Question about 2008 Honda Pilot

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What do I need to do to fix this?

3.6L V6 engine light code PZ647:rocker arm actuator stuck open. Is there anyone that can describe what needs to be done to fix this problem.

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  • Contributor
  • 25 Answers

Common problem will be sludge build up blocking the solenoid. Normally rectified by running a engine flush and then change the oil then have a garage clear the code. If the solenoid is completely blocked, you will have to replace it.

Posted on Jun 09, 2014

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Posted on Jan 02, 2017

ahmed_mmm
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SOURCE: Why is my check engine light on 05 civic

the actuator is faulty and you could clean it, reset ECU error and check again

Posted on Sep 17, 2009

  • 1 Answer

SOURCE: Code P2646

Change your oil

Posted on Dec 15, 2009

  • 236 Answers

SOURCE: Hond engine code P2646 Rocker Arm Bank 1 Stuck Off

sounds like the timing belt jumped

Posted on Dec 31, 2009

honeymokey
  • 3113 Answers

SOURCE: 2007 Honda Pilot service code

Could be a bad oil pressure sensor on bank one or low oil level ,or incorrect oil and filter.

Posted on Aug 13, 2011

cansmo
  • 2431 Answers

SOURCE: P 2647"A" Rocker Arm Actuator

Your going to need a air pressure regulator or better yet if the ECM found fault price it and replace it

  1. Start the engine, and let it run for 5 minutes, then turn the ignition switch to LOCK (0).
  2. Remove the cylinder head cover.
  3. Set the No. 1 piston at top dead center (TDC).
  4. Move the intake secondary rocker arm A for the No. 1 cylinder. The secondary rocker arm A should move independently of the secondary rocker arm B.
    1. If the intake secondary rocker arm A moves freely, go to step 5.
    2. If the intake secondary rocker arm A does not move, remove the secondary rocker arms as an assembly, then check that the pistons in the secondary rocker arms move smoothly. If any rocker arm needs replacing, replace the secondary rocker arms as an assembly, then retest.
    3. Repeat step 4 on the remaining intake secondary rocker arms with each piston at TDC. When all the secondary rocker arms pass the test, go to step 6.
    4. Check that the air pressure on the shop air compressor gauge indicates over 400 kPa (4.0 kgf/cm2, 57 psi).
    5. Inspect the valve clearance.
    6. Install a 10 x 1.0 mm adapter to the inspection hole, then connect the air pressure regulator
  5. With the specified air pressure applied, move the intake secondary rocker arm A for the No. 1 cylinder. The secondary rocker arm A and secondary rocker arm B should move together. If the intake secondary rocker arm A does not move, remove the secondary rocker arms as an assembly, and check that the pistons in the secondary rocker arms move smoothly. If any rocker arm needs replacing, replace the secondary rocker arms as an assembly, then retest.
  6. cansmo_32.gif
cansmo_33.gif

Posted on Aug 23, 2011

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1 Answer

2003 Honda Accord engine code p2646 engine will not rotate 360 but stops.when turned in reverse by hand starter will turn then get stuck and will not turn forward. What is possible causes? Locked?


code p 2646 refers to rocker arm actuator A bank 1---performance problem or actuator stuck off=== causes wiring--- rocker arm actuator
discuss the problem with a service dealer shop or an accredited service shop that has experience on your make of vehicle
with rocker arm problems , to stop rotation it may be bottoming out on a valve spring and not letting the cam shaft turn .
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1 Answer

P 2647"A" Rocker Arm Actuator


Your going to need a air pressure regulator or better yet if the ECM found fault price it and replace it
  1. Start the engine, and let it run for 5 minutes, then turn the ignition switch to LOCK (0).
  2. Remove the cylinder head cover.
  3. Set the No. 1 piston at top dead center (TDC).
  4. Move the intake secondary rocker arm A for the No. 1 cylinder. The secondary rocker arm A should move independently of the secondary rocker arm B.
    1. If the intake secondary rocker arm A moves freely, go to step 5.
    2. If the intake secondary rocker arm A does not move, remove the secondary rocker arms as an assembly, then check that the pistons in the secondary rocker arms move smoothly. If any rocker arm needs replacing, replace the secondary rocker arms as an assembly, then retest.
    3. Repeat step 4 on the remaining intake secondary rocker arms with each piston at TDC. When all the secondary rocker arms pass the test, go to step 6.
    4. Check that the air pressure on the shop air compressor gauge indicates over 400 kPa (4.0 kgf/cm2, 57 psi).
    5. Inspect the valve clearance.
    6. Install a 10 x 1.0 mm adapter to the inspection hole, then connect the air pressure regulator
  5. With the specified air pressure applied, move the intake secondary rocker arm A for the No. 1 cylinder. The secondary rocker arm A and secondary rocker arm B should move together. If the intake secondary rocker arm A does not move, remove the secondary rocker arms as an assembly, and check that the pistons in the secondary rocker arms move smoothly. If any rocker arm needs replacing, replace the secondary rocker arms as an assembly, then retest.
  6. cansmo_32.gif
cansmo_33.gif

Aug 23, 2011 | Honda Accord Cars & Trucks

1 Answer

Check engine light on on 2005 honda accord coupe. 4cylinder. code is p2647 said trouble shooting do all repairs on vehicles but do not know that code.


p2647 is rocker arm actuator A- bank 1 stuck on--- to fix it should be the VTEC oil pressure switch. That switch will be on the cylinder head. Towards the windshield and passenger's side (I think).

Go to www . hondapartsdeals . com {remove the spaces when typing}

Go to parts, enter your car's info. System: Engine Component Vtec Oil control valve. That diagram should help a lot.

Good Luck.

Jan 27, 2011 | 2005 Honda Accord

2 Answers

Why is my check engine light on 05 civic


the actuator is faulty and you could clean it, reset ECU error and check again

Sep 16, 2009 | 2005 Honda Civic

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