P2646 honda element

P2646: Your Engine’s Secret Alarm Bell. The P2646 code refers to the ‘A’ Rocker Arm Actuator System PerformanceStuck Off Bank 1. The Engine Control Module (ECM) controls the oil hydraulic circuit through the Rocker Arm Actuator. The Rocker Arm Actuator adjusts the engine’s valve timing through the variable valve timing (VVT) system.

This makes sense that pressure switch connector is susceptible to moisture leaking into the terminal, causing a short and code 2646, and possibly resulting in corroded terminals and an open circuit and code 2647 as I experienced. DCM. 1063 posts · Joined 2021. #13 · Jan 7, 2024.Feb 13, 2024 · Performing this bypass should not be your first option to get rid of a P2646/47 check engine light. This bypass is for people who, like me, have tried all the other solutions and still have the code return. This mod is a last ditch effort, not a first try solution. Before proceeding, you should check that 1) your vtec filters/screens are clean ... 1 post · Joined 2019. #1 · Dec 21, 2019. I did a scan when check engine light and vsa light came up odyssey 2005 , code p2646 was found , oil switch was cleaned , oil and filter changed but after driving around for 1 hour , the same lights came back again ! …P2646: Your Engine’s Secret Alarm Bell. The P2646 code refers to the ‘A’ Rocker Arm Actuator System PerformanceStuck Off Bank 1. The Engine Control Module (ECM) controls the oil hydraulic circuit through the Rocker Arm Actuator. The Rocker Arm Actuator adjusts the engine’s valve timing through the variable valve timing (VVT) system.p2646 Engine code returning after obvious repairs. Have a 2003 honda element with 116,000 miles. It's in good shape except for this recurring issue. I have had my VTEC solenoid replaced twice since I bought this vehicle 1 month ago. I've had the oil flushed once between these two replacements.Aug 9, 2023 · It is important to follow the recommended oil change schedule mentioned in your Honda Element’s owner’s manual. Doing so will help keep the oil clean and well-lubricated, preventing the accumulation of contaminants that might harm the rocker arm oil switch system.

Working on a 2006 Honda element, car has code p2646 and it goes into limp mode, vtec switch and solenoid replaced, oil level good and clean, when solenoid activates over 2500 rpm, switch is off, dont know what else could be. Thanks. Submitted: 8 months ago. Category: Honda. Show More.Good morning, Quartz readers! Good morning, Quartz readers! France celebrates Bastille Day. This year’s military parade, which marks the 100th anniversary of America’s entry into W...I do not own a service manual. My Malfunction Indicator Lamp (MIL) came on yesterday. I took the Element to AutoZone for them to put their scanner on it and was told "P2646: Rocker arm actuator A- Bank 1 Perf. or Stuck off." I also used canobd2.com and for Honda they list P2646 as: "A Rocker Arm Actuator System Performance or Stuck Off Bank 1 ...And I’ve read a handful of reports in the sticky thread that heavy rain caused P2646, which leads me to think that water getting into the connector during heavy rains (and one report of P2646 after washing the engine bay!) may be able to cause an electrical short between the two VTEC pressure switch wires.This is basically Part 3 in a quest to solve P2646 for my brother's Honda Accord. P2646, which is an OBD-II generic code for the engine control module (ECM)...P2646症状：Honda Element. P2646単独で現れることは、通常、顕著な運転性の症状に対応していません。 性能および燃料のマイレッジのマイナーなすくいに気づくかもしれない。 VTCストレーナ画面が詰まっている場合は、エンジンが重い加速下で死ぬことがあり ...According to the specifications page on Honda, the Honda CRV has a towing capacity of 1500 pounds. For a fuel-efficient SUV, the towing capacity of the CRV is in range with its com...The 1969 Honda CB750 changed motorcycling forever. Learn why and see pictures of this groundbreaking machine. Advertisement The 1969 Honda CB750 motorcycle offered a combination of...

The switch is used to tell the ECM that oil pressure has applied the v-tec control valve. Easy to test the switch, it should have 0 ohms across the 2 terminals and go open when pressure applied. Engine - MIL ON, DTC's P2646, P2651, P2647, P2652. 13-021. September 16, 2015. 49031-02409 Version 3.Constant P2646 and P2647 VTEC issues. Replaced the spool valve / vtec valve with a genuine honda part. Drove fine for 2 weeks and codes are back. I had a oil change with synthetic 5w-20 and checked for clogged screen behind the power steering pump.#1 · Jan 1, 2023. Ok I got code P 2646 "rocker arm actuaror" acording to forum or youtube I bought in Napa vtec solenoid "Dorman" after change super happy no engine light, VSA …Feb 13, 2024 · Performing this bypass should not be your first option to get rid of a P2646/47 check engine light. This bypass is for people who, like me, have tried all the other solutions and still have the code return. This mod is a last ditch effort, not a first try solution. Before proceeding, you should check that 1) your vtec filters/screens are clean ...

Aldis neosho mo.

VTEC SOLENOID REPLACEMENT AND /OR JUST SCREEN REPLACEMENT. HONDA 2.4L ENGINE 4 CYLINDERS. SAME ON CRV, ELEMENT ACCORD CIVIC. CHECK ENGINE LIGHT. HESITATE AND...This 2003 Honda Element seems to be possessed. The gauges stick or don't work at all, lights flash, relays click, it cranks but won't start. It also has a P2...A few months back car went into limp mode and code P2A00 came up. Replaced the 02 sensor and things were good until today. Throwing code P2A00 (02 sensor circuit range/performance bank 1 sensor 1) again as well as P2646 (Rocker arm actuator system performance or stuck off bank 1). Regarding the P2646-the car was down a liter of oil so that was ...Causes. Seriousness. Can I Still Drive? Diagnose. Difficulty of Inspecting. Get Additional Help. A P2646 code is an OBD code for the Engine Control Module (ECM) detecting that …hoy vamos a revisar un p2646 síntomas se Tironea de repente se Jalonea Sin fuerza Accord element CRV etc de la familia Honda Acura

Introducing our latest article for Mechanics News: “Decoding the Honda Element Code P2646 and What It Means for Your Vehicle”. Have you ever encountered the...What causes the P2646 code? The ECM detects a problem in the rocker arm system for bank 1. The oil passages are clogged or the oil pressure is not up to specifications. The rocker arm actuator is clogged with sludge or is sticking intermittently. The engine may have excessive sludge binding the rockers from moving or the oil is too thick.If your Honda Accord is overheating, the cause could be any of the vital elements of the cooling system. Those elements are the heat exchanger, fan, water pump, thermostat and cool...it would be once or so a month, then once a week, then once a day, not wont start at all. When it began to happen more often, it was only when it sat a. few hours, over night or such. it would take two or three trys cranking for like 5 seconds, to get it to start. after it started it was good, and would start again.In this video I describe common issues and fixes for Honda 2.4L engines with a p2646. #honda #crv #p2646 #automotive #diagnosis #2.4 #2.4L #tips #tricks #tec...Come along as I will show you how to repair a surging or bucking on this 2006 Honda CRV with code P2647 or 2646 pressure switch circuit voltage high or low ....Feb 28, 2023 · 1316 posts · Joined 2008. #2 · Mar 1, 2023. I would have to think that the P0420 and the P2646 are unrelated and troubleshoot them separate from each other. I would think that a persistent negative fuel trIm might be a cause of early cat failure, so I might consider looking at that together with the P0420. ALLDATA Diagnostic Bulletin. RELATED VEHICLES: 2003-2007 Accord, Element, CR-V 2.4L. SUMMARY: P2646 - VTEC Oil Pressure Switch Circuit Low Voltage; Between 2500 to 4000 RPM's while in drive, the VTEC system activates. The PCM/ECM activates the VTEC solenoid valve allowing engine oil pressure into the VTEC actuator.SpeedyGreen said: Well my 2005 Element (212K miles) became infected with the P2646 VTEC malfunction code last week. CEL comes on and goes into limp mode (won't go over 2800 RPM). Turn ignition off and back on and goes out of limp mode but usually come back on soon.And I’ve read a handful of reports in the sticky thread that heavy rain caused P2646, which leads me to think that water getting into the connector during heavy rains (and one report of P2646 after washing the engine bay!) may be able to cause an electrical short between the two VTEC pressure switch wires.Oh Crap, P2646 is back. I bought an 03 element with 265,000 miles on the car. It started to thrown the P2646 code and I tried everything to get rid of it. I took it to my local mechanic and he measure the oil pressure and cylinder pressure, sure enough the engine was weak.A subreddit for Honda Element enthusiasts! The Honda Element was a compact crossover SUV based on a modified CR-V platform, manufactured in East Liberty, Ohio and offered in front-wheel and all-wheel drive formats in the United States and Canada from model years 2003 through 2011.

Or also possibly a catalytic problem which at 150k miles a 1000$ for a new cat is not something I'm willing to do. So my question after that long winded description is would the changing of the oxygen sensor trigger the P2646 code for that VTEC switch for some reason? Or could it be that I do have a cat problem? Thanks for any help in …

Joined Oct 19, 2020. 4 Posts. #492 · May 13, 2021. I had the P2646 code problem last week. Currently at 114,000 miles on a 2008 SC AT. Diagnosed as rocker arm control system 'A' Bank 1 stuck off and switch circuit low voltage, needs switch. So the switch was replaced and so far so good.p2646 Engine code returning after obvious repairs. Have a 2003 honda element with 116,000 miles. It's in good shape except for this recurring issue. I have had my VTEC solenoid replaced twice since I bought this vehicle 1 month ago. I've had the oil flushed once between these two replacements.Sep 30, 2023 · Definition Meaning and Fixes for a Honda P2646 engine Diagnostic Trouble Code: ‘A’ Rocker Arm Actuator System Performance / Stuck Off Bank 1 "Rocker Arm Oil ... The dreaded P2646. I have a relatively high mileage 2007 EX-P 5MT 4WD with 259K. About 10K ago, I got the triple play of check engine and VSA lights and limp mode, Replaced the VTEC spool valve assembly with a (should have known better) aftermarket part. Flash forward to last week, about 7K miles later, same thing, deja vu.I just bought a 2006 Honda Element EX-P AWD with 158k miles. Absolutely love the car but am dealing with the much elusive p2646 code. Already changed the oil, oil filter, oil sensor, and the entire VTEC solenoid (with the correct part straight from Honda), but the car keeps bucking at 3000 rpm.Nov 15, 2023 · If you’re facing the persistent P2646 and P2647 codes in your Honda Element, causing the engine to enter “limp mode” at approximately 3,000 RPM, you’re not alone. Contrary to common misconception, these codes aren’t linked to a speed governor but are a result of low oil pressure at the VTEC oil pressure switch. Troubleshooting Steps Since low oil pressure is one of the potential causes of P2646, the real fix is new engine. However, there are many who are not yet willing to give up on an engine, and have decided to compensate for the low oil pressure by using a higher weight oil, such as 5w-30 or 5w-40.

Heb curbside bastrop.

Nbc today show joy bauer recipes.

Dec 26, 2022 · When people say 2003 honda element code p2646, 2004 honda element p2646, 2005 honda element p2646, or 2006 honda element p2646, they prefer the same P2646 Code. It can happen to a lot of honda models. A P2646 diagnostic trouble code is an OBD code created by the Engine Control Module (ECM). And I’ve read a handful of reports in the sticky thread that heavy rain caused P2646, which leads me to think that water getting into the connector during heavy rains (and one report of P2646 after washing the engine bay!) may be able to cause an electrical short between the two VTEC pressure switch wires.Here's the history: Get P2646 (actuator arm stuck, bank 1) error: -Replace VTEC solenoid -Replace oil pressure switch -Clean front oil screen behind power steering pump -Replace coils and plugs -Problem goes away. Soon after, get another P2646 and P0302 (cylinder misfire): -take to shop, one of the coils i had replaced was bad (bought off ...Since low oil pressure is one of the potential causes of P2646, the real fix is new engine. However, there are many who are not yet willing to give up on an engine, and have decided to compensate for the low oil pressure by using a higher weight oil, such as 5w-30 or 5w-40.It is possible to completely avoid the Honda P2646 trouble code in many cases. The engine won’t get sludge buildup with a normal oil change and the right viscosity. If you follow the recommended maintenance schedule, you won’t need to worry about the P2646 DTC. Only Honda vehicles display the P2646 code, so keep that in mind.P2646 is an OBD-II code for the engine control module when the ‘A’ rocker arm actuator control circuit for bank 1 is malfunctioning or stuck. It can reduce engine performance and cause a loud noise. The most common cause is dirty or low oil, followed by sludge, oil pressure issues, or wiring problems. The web page explains how to diagnose and fix this code with oil change, filter, connectors, or actuator replacement.Here are some of the most common Honda P2646 causes. Wrong motor oil viscosity; Clogged oil passages; Sludge clogs rocker arm actuator; Clogged oil control screener; Malfunctioning VTEC oil pressure …Diatomic elements are molecules composed of only two atoms, every time, always. There are only seven of them on the entire periodic table. Advertisement Diatomic elements hate to b...May 1, 2024 · It is possible to completely avoid the Honda P2646 trouble code in many cases. The engine won’t get sludge buildup with a normal oil change and the right viscosity. If you follow the recommended maintenance schedule, you won’t need to worry about the P2646 DTC. Only Honda vehicles display the P2646 code, so keep that in mind. Step 2 is to buy a new Honda pressure switch, not the whole block, and replace the old one in the module. Solder two wires directly to the pins. Use 18AWG auto wire, cut two lengths about a foot long. Pot the whole thing in RTV and let it cure. Re-install the block and cut the connector off the harness.DTC P2646 is defined as “Rocker Arm Actuator A, Bank 1, Performance or Stuck Off.” Honda, Acura, and a couple other automakers use this definition. What are the common causes of code P2646? Depending on year, make, and model, DTC P2646 may have number of causes. Here are some of the most common.Jan 24, 2019 · To diagnose the P2646 Honda code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour. ….

the two things that i've seen cause this code are low oil level, and a bad vtec pressure switch. 9 times out of 10, it's a customer who's 2000 miles overdue for an oil change, and they're over a quart low. i've also seen a few leaky vtec solenoid gaskets aka spool valve gasket. check that too. Mike K.How to fix Honda code P2646 VTEC for free. You're going to want to try and clean the screens for the spool valve the VTEC valve and one other screen on the f...Here's the history: Get P2646 (actuator arm stuck, bank 1) error: -Replace VTEC solenoid -Replace oil pressure switch -Clean front oil screen behind power steering pump -Replace coils and plugs -Problem goes away. Soon after, get another P2646 and P0302 (cylinder misfire): -take to shop, one of the coils i had replaced was bad (bought off ...DTC P2646 is defined as “Rocker Arm Actuator A, Bank 1, Performance or Stuck Off.” Honda, Acura, and a couple other automakers use this definition. What are the common causes of code P2646? Depending on year, make, and model, DTC P2646 may have number of causes. Here are some of the most common.This video is about Honda P2646 P2647 engine check code fix I-Vtec 2.4 Odyessy, Accord, Element, CRV. I go through what could be the cause of the fault code ...My wifes 2004 Honda Element started over heating. The temp gauge went all the way up. Oil change place said it was leak in radiator. Took it to a mechanic and said it was a head gasket. Towed to another he said head gasket. ... PO507,P2279,P2646. He cant figure it out and really is not healthy enough to be working. The mechanic is not the …To diagnose the P2646 Honda code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.FWIW, variable valve timing switch is a somewhat generic term. For the Honda, they are likely referring to the VTEC (variable timing electronic lift control) pressure switch or the VTEC spool assembly (aka VTEC solenoid). The VTEC pressure switch and VTEC solenoid are two common causes of P2646. However, there are other faults that …Jun 30, 2005 · Oh Crap, P2646 is back. I bought an 03 element with 265,000 miles on the car. It started to thrown the P2646 code and I tried everything to get rid of it. I took it to my local mechanic and he measure the oil pressure and cylinder pressure, sure enough the engine was weak. Code P1009. I have gotten a check engine light twice in a few days, cleared one and it came back on again. Well it was code P1009. Witch means VTC actuator failure. So honda checked code and replaced VTEC valve switch assymbly. Then code came back up on HDS test for them witch ended up being a valve that was sticking and a strainer … P2646 honda element, Mechanic for Honda: Tech413. This code is usually caused by a sticking VTEC oil pressure switch or low oil level. Check the oil level first if that is ok. Check the pressure switch or replace the switch. If you have access to a multimeter, I can walk you through some simple steps to check the switch., In this video, young mechanic Aiman discusses P2646, which is an OBD-II generic code for the engine control module (ECM) detecting the 'A' rocker arm actuato... , Diatomic elements are molecules composed of only two atoms, every time, always. There are only seven of them on the entire periodic table. Advertisement Diatomic elements hate to b..., backgournd: 2008 honda element ~150K miles, no other issues or codes, change oil every 5k with specified weight. Current oil level is full and has about 500 miles usage. Check engine light comes on with VSA and exclamation point lights as well. Comes on when transitioning past 3000 rpm. What I've done to date, I have a 2005 honda element the check engine light came on p2646 I put the complete assembly on it but when I was installing it I broke the oil pressure switch connector I put it on as best I could but it feels loose and the code p2646 came back after installing everything do you think that could be the problem? and i just changed the oil, authorized Honda automobile dealer. July 16, 2013 13-021 Applies To: See VEHICLES AFFECTED MIL Comes On With DTCs P2646/P2651 or P2647/P2652 (Supersedes 13-021, dated February 28, 2013, to revise the information marked by the black bars) REVISION SUMMARY • Under VEHICLES AFFECTED, 2012–13 Civic models (except Si and Hybrid) were added., Feb 28, 2023 · 1316 posts · Joined 2008. #2 · Mar 1, 2023. I would have to think that the P0420 and the P2646 are unrelated and troubleshoot them separate from each other. I would think that a persistent negative fuel trIm might be a cause of early cat failure, so I might consider looking at that together with the P0420. , Honda Element: 2005 honda element 2.4L code PO135 AF sensor 2005 honda element 2.4L code PO135 AF sensor S1 heater circuit malfunction, replaced o2 sensor, 2nd code P2646 VTEC pressure switch circuit voltage low, replaced with new switch update version still d …, This makes sense that pressure switch connector is susceptible to moisture leaking into the terminal, causing a short and code 2646, and possibly resulting in corroded terminals and an open circuit and code 2647 as I experienced. DCM. 1063 posts · Joined 2021. #13 · Jan 7, 2024., 2003-11 Element ALL ALL 2007-11 Fit ALL ALL REVISION SUMMARY Under REPAIR PROCEDURE, illustrations in step 2 specific to 2008-12 Accord PZEV were added along with additional FRT. SYMPTOM The MIL comes on with one of these DTCs: • P2646/P2651 (rocker arm oil pressure switch circuit low voltage)., According to the specifications page on Honda, the Honda CRV has a towing capacity of 1500 pounds. For a fuel-efficient SUV, the towing capacity of the CRV is in range with its com..., Feb 28, 2023 · 1316 posts · Joined 2008. #2 · Mar 1, 2023. I would have to think that the P0420 and the P2646 are unrelated and troubleshoot them separate from each other. I would think that a persistent negative fuel trIm might be a cause of early cat failure, so I might consider looking at that together with the P0420. , Today, we’re going to walk through diagnosing a P2646 code for the VTEC oil pressure switch circuit low voltage in a 2007 Honda CRV with a 2.4-liter engine. First, it’s essential to check the oil level and ensure the oil is clean and at the correct level. Low or dirty oil can cause issues with the VTEC system., This sure shows how important the correct voltage is for ECU functioning. I wish Honda had put in a real oil pressure gauge for us. These V-tech codes really need some oil pressure info to speed up the diagnostics. Silly me, I forgot, the Honda dealer doesn't want us to be able to fix these problems ourselves., This 2003 Honda Element seems to be possessed. The gauges stick or don't work at all, lights flash, relays click, it cranks but won't start. It also has a P2..., But I have the old p2646 thing going on currently, have replaced the whole solenoid, not just the oil pressure switch, have been changing the oil every 1000 miles, and for the last 3500 miles or so, I'm still getting the CEL, and for the same p2646. ... Element Owners Club is your go to forum community to discuss your Honda Element, and get ..., Honda Element. Problems & Issues. P2647 Problem Found and Solved (also P2646) Jump to Latest Follow. 28K views 23 replies 14 participants last post by SilentLou Aug 9, 2023. Tovey7 Discussion starter. 33 posts · Joined 2021. #1 · Dec 21, 2021. So I had a P2647 error code come on along with CEL., Here are some of the tools that jimthecarguy useshttps://www.amazon.com/shop/jimthecarguyIn This Video I Will Show You How To Replace The Solenoid Assembly O..., Honda Element: 2005 honda element 2.4L code PO135 AF sensor 2005 honda element 2.4L code PO135 AF sensor S1 heater circuit malfunction, replaced o2 sensor, 2nd code P2646 VTEC pressure switch circuit voltage low, replaced with new switch update version still d …, Performing this bypass should not be your first option to get rid of a P2646/47 check engine light. This bypass is for people who, like me, have tried all the other solutions and still have the code return. This mod is a last ditch effort, not a first try solution. Before proceeding, you should check that 1) your vtec filters/screens are clean ..., A week or so ago, check engine light comes on, scan... P2646 for the A rocker arm actuator not performing. Was not in limp mode, just sluggish. Went and got the oil changed, reset, went away for an hour and came back. A day later I pick up a brand new OEM valve spool assembly from a Honda dealership., P2646症状：Honda Element. P2646単独で現れることは、通常、顕著な運転性の症状に対応していません。 性能および燃料のマイレッジのマイナーなすくいに気づくかもしれない。 VTCストレーナ画面が詰まっている場合は、エンジンが重い加速下で死ぬことがあり ..., In this video, young mechanic Aiman discusses P2646, which is an OBD-II generic code for the engine control module (ECM) detecting the 'A' rocker arm actuato... , 05 Honda Element EX currently 125000 miles: original owner Beginning in 2012 (60k miles) I threw my first P2646. Replaced the entire valve assembly. Almost every 3 years this thing rears its head and I have learned to replace both screens during the oil changes. However, I have no trust with driving my car on the freeway anymore as the first ..., -P2646 VTEC OIL PRESSURE SWITCH CIRCUIT MALFUNCTION Next, took it for an oil change, in which after the tech noted the CEL turned off and now I can't get the problem to replicate. Very strange, still have an appointment with Honda on wednesday, will take the paper with me. After reading through the thread, it seems it could be a …, Get Additional Help. A P2646 code is an OBD code for the Engine Control Module (ECM) detecting that the “A” rocker arm actuator control circuit for bank 1 has a performance issue or is stuck ..., First,take out the dipstick and check the color of the oil.Is it clean?If relatively clean,there might be a problem with the VTEC valve assembly. Follow this video to replace it. 1 Like. Tester December 24, 2018, 4:15pm 3. Change the oil and filter and add Seafoam to the oil to see if provides any benefit., A few months back car went into limp mode and code P2A00 came up. Replaced the 02 sensor and things were good until today. Throwing code P2A00 (02 sensor circuit range/performance bank 1 sensor 1) again as well as P2646 (Rocker arm actuator system performance or stuck off bank 1). Regarding the P2646-the car was down a liter …, Introducing the P2646 Honda Element – the ultimate guide for all Honda enthusiasts out there! If you're a proud owner, Common p2646 question. Hi all, I am new to the forum and hoping for some help. I have an 04 cry and code P2646 popped up. So the first thing I did, from a suggestion on line was pulled off the Vtech selonoid and cleaned the screen filter and changed oil. But I didn’t have correct oil, I used 5w30 synthetic, 4 qts and topped off with reg 5w30 ..., The switch is used to tell the ECM that oil pressure has applied the v-tec control valve. Easy to test the switch, it should have 0 ohms across the 2 terminals and go open when pressure applied. Engine - MIL ON, DTC's P2646, P2651, P2647, P2652. 13-021. September 16, 2015. 49031-02409 Version 3., Huoltoliikkeet raportoivat useista P2646 Honda vikakoodeista Honda CR-V, Honda Element ja Accord malleissa, joissa on 2.4L moottori. P2646 Honda koodin määritelmä on: P2646: VTEC Oil Pressure Switch Circuit Low Voltage. Honda on julkaissut huoltotiedotteen #13-021 ongelman ratkaisemiseksi alla luetelluissa ajoneuvoissa., P2646: Your Engine’s Secret Alarm Bell. The P2646 code refers to the ‘A’ Rocker Arm Actuator System PerformanceStuck Off Bank 1. The Engine Control Module (ECM) controls the oil hydraulic circuit through the Rocker Arm Actuator. The Rocker Arm Actuator adjusts the engine’s valve timing through the variable valve timing (VVT) system.