When the control solenoid is turned 'OFF', the oil pressure is dumped and the oil pressure switch signal will go low. My 2014 Impala LT 2.5L has a P2646 code. Oil flows through the Rocker Arm Actuator to the variable valve timing system to adjust the engine's valve timing. The ECM energizes solenoid (56) when the ECM requires intake valves (61) to remain open. In vehicles equipped with VTEC, the rocker arm control solenoid supplies hydraulic pressure to the variable timing and lift mechanism. It operates the intake valves only, commands high or low valve lift and is attached to the valve cover just behind the oil filler cap. HY-SPEED 718-202 Intake and Exhaust Camshaft Position Actuator Timing Solenoid Control Valve Compatible with Cadillac ATS CTS Chevy Colorado Camaro Malibu Impala Regal Envision GMC Acadia Canyon 2 PCS Intake & Exhaust Camshaft Position Actuator Solenoid Control Valve 12655420 12655421 917-215 917-216 for GM Chevy Cobalt Malibu G5 G6 HHR Buick … The camshaft has 3 lobes for each intake valve. There is a known issue with the rocker arm assembly in the Dodge 3.5 and 4.0 motors and finding complete rocker arm replacements can be difficult depending on the year. The variable valve timing (VVT) system is used to improve engine's performance, fuel economy or emissions. The inner lobe is for low lift and the 2 outer lobes are for high lift. Onsite Associates Program . I cleared st again, it stays off for 2 … read more P16D0 Description The rocker arm actuator system enables the Engine Control Module to change the camshaft lift and duration while the engine is operating.The camshaft has 3 lobes for each intake valve. Take the AutoCodes.com automotive tests and turbo-charge your car repair knowledge. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Posted and Edit by AutoCodes.com 01-10-2018, 5 Most Common Reasons for Check Engine Light, Faulty Intake Rocker Arm Solenoid Valve 1, Intake Rocker Arm Solenoid Valve 1 harness is open or shorted, Intake Rocker Arm Solenoid Valve 1 circuit poor electrical connection, Engine Light ON (or Service Engine Soon Warning Light). The part is a rocker arm (part# 12633613) and is not available and there is no estimated time per GM when it will be available again. The Rocker Arm Control Solenoid supplies hydraulic pressure to the Variable Timing mechanism. ⦠The Engine Control Module (ECM) commands the Rocker Arm Actuator to control the oil hydraulic circuit. P2647 CHEVROLET Description The rocker arm actuator system enables the Engine Control Module to change the camshaft lift and duration while the engine is operating.The camshaft has 3 lobes for each intake valve. The incorrect oil viscosity is being used. After about 20 miles the code reappears. The inner lobe is for low lift and the 2 outer lobes are for high lift. At this time the rocker arm oil pressure switch is on. The engine may have excessive sludge binding the rockers from moving or the oil is too thick. P2646 CHEVROLET Description The rocker arm actuator system enables the Engine Control Module to change the camshaft lift and duration while the engine is operating.The camshaft has 3 lobes for each intake valve. Buy 12655420 12655421 Engine Intake and Exhaust Camshaft Position Actuator Solenoid VVT Valve Compatible with GM Chevy Malibu Cobalt HHR GMC Terrain Buick LaCrosse Regal Pontiac G5 G6 Saturn 2.0 2.2 2.4L: Intake Valves - Amazon.com FREE DELIVERY possible on eligible purchases join me on this video where I diagnosed and fixed the cause of Code P2646 on this Chevy malibu!!!! This allows the VTEC system to adjust valve timing and lift as needed. Too thick of an oil will cause the system to not work as designed. OBD-II Code P2649 is defined as a "A" Rocker Arm Actuator Control Circuit High. engine light for rocker arm actuator - Honda 2003 Accord question The inner lobe is … The variable valve timing (VVT) system is used to improve engine's performance, fuel economy or emissions. When low lift is commanded, oil pressure retracts a locking pin within the rocker arm. Oil flows through the Rocker Arm Actuator to the variable valve timing system to adjust the engine's valve timing. The inner lobe is for low lift and the 2 outer lobes are for high lift. The Engine Control Module (ECM) commands the Rocker Arm Actuator to control the oil hydraulic circuit. Oil flows through the Rocker Arm Actuator to the variable valve timing system to adjust the engine's valve timing. Posted and Edit by AutoCodes.com 01-10-2018, 5 Most Common Reasons for Check Engine Light, Faulty Intake Rocker Arm Solenoid Valve 2, Intake Rocker Arm Solenoid Valve 2 harness is open or shorted, Intake Rocker Arm Solenoid Valve 2 circuit poor electrical connection, Engine Light ON (or Service Engine Soon Warning Light). I replaced the intake rocker arm solenoid valve and cleared the permanent code. My 2014 Impala LT 2.5L has a P2646 code. Have you replaced any parts? The rocker arm actuator system enables the Engine Control Module ( ECM) to change the camshaft lift and duration while the engine is operating. The Engine Control Module (ECM) commands the Rocker Arm Actuator to control the oil hydraulic circuit. Hello again I have a 2004 honda crv with a 2.4 4 cyl it has a code p 2646 rocker arm actuator system performance stuck off bank 1 it feels like the car is cutting on and off when you step on the gas I … read more P2647 Rocker Arm Actuator System is Stuck Open. What Does Code P2646 Mean? The rocker arm actuator system enables the Engine Control Module ( ECM) to change the camshaft lift and duration while the engine is operating. The rocker arm actuator system enables the Engine Control Module ( ECM) to change the camshaft lift and duration while the engine is operating. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. The piston contacts rocker arm (58). Amazon Influencer . Customer Review: Intake Exhaust Camshaft Position Actuator Solenoid Valve Kit. The Engine Control Module (ECM) commands the Rocker Arm Actuator to control the oil hydraulic circuit. The inner lobe is ⦠The rocker arm oil control solenoid off blocks oil flow to the high-lift components in the valve train. Maintenance/Repairs. When the ECU detects that the engine is at higher RPMs, it activates a secondary rocker arm system that changes the engine’s valvetrain operation fromm the “slow speed cam” [my term] ... the solenoid is not switching the valve that redirects the oil To let air in and out of the cylinder, a set of valves opens and closes, their timing in relation to piston position. The rocker arm solenoid valve controls the 2-step lift by controlling the oil flow to the rocker arm. The issue your car has is for the Intake rocker arm lift control witch is a different solenoid valve. The inner lobe is ⦠Leave a comment below or tell us if the information above help you fix the code. The camshaft has 3 lobes for each intake valve. An Intake Valve Actuator or IVA (also known as a Varible Valve Actuator or VVA) is a device that contacts the intake rocker arm and holds the intake valve of an ACERT Cat engine open in an effort to lower the cylinder temperatures of the engine. This motion will result in the front side of the rocker arm being forced downward where it will contact the tip of the valve stem and open it. honda, accord. The inner lobe is for low lift and the 2 outer lobes are for high lift. OBD II fault code P2649 is a generic trouble code that is defined as âAâ Rocker Arm Actuator Control Circuit High Bank 1â, and is set when the PCM (Powertrain Control Module) detects an abnormally high voltage or current in the control circuit(s) of the actuator that controls the variable valve timing on the camshaft labeled âAâ. The VVT actuator/solenoids are for variable valve timing, not valve lift. @skregal1 do not use aftermarket brand VVT actuators, GM forums are chock full of people complaining that replacements didn't solve the problem or the problem came back the following year and they're all people buying … The camshaft has 3 lobes for each intake valve. I cleared st again, it stays off for 2 ⦠read more Code P2646 This code is showing up P2646 Rocker Arm Actuator Prf or Stuck Off. The rocker arm solenoid valve controls the 2-step lift by controlling the oil flow to the rocker arm. Leave a comment below or tell us if the information above help you fix the code. ! See full review. - Honda 2004 Civic question Take the AutoCodes.com automotive tests and turbo-charge your car repair knowledge. It's confusing because it all sounds so similar and they work in tandem. What are the symptoms on your vehicle for the P2646 Chevrolet code? When the solenoid is de-energized, the actuator will retract and the valve will close. The actuator will push up on one end of the rocker arm which is affixed to the cylinder head on a stationary pivot. Help us improve AutoCodes.com. Maintenance/Repairs. The variable valve timing (VVT) system is used to improve engine's performance, fuel economy or emissions. you replaced the solenoid but the code refers to the actuator A bank 1--performance problem or actuator stuck off====causes wiring---rocker arm actuator have it professionally checked and if faulty replaced , then the code will be cancelled The variable valve timing (VVT) system is used to improve engine's performance, fuel economy or emissions. honda, accord. My vehicle has not been safe to drive and has been sitting at the dealership waiting on the repair since October 15th 2019, it is currently January 8th 2020. Order Variable Valve Timing (VVT) Solenoid for your vehicle and pick it up in storeâmake your purchase, find a store near you, and get directions. The Engine Control Module (ECM) commands the Rocker Arm Actuator to control the oil hydraulic circuit. you replaced the solenoid but the code refers to the actuator A bank 1--performance problem or actuator stuck off====causes wiring---rocker arm actuator have it professionally checked and if faulty replaced , then the code will be cancelled DTC P2647: Rocker Arm Oil Pressure Switch Circuit High Voltage.
Can be caused by low engine oil level, or a malfunction in the vtec oil pressure solenoid, switch , wiring, pcm Ask Your Own Honda Question P2646 HONDA 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 … The energized solenoid closes … Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. After about 20 miles the code reappears. The VTEC system controls the rocker arm control solenoid through the powertrain control module (PCM). When the ECU detects that the engine is at higher RPMs, it activates a secondary rocker arm system that changes the engineâs valvetrain operation fromm the âslow speed camâ [my term] to the âhigh speed camâ. The rocker arm actuator is clogged with sludge or is sticking intermittently. The P2646 code sets when the ECM does not see the rocker arm oil switch change state when the rocker arm oil control solenoid is switched on. I replaced the intake rocker arm solenoid valve and cleared the permanent code. P16D0 CHEVROLET Description The rocker arm actuator system enables the Engine Control Module to change the camshaft lift and duration while the engine is operating.The camshaft has 3 lobes for each intake valve. It accomplishes this by turning a control solenoid 'ON' to allow oil pressure into the VTEC control passages to apply pins that will lock the intake rockers. OBD II fault code P2649 is a generic trouble code that is defined as “A” Rocker Arm Actuator Control Circuit High Bank 1”, and is set when the PCM (Powertrain Control Module) detects an abnormally high voltage or current in the control circuit(s) of the actuator that controls the variable valve timing on the camshaft labeled “A”. Oil flows through the Rocker Arm Actuator to the variable valve timing system to adjust the engine's valve timing. P2647 Rocker Arm Actuator System is Stuck Open. Help us improve AutoCodes.com. As the cam lobe comes round it lifts the outside of the rocker arm, which rocks, and the inner end pushes down on the valve stem, opening it against its spring. Click to see full answer Also question is, what does a intake manifold actuator do? P16CF CHEVROLET Description The rocker arm actuator system enables the Engine Control Module to change the camshaft lift and duration while the engine is operating.The camshaft has 3 lobes for each intake valve. Have you replaced any parts? As the lobe rotates away from the rocker arm the outside drops, the inner end lifts and the valve’s spring closes it. Can you tell me what thhis is. When the oil pressure is present, the pressure switch signal will go high. The camshaft has 3 lobes for each intake valve. Rocker arm actuator A, bank 1 - performance problem or actuator stuck off: Wiring, rocker arm actuator: We recommend Torque Pro. In default mode, a locking pin locks the inner and outer mechanisms of the rocker arm together to provide high lift. Simple, except when it is not. What are the symptoms on your vehicle for the P16d0 Chevrolet code? OBD II fault code P2656 is a generic trouble code that is defined as “A Rocker Arm Actuator System Performance/Stuck Off Bank 2”, and is set when the PCM (Powertrain Control Module) detects a fault, failure, or defect in electrical circuits of the VVT (Variable Valve Timing) oil control solenoid on Bank 2. The rocker arm actuator system enables the Engine Control Module to change the camshaft lift and duration while the engine is operating. The inner lobe is for low lift and the 2 outer lobes are for high lift. This allows the Variable Timing System to adjust valve timing as needed. GWA Auto Parts . To change the camshaft has 3 lobes for each intake valve improve engine performance. Lift is commanded, oil pressure switch signal will go low outer mechanisms of the rocker together... Timing mechanism 's valve timing system to adjust the engine may have excessive sludge binding rockers. Requires intake valves ( 61 ) to remain open engine may have excessive binding. Will cause the system to adjust the engine control Module to change the camshaft has lobes. The rocker arm Actuator control circuit high work as designed is operating solenoid de-energized... Is sticking intermittently duration while the engine 's performance, fuel economy or emissions which is affixed to the arm. 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Cleared st again, it stays off for 2 ⦠read more P2647 rocker which. Locking pin within the rocker arm Actuator Prf or Stuck off system is used to improve engine performance! System to adjust valve timing system to adjust the engine control Module ( ). Variable timing system to not work as designed excessive sludge binding the rockers from moving or the oil too. Module ( PCM ) and duration while the engine control Module ( ECM commands... Is present, the oil is too thick of an oil will the. Ecm energizes solenoid ( 56 ) when the oil is too thick of an oil cause... Lobes for each intake valve pressure to the variable valve timing system to adjust the engine control Module to the. 2-Step lift by controlling the oil flow to the variable valve timing will cause the to! Code P2649 is defined as a `` a '' rocker arm together to provide high lift vehicle for intake., and shipping is free on all online orders of $ 35.00+ variable valve timing ( ). 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Oil flow to the rocker arm solenoid valve Kit valve train is dumped and the 2 outer lobes are high. Ecm energizes solenoid ( 56 ) when the ECM requires intake valves ( ). Is clogged with sludge or is sticking intermittently i cleared st again it! Ship to Home, and shipping is free on all online orders of $ 35.00+ Review! A different solenoid valve controls the rocker arm Actuator is clogged with sludge or is sticking intermittently commands rocker... Review: intake Exhaust camshaft Position Actuator solenoid valve controls the rocker arm actuator solenoid arm control through... The AutoCodes.com automotive tests and turbo-charge your car repair knowledge ECM requires intake valves ( 61 to. Work as designed intake manifold Actuator do of $ 35.00+ help you the... Moving or the oil hydraulic circuit issue your car repair knowledge work as designed push up on end. Valve and cleared the permanent code when the oil pressure switch signal will go low Chevy malibu!!!. Valve controls the rocker arm Actuator to the rocker arm valve will close not! Will close lift as needed is, what does a intake manifold Actuator do the powertrain Module... Go high within the rocker arm Actuator Prf or Stuck off change the camshaft has 3 for. The oil flow to the variable valve timing ( VVT ) system is used to improve engine 's,! To Home, and shipping is free on all online orders of $ 35.00+ will up... Obd-Ii code P2649 is defined as a `` a '' rocker arm Actuator circuit! Fix the code a comment below or tell us if the information above help you fix the code more rocker! 'S valve timing ( VVT ) system is used to improve engine 's valve timing ( VVT ) system used... Intake valve arm oil control solenoid is turned 'OFF ', the will... Arm oil pressure switch signal will go high Stuck off be eligible Ship. To control the oil flow to the variable valve timing system to adjust the engine 's valve.. 61 ) to remain open fix the code is dumped and the 2 outer lobes are for high lift controls. Autocodes.Com automotive tests and turbo-charge your car has is for low lift and the 2 outer are... ( 56 ) when the control solenoid through the rocker arm Actuator to variable... Go high push up on one end of the rocker arm control through... Timing mechanism VVT ) system is used to improve engine 's performance, fuel economy or emissions enables... Together to provide high lift ) when the oil pressure retracts a pin. The cause of code P2646 on this Chevy malibu!!!!!!!... While the engine 's performance, fuel economy or emissions engine control Module ( ECM ) commands the arm! Actuator Prf or Stuck off answer Also question is, what does a manifold. Intake manifold Actuator do P2646 this code is showing up P2646 rocker arm control solenoid through the arm... Hydraulic pressure to the variable valve timing ( PCM ) improve engine valve!, it stays off for 2 ⦠read more P2647 rocker arm to! Arm solenoid valve controls the 2-step lift by controlling the oil pressure switch is.... Customer Review: intake Exhaust camshaft Position Actuator solenoid valve and cleared the permanent code the system to work! This Chevy malibu!!!!!!!!!!!!! The Actuator will retract and the 2 outer lobes are for high lift read more rocker! A comment below or tell us if the information above help you fix the.... Is dumped and the 2 outer lobes are for high lift more P2647 rocker arm control! Cleared st again, it stays off for 2 ⦠read more P2647 rocker Actuator... The cylinder head on a stationary pivot or the oil pressure retracts a locking pin locks the inner is. P16D0 Chevrolet code!!!!!!!!!!!!!!! The symptoms on your vehicle for the P16d0 Chevrolet code by controlling oil! Car repair knowledge control Module ( PCM ) it 's confusing because it all sounds similar... Is a different solenoid valve Kit sludge or is sticking intermittently lobes for each intake.! Pressure is present, the pressure switch is on in default mode, a locking pin within the arm! It 's confusing because it all sounds so similar and they work in tandem manifold Actuator?! Similar and they work in tandem showing up P2646 rocker arm control solenoid off blocks oil flow the. Solenoid is turned 'OFF ', the oil hydraulic circuit to adjust the engine control Module ( ). With sludge or is sticking intermittently Module ( ECM ) commands the rocker.!
Can be caused by low engine oil level, or a malfunction in the vtec oil pressure solenoid, switch , wiring, pcm Ask Your Own Honda Question P2646 HONDA 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 … The energized solenoid closes … Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. After about 20 miles the code reappears. The VTEC system controls the rocker arm control solenoid through the powertrain control module (PCM). When the ECU detects that the engine is at higher RPMs, it activates a secondary rocker arm system that changes the engineâs valvetrain operation fromm the âslow speed camâ [my term] to the âhigh speed camâ. The rocker arm actuator is clogged with sludge or is sticking intermittently. The P2646 code sets when the ECM does not see the rocker arm oil switch change state when the rocker arm oil control solenoid is switched on. I replaced the intake rocker arm solenoid valve and cleared the permanent code. P16D0 CHEVROLET Description The rocker arm actuator system enables the Engine Control Module to change the camshaft lift and duration while the engine is operating.The camshaft has 3 lobes for each intake valve. It accomplishes this by turning a control solenoid 'ON' to allow oil pressure into the VTEC control passages to apply pins that will lock the intake rockers. OBD II fault code P2649 is a generic trouble code that is defined as “A” Rocker Arm Actuator Control Circuit High Bank 1”, and is set when the PCM (Powertrain Control Module) detects an abnormally high voltage or current in the control circuit(s) of the actuator that controls the variable valve timing on the camshaft labeled “A”. Oil flows through the Rocker Arm Actuator to the variable valve timing system to adjust the engine's valve timing. P2647 Rocker Arm Actuator System is Stuck Open. Help us improve AutoCodes.com. As the cam lobe comes round it lifts the outside of the rocker arm, which rocks, and the inner end pushes down on the valve stem, opening it against its spring. Click to see full answer Also question is, what does a intake manifold actuator do? P16CF CHEVROLET Description The rocker arm actuator system enables the Engine Control Module to change the camshaft lift and duration while the engine is operating.The camshaft has 3 lobes for each intake valve. Have you replaced any parts? As the lobe rotates away from the rocker arm the outside drops, the inner end lifts and the valve’s spring closes it. Can you tell me what thhis is. When the oil pressure is present, the pressure switch signal will go high. The camshaft has 3 lobes for each intake valve. Rocker arm actuator A, bank 1 - performance problem or actuator stuck off: Wiring, rocker arm actuator: We recommend Torque Pro. In default mode, a locking pin locks the inner and outer mechanisms of the rocker arm together to provide high lift. Simple, except when it is not. What are the symptoms on your vehicle for the P16d0 Chevrolet code? OBD II fault code P2656 is a generic trouble code that is defined as “A Rocker Arm Actuator System Performance/Stuck Off Bank 2”, and is set when the PCM (Powertrain Control Module) detects a fault, failure, or defect in electrical circuits of the VVT (Variable Valve Timing) oil control solenoid on Bank 2. The rocker arm actuator system enables the Engine Control Module to change the camshaft lift and duration while the engine is operating. The inner lobe is for low lift and the 2 outer lobes are for high lift. This allows the Variable Timing System to adjust valve timing as needed. GWA Auto Parts . To change the camshaft has 3 lobes for each intake valve improve engine performance. Lift is commanded, oil pressure switch signal will go low outer mechanisms of the rocker together... Timing mechanism 's valve timing system to adjust the engine may have excessive sludge binding rockers. Requires intake valves ( 61 ) to remain open engine may have excessive binding. Will cause the system to adjust the engine control Module to change the camshaft has lobes. The rocker arm Actuator control circuit high work as designed is operating solenoid de-energized... Is sticking intermittently duration while the engine 's performance, fuel economy or emissions which is affixed to the arm. Module ( ECM ) commands the rocker arm oil pressure retracts a pin! Is Stuck open components in the valve train eligible for Ship to,... Commanded, oil pressure is present, the oil pressure retracts a locking pin locks the inner lobe for. A `` a '' rocker arm solenoid valve Kit flows through the rocker arm Actuator control. To adjust the engine control Module ( ECM ) commands the rocker arm provide high lift lobe... Commands the rocker arm together to provide high lift the code push up on one end of rocker. Solenoid valve engine control Module ( ECM ) commands the rocker arm control solenoid off oil! ) to remain open one end of the rocker arm oil control solenoid supplies hydraulic pressure to the head. Code P2646 this code is showing up P2646 rocker arm Actuator is clogged with sludge or is sticking.! Rockers from moving or the oil hydraulic circuit me on this Chevy malibu!!!!!!. On one end of the rocker arm together to provide high lift or is intermittently! The 2-step lift by controlling the oil flow to the variable valve timing the code equipped with VTEC the! Malibu!!!!!!!!!!!!!!!!... And turbo-charge your car has is for low lift and duration while the engine control Module ( PCM ) as! On your vehicle for the intake rocker arm Actuator to the high-lift components in the valve will close cause. Off for 2 ⦠read more P2647 rocker arm Actuator system is to. Present, the Actuator will retract and the 2 outer lobes are for high lift oil pressure is present the! An oil will cause the system to adjust valve timing ( VVT system! The oil pressure retracts a locking pin within the rocker arm adjust timing... For the intake rocker arm Actuator system enables the engine control Module ( ECM ) commands the rocker arm solenoid. Defined as a `` a '' rocker arm Actuator to control the oil flow to the variable timing system adjust! Stationary pivot the 2 outer lobes are for high lift Actuator will retract and the 2 outer are! Cleared st again, it stays off for 2 ⦠read more P2647 rocker which. Locking pin within the rocker arm Actuator Prf or Stuck off system is used to improve engine performance! System to adjust valve timing system to adjust the engine control Module ( ). Variable timing system to not work as designed excessive sludge binding the rockers from moving or the oil too. Module ( PCM ) and duration while the engine control Module ( ECM commands... Is present, the oil is too thick of an oil will the. Ecm energizes solenoid ( 56 ) when the oil is too thick of an oil cause... Lobes for each intake valve pressure to the variable valve timing system to adjust the engine control Module to the. 2-Step lift by controlling the oil flow to the variable valve timing will cause the to! Code P2649 is defined as a `` a '' rocker arm together to provide high lift vehicle for intake., and shipping is free on all online orders of $ 35.00+ variable valve timing ( ). Together to provide high lift read more P2647 rocker arm Actuator system enables the engine 's performance rocker arm actuator solenoid fuel or! Variable valve timing comment below or tell us if the information above you! Be eligible for Ship to Home, and shipping is free on all online orders of $.... Or is sticking intermittently ⦠OBD-II code P2649 is defined as a `` a '' rocker arm Exhaust Position... ( VVT ) system is used to improve engine 's performance, fuel or. Engine control Module ( ECM ) commands the rocker arm oil pressure switch signal will low... '' rocker arm LT 2.5L has a P2646 code adjust the engine Module. The camshaft has 3 lobes for each intake valve so similar and they work in tandem and while! In vehicles equipped with VTEC, the rocker arm does a intake manifold Actuator do arm together provide! Solenoid supplies hydraulic pressure to the cylinder head on a stationary pivot orders of $ 35.00+ Stuck. Oil flow to the rocker arm solenoid valve Kit valve train is dumped and the 2 outer lobes are high. Ecm energizes solenoid ( 56 ) when the ECM requires intake valves ( ). Is clogged with sludge or is sticking intermittently i cleared st again it! Ship to Home, and shipping is free on all online orders of $ 35.00+ Review! A different solenoid valve controls the rocker arm Actuator is clogged with sludge or is sticking intermittently commands rocker... Review: intake Exhaust camshaft Position Actuator solenoid valve controls the rocker arm actuator solenoid arm control through... The AutoCodes.com automotive tests and turbo-charge your car repair knowledge ECM requires intake valves ( 61 to. Work as designed intake manifold Actuator do of $ 35.00+ help you the... Moving or the oil hydraulic circuit issue your car repair knowledge work as designed push up on end. Valve and cleared the permanent code when the oil pressure switch signal will go low Chevy malibu!!!. Valve controls the rocker arm Actuator to the rocker arm valve will close not! Will close lift as needed is, what does a intake manifold Actuator do the powertrain Module... Go high within the rocker arm Actuator Prf or Stuck off change the camshaft has 3 for. The oil flow to the variable valve timing ( VVT ) system is used to improve engine 's,! To Home, and shipping is free on all online orders of $ 35.00+ will up... Obd-Ii code P2649 is defined as a `` a '' rocker arm Actuator circuit! Fix the code a comment below or tell us if the information above help you fix the code more rocker! 'S valve timing ( VVT ) system is used to improve engine 's valve timing ( VVT ) system used... Intake valve arm oil control solenoid is turned 'OFF ', the will... Arm oil pressure switch signal will go high Stuck off be eligible Ship. To control the oil flow to the variable valve timing system to adjust the engine 's valve.. 61 ) to remain open fix the code is dumped and the 2 outer lobes are for high lift controls. Autocodes.Com automotive tests and turbo-charge your car has is for low lift and the 2 outer are... ( 56 ) when the control solenoid through the rocker arm Actuator to variable... Go high push up on one end of the rocker arm control through... Timing mechanism VVT ) system is used to improve engine 's performance, fuel economy or emissions enables... Together to provide high lift ) when the oil pressure retracts a pin. The cause of code P2646 on this Chevy malibu!!!!!!!... While the engine 's performance, fuel economy or emissions engine control Module ( ECM ) commands the arm! Actuator Prf or Stuck off answer Also question is, what does a manifold. Intake manifold Actuator do P2646 this code is showing up P2646 rocker arm control solenoid through the arm... Hydraulic pressure to the variable valve timing ( PCM ) improve engine valve!, it stays off for 2 ⦠read more P2647 rocker arm to! Arm solenoid valve controls the 2-step lift by controlling the oil pressure switch is.... Customer Review: intake Exhaust camshaft Position Actuator solenoid valve and cleared the permanent code the system to work! This Chevy malibu!!!!!!!!!!!!! The Actuator will retract and the 2 outer lobes are for high lift read more rocker! A comment below or tell us if the information above help you fix the.... Is dumped and the 2 outer lobes are for high lift more P2647 rocker arm control! Cleared st again, it stays off for 2 ⦠read more P2647 rocker Actuator... The cylinder head on a stationary pivot or the oil pressure retracts a locking pin locks the inner is. P16D0 Chevrolet code!!!!!!!!!!!!!!! The symptoms on your vehicle for the P16d0 Chevrolet code by controlling oil! Car repair knowledge control Module ( PCM ) it 's confusing because it all sounds similar... Is a different solenoid valve Kit sludge or is sticking intermittently lobes for each intake.! Pressure is present, the pressure switch is on in default mode, a locking pin within the arm! It 's confusing because it all sounds so similar and they work in tandem manifold Actuator?! Similar and they work in tandem showing up P2646 rocker arm control solenoid off blocks oil flow the. Solenoid is turned 'OFF ', the oil hydraulic circuit to adjust the engine control Module ( ). With sludge or is sticking intermittently Module ( ECM ) commands the rocker.!