01-VTEC-Solenoid

Since the solenoid has electrical connections, it is a good idea to disconnect the negative battery terminal so nothing gets shorted out.

02-Remove-Negative-Battery-Terminal

Mine uses a 10mm socket to remove.

03-Negative-battery-cable-removed

The VTEC solenoid is located at the back of the engine on the left side. In the picture below, it is about 8 inches behind the orange oil dipstick.

04-honda-accord-engine-bay

Here is the view from behind. You can see the VTEC near the center of this image with a bunch of wires going to it.

05-location-of-vtec-solenoid-honda-accord

Here is a better view.

06-old-vtec-solenoid

To remove the unit, we will unplug the 2 connectors at the top, then remove the three (3) 10mm bolts shown below.

Note: notice how the solenoid is all oily, particularly at the bottom. This is a good clue and suggests that it was leaking oil.

07-vtec-solenoid-remove-3-bolts-10mm

I recommend disconnecting the electrical connections first. At the top of the solenoid, press the plastic tab on the connector, then pull up to release the first connector.

08-remove-electrical-connection-vtec

Do the same for the next connector.

09-remove-electrical-connection-vtec-honda

The wiring harness is attached to the solenoid heat shield with a plastic zip-tie plug connector. I used a flat-bladed screwdriver to wedge it out of its hole. It slightly damaged the plastic connector in the process, but not too bad.

10-pry-out-plastic-connector

Next, use a 10mm socket to remove the 3 bolts holding the VTEC solenoid in place. I also used a short pipe as a cheater bar (not shown) to get these loose, as they were fairly tight; it can be helpful to avoid knurled knuckles…

Note: When the solenoid is removed, about a cup of oil will leak out. Put a catch pan of some sort underneath it so that the oil is contained.

11--remove-3-bolts-10mm12-bolt-removed

After the 3 bolts are removed, give the VTEC solenoid a twist, and it will come off. Some oil will drain out, so be ready for that with a drain pan underneath.

13-VTEC-solenoid-removed

Here is the old and new ones, side by side.

14-old-vs-new-VTEC-solenoid

Notice how the gasket on the old one is completely compressed.

15-old-solenoid-gasket-comparison

Here I picked at it and it just cracked away. It was due for replacement. Also, notice that the screen is pretty clean, so I don’t think clogging was my problem.

Here’s the link if you want to buy just the gasket. (The filter screen comes with the gasket.)

16-solenoid-gasket-crumbling

Re-use the old bolts. Fit them into the new solenoid body.

17-reuse-old-bolts

Here is a view of the mating surface. Use a clean rag to wipe off any residue.

18-vtec-solenoid-mating-surface

Here is the new VTEC solenoid with the bolts installed and ready to be put in.

19-new-vtec-solenoid-honda-accord

Line up the solenoid and the bolts.

20-install-new-vtec-solenoid-honda

Get each bolt started and snug it up a bit with the 10mm socket.

DON’T GO OVERBOARD on tightening these bolts! They can strip out…

We will torque these in a subsequent step, and it is surprising how little these need to be snugged up in order to seal, but not crush, the gasket.

21-tighten-bolts-vtec

Next, use a torque wrench to tighten the bolts to 8.7 ft-lbs (104 in-lbs). Go from one bolt to the next, tighten each one a little at a time, in order to get an even seal for the gasket.

22-torque-bolts-to-8-7-ft-lbs

Next, fit the plastic connector for the wiring harness into the hole in the heat shield of the new solenoid.

23-reinstall-plastic-clip

Plug in the electrical connections.

A common problem with these electrical connections is that due to the way they are oriented, it is easy for water to get into the connector and just sit there, causing corrosion build up. If your electrical connections were corroded, put some dielectric grease into the plug before plugging in the connectors. This will help to keep water out in the future.

Make sure to press them in far enough until you hear or feel a small clip indicating that it is fully seated.

24-reinsert-electrical-plug

Repeat for the other electrical connector. They have different shapes, so it is difficult to get them in the wrong spot!

25-reinstall-electrical-plug-vtec

Here is the new VTEC solenoid installed.

26-new-vtec-solenoid-installed

Once everything is put together, then go ahead and re-connect the negative battery terminal and snug it up.

27-reconnect-negative-battery-cable

The final step is to check the oil level and replace any oil that may have leaked out in the process.

I hope this helped you out! If so, what were the symptoms you were experiencing? Let us know in the comments section below.

Tools and supplies used:

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Sours: https://practicalmechanic.com/2019/10/19/easy-fix-for-p2647-error-code-bucking-and-jerking-honda-accord/

Honda civic p2647

P2647 HONDA Code - Rocker Arm Oil Pressure Switch Circuit High Voltage

Engine-Codes - Honda - P2647 HONDA

Repair Importance Level: 3/3

Repair Difficulty Level: 3/3  What is this?

What does this mean?

|P2647 HONDA code possible causes

  • 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 is the P2647 HONDA code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

What does this mean?

|P2647 HONDA code tech notes

The most common problem that can set the P2652 code is the engine oil. Before replacing any parts change the engine oil with the factory recommend oil weight.

There is a Factory Service Bulletin for the following Honda Models

2003-2012 Honda Accord L4
2002-2005 Honda Civic Si
2002-2009 Honda CR-V
2011 Honda CR-Z
2003-2011 Honda Element
2007-2011 Honda Fit

The factory bulletin suggests that replacing the VTEC oil pressure switch (P/N 37250-PNE-G01, H/C 6737217) take care of the problem.



User Submitted Video

|What is the cost to diagnose the P2647 HONDA code

Labor: 1.0

The cost to diagnose the P2647 HONDA code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are P2647 HONDA code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|What is P2647 HONDA code meaning?

The 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 a DTC is stored.

OBDII Code P2647 HONDA - Rocker Arm Oil Pressure Switch Circuit High Voltage - Engine-Codes.com

|Need more information with the P2647 HONDA code?

Need more information on how to fix the P2647 HONDA code?
Get Access to Factory Service Manuals

|P2647 HONDA code information for specific Honda models

Repair Importance Level:3

 

1=Low 2=Medium 3=High What is this?

Repair Difficulty Level:3

 

1=Easy 2=Moderate 3=Hard What is this?

Browse Codes for Specific Model-Year

Sours: https://www.engine-codes.com/p2647_honda.html
VTEC Repair P2647 Or 2646 (Pressure Circuit Voltage High Or Low)

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Catching a stream of urine with her open mouth, to drink it all down.

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