Code p2646 honda element

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...

Code p2646 honda element. 176 posts · Joined 2017. #5 · Jan 2, 2022. I switch to 5-30 oil over 200k miles to prevent the oil pressure drop which CAN (not does) trigger a P2646 code with loose bearing clearances on higher mileage engines. That and clean oil, and clean screens, help 90% of the time. Mike1953.

Code for rocker arm actuator p2646 think and a. 08 Honda crv. Code for rocker arm actuator p2646 think and a 83-1. Replaced vtec varaible speed oil solenoid system but it came back … read more. Anthony P.

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. ... 2003 Honda Element EX AT 2WD 355k+ miles, 2003 Honda CRV EX AT AWD …I'm new to the forum and appreciate everyone's experience. My '03 Element, 115K, has had a shudder at low-load 1600 rpm occasionally and now the check engine light has come on. Local shop computer says P2646. (The Honda dealer replaced the VTEC unit a couple of years ago when I had trouble accelerating, a different symptom than the …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 ...When considering the Honda Element’s reliability, it’s important to grasp its potential issues. Expect common oil leak concerns like the Variable Timing Control Solenoid gasket.. Keep an eye on low oil pressure triggering code P2646 and make sure regular oil changes. Address key responder problems with a check of battery and physical …Aug 29, 2022 ... [E113] Honda CRV check engine light on code P2646. Vtec pressure switch? · Comments5.chasing the code p2646 ... I had codes 2646 and 0011 on a 04 ex, went into limp mode over 3k rpms. ... 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.

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.Jan 31, 2017 · 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. Checking the screen, and replacement of the VTEC solenoid. some people call this a spool valve, camshaft actuator, or a VVT (variable valve timing) solenoid....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 …2003 HONDA ELEMENT. 4 CYL. AWD. AUTOMATIC. 125,000 MILES. I have a 2003 Honda Element and it is throwing a P2646 code. I found that the majority of posts blame this to the Oil Pressure switch. I replaced it and cleared the code. Drove it around and the code came back and engaged the "limp" mode (2800 rpm limiter).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 the ignition off and back on, and it goes out of limp mode but usually comes back on soon. My 2003 CR-V (199K) has had the same issue for months - it shows as P1259 (VTEC malfunction)P2646, which is an OBD-II generic code for the engine control module (E... This is basically Part 2 in a conquest to solve P2646 for my brother's Honda Accord. P2646, which is an OBD-II generic ...May 10, 2021 · 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.

lostwater said: Hi! I am looking to buy a Honda Element and reading here there are many many posts about the P2646 code with the oil pressure switch and going into limp mode. I've seen these for the 2003-2006 generation Element, but haven't yet seen a post mentioning the problem in later Elements (2007 on) when the motor changed (10 …In today’s digital landscape, having a well-optimized website is crucial for businesses to succeed online. One of the key elements in optimizing your website is utilizing HTML codi...Read here for P2646: VTEC problem: Code P2646 (also 2647, 2648, 2649) | Page 26 | Honda Element Owners Club P2646 will cause your engine to go into limp mode at about 3000 rpm which is why you're experiencing the "sputtering". It is not in vain, but do not just simply throw parts at it. P0420 is a catalytic converter efficiency code; it may set ...P2646 code pops up with no other codes. Because cleaning the Vtec solenoid screen is easy and I free fix, I did that first. Code stayed on but problem went away for one day. I decided to order the parts and fix it right. I purchased directly from my local Honda dealer (almost $200 for the solenoid alone).03 honda element p02646 11 Answers. Ok so my wife and i have had this car for a while now. A few years back my wife ran it low on oil... it would throw the p2646 code... changed the oil.... cleaned both screens cleared the code and al... 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.

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The VTEC system controls the variable valve timing in your Element. It does this by activating the VTEC/Rocker arm solenoid. It uses the Rocker Arm oil pressure switch to monitor the pressure of this system. When the pressure is lower than the solenoid, the check engine light will come on and you’ll get P2646. Here’s … See moreIn the world of e-commerce, efficient and accurate shipping is a crucial aspect for any online business. One key element in ensuring smooth shipping operations is having the correc...Title Price Buy; Top Top: Castrol Edge 5W-40 A3/B4 Advanced Full Synthetic Motor Oil, 5 Quart Jug: Buy Now: Top Top: Dodge Ram 6.7L Cummins Diesel Fuel Filter Water Separator And Oil Filter Set for Dodge Ram 2013-2018 2500 3500 4500 5500 6.7L Turbo Diesel Engines 68197867AA 68157291AA 5083285AAI've had the dreadful P2646 code tripped. Instead of replacing the switch, I purchased a new oem solenoid. It had run like new for a couple of weeks and then the code reappeared. ... Element Owners Club is your go to forum community to discuss your Honda Element, and get ideas from your next great trip to your next Honda Element Mod. …

P2646 Code on 2004 Honda Element. Maintenance/Repairs. element, oil-changes, engines, oil, honda. Misael_Ramos December 24, 2018, 5:04am 1. Check engine came on and it read P2646 which is apparently as a result of engine sludge immobilizing a rocker arm actuator. Should I do a flush? With what? Solution was to replace the spool …I just changed radiator & a few days later my wife said CEL is on. I checked oil & was at add line, so I added a qt. Reset CEL with battery disconnected, & test drove .OK. But later that night CEL came on. I dropped gear shifter into 2nd to raise rpm & at 3K ish & limp mode kicked in. I did not get anyone to pull codes yet but wag it is the ...Diagnostic trouble code (DTC) P2647 stands for “‘A’ Rocker Arm Actuator System Stuck On.”. Engines with VTEC utilize a rocker arm actuator system to vary valve lift using two camshaft profiles (high and low RPM). The P2647 code can be triggered if the PCM detects a discrepancy between the actual state of the oil pressure switch and its ...Code P2646 troubles My element has had this code pop up on and off for probably about a year now. When it occurs, the engine light, traction, and VSA light all turn on and the car …As for the VTEC, A thread-title search for keyword "p2646" returns this relevant thread: VTEC problem: Code P2646 (also 2647, 2648, 2649) You sure have a lot of other codes there, though.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. 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. 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. 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 …

G101 is the one on top right of the intake. Spliced a new wire and voila, no more voltage on pin 1. Back together, clear codes and test drive, P2646 the moment it hits 3k rpm. I didn't have the oil pressure tester to go through the procedure for P2646 so we ordered one and waited.

Cars that have timing chains instead of timing belts include the 2006 to 2016 Honda Civic, 2003 to 2016 Honda CR-V and Accord 2.4 and 2003 to 2011 Honda Element. Timing chains and ...Labor: 1.0. To diagnose the P2649 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.2003 Honda Element has P2646 code for VTEC system and is cutting out at 2600rpm. Checked oil and screens, the spool valve assembly replaced 1yr ago but stil...My mom has been the owner of my 2003 for 5 years now. This week the car's CEL came on and it went into limp mode. When I had the codes checked, we came up with P0304 and P2646. I ordered and replaced the VTEC Solenoid Assembly with Timing Oil Pressure Switch and Gasket. I pulled the battery to clear the codes.Feb 12, 2023 · What Does the Honda P2646 Code Mean? The P2646 DTC means that there’s a voltage discrepancy between the rocker arm oil pressure switch (VTEC oil pressure switch) and the hydraulic circuit, determined by the ECM/PCM command. In today’s digital landscape, having a well-optimized website is crucial for businesses to succeed online. One of the key elements in optimizing your website is utilizing HTML codi...Back together, clear codes and test drive, P2646 the moment it hits 3k rpm. I didn't have the oil pressure tester to go through the procedure for P2646 so we ordered one and waited. In the meantime Greg did some searching and found out that the Japanese K24 has a different intake advance cam. ... So I purchased a 2003 Honda Element EX 5 …Step 1: Diagnostic Scan. Before diving into any repairs, it’s essential to perform a diagnostic scan to confirm that code P2646 is indeed the issue. You can use an OBD-II scanner to retrieve the trouble codes from your Honda Accord’s ECM. Make sure to write down the codes displayed for future reference.

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2003 Honda Element has P2646 code for VTEC system and is cutting out at 2600rpm. Checked oil and screens, the spool valve assembly replaced 1yr ago but stil... P2646 Honda Code - Rocker Arm Oil Pressure Switch Circuit Low Voltage. How to Fix. Check the 'Possible Causes' listed above. Visually inspect the related wiring …I just changed radiator & a few days later my wife said CEL is on. I checked oil & was at add line, so I added a qt. Reset CEL with battery disconnected, & test drove .OK. But later that night CEL came on. I dropped gear shifter into 2nd to raise rpm & at 3K ish & limp mode kicked in. I did not get anyone to pull codes yet but wag it is the ...Feb 4, 2020 · Diagnosis of a P2646 code on a 2007 Honda CR-V. Rocker Arm Actuator System PerformanceDisclaimer:Due to factors beyond the control of CharlesAndCars, it cann... Title Price Buy; Top Top: Castrol Edge 5W-40 A3/B4 Advanced Full Synthetic Motor Oil, 5 Quart Jug: Buy Now: Top Top: Dodge Ram 6.7L Cummins Diesel Fuel Filter Water Separator And Oil Filter Set for Dodge Ram 2013-2018 2500 3500 4500 5500 6.7L Turbo Diesel Engines 68197867AA 68157291AA 5083285AAA 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 …Introducing the P2646 Honda Element – the ultimate guide for all Honda enthusiasts out there! If you're a proud owner. Close Menu. Subscribe to UpdatesElement Owners Club. General Honda Element Discussion. Code p2646. Tags help please. Jump to Latest Follow 1K views 4 ...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. ... 2003 Honda Element EX AT 2WD 355k+ miles, 2003 Honda CRV EX AT AWD …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. ….

When considering the Honda Element’s reliability, it’s important to grasp its potential issues. Expect common oil leak concerns like the Variable Timing Control Solenoid gasket.. Keep an eye on low oil pressure triggering code P2646 and make sure regular oil changes. Address key responder problems with a check of battery and physical …Aug 4, 2017 · The VTEC system increases the amount of intake valve lift for increased power. 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. When the oil pressure is present, the pressure switch signal will go high. 2003 Honda Element Sunset Orange Pearl 2WD Automatic 135K Miles I Love It! ... washed engine and now I am getting the P2646 code now, changed the oil, clean the vets screen, ordered a new Honda vtec solenoid, and oil pressure switch. after reading this thread all 20 pages I ordered new connectors from amazon. so now I know …Element Owners Club. General Honda Element Discussion. Code p2646. Tags help please. Jump to Latest Follow 1K views 4 ...I have a 2007 Element, SC. It has 210,000 miles on the car. At 200,000 I had a P2646 code pop up. Check engine light came on, VSA and The triangle and exclamation mark. The vehicle bucked and shook on hard acceleration. I was out of town and had a local mechanic change out the VVT pressure switch, change the oil.VTEC solenoid valve located on rear right of cylinder head next to exhaust manifold and above oil filter. Disconnect VTEC solenoid valve and VTEC oil pressure switch connectors. Remove the three 10 mm hex head bolts from above. Remove the VTEC solenoid valve as a unit.Cars that have timing chains instead of timing belts include the 2006 to 2016 Honda Civic, 2003 to 2016 Honda CR-V and Accord 2.4 and 2003 to 2011 Honda Element. Timing chains and ...Jan 16, 2024 · 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... VTEC solenoid valve located on rear right of cylinder head next to exhaust manifold and above oil filter. Disconnect VTEC solenoid valve and VTEC oil pressure switch connectors. Remove the three 10 mm hex head bolts from above. Remove the VTEC solenoid valve as a unit.#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 … Code p2646 honda element, If it does not it will set the code. At 3000 rpm it should take at least 57 psi oil pressure to open the rocker arm oil pressure switch. If the oil pressure is low at that point throwing parts at it will not correct the issue. Read the info at the link below. P2646 Honda., 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)., It was a gigantic pain in the dick and didn't solve the issue, but it did make the code switch from p2646 to p2647, and turn back on immediately after clearing codes. I figured that meant it was very unlikely to be any actual physical issues with oil pressure - blockages, low oil, dirty passages or crud somewhere in the system. , 103 satisfied customers. I have a Vtec low pressure code p2646. The code is P2646. yes. I replaced the pressure switchsolenoid assembly with the little screen on the back left of the engine, and the pressure sensor located … read more. Ricardo Hohl. Auto Motive Instructor., Jan 7, 2020 · P2646 is a common diagnostic trouble code that affects Honda made vehicles, including the Accord. This code indicates that there is an issue with rocker arm oil pressure switch. The Rocker arm oil pressure switch verifies the correct oil pressure in the Variable Valve Timing (VVT) mechanism, and is often referred to as the VTEC (Variable Valve ... , If the oil is dirty or the level is low, the check engine light may appear for code P2646. Drain as much oil as possible, replace the solenoid, and keep up with oil changes as much as possible. 2. Ignition Switch Problems. Flashing green key light on 2003 to 2011 Honda Pilot., 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., #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 …, If you own a Honda vehicle and have ever encountered a situation where your radio suddenly stopped working and displayed a message asking for a security code, you are not alone. Th..., 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, Causes of code P2646 on a Honda CR-V. There are several potential causes for code P2646 on a Honda CR-V: 1. Defective VVT oil pressure switch: The switch may be faulty or malfunctioning, causing incorrect signals to be sent to the engine control module (ECM)., Based on your description, it sounds like your Element is in "limp" mode. My best guess is it will show either a P2646 or P2647 code; which means a problem with the VTEC system. But it may have another code too. Let us know know the code and then we can help you diagnose the problem. Hope this helps., If you’ve recently found yourself staring at your Honda’s radio, unable to unlock it because you don’t have the code, don’t worry – you’re not alone. Many Honda owners face this fr..., VTEC problem: Code P2646 (also 2647, 2648, 2649) ... 2003 Honda Element EX AT 2WD 355k+ miles, 2003 Honda CRV EX AT AWD 310k+ miles, 2018 Ford Transit LR XLT RWD 40k ..., P2646 is a common diagnostic trouble code that affects Honda made vehicles, including the Accord. This code indicates that there is an issue with rocker arm oil pressure switch. The Rocker arm oil pressure switch verifies the correct oil pressure in the Variable Valve Timing (VVT) mechanism, and is often referred to as the, I have a 07 Honda Element AWD. my problem is that every couple of weeks to couple of months I get a P0420 and then shortly afterwords I get a P2646 rocker arm actuator oil control valve stuck on/off code. I didn't think the two were related at first. I put some cat-a-clean in it and that fixed the p0420 for a while. I'm not doing that again., Aug 9, 2023 · Title Price Buy; Top Top: Castrol Edge 5W-40 A3/B4 Advanced Full Synthetic Motor Oil, 5 Quart Jug: Buy Now: Top Top: Dodge Ram 6.7L Cummins Diesel Fuel Filter Water Separator And Oil Filter Set for Dodge Ram 2013-2018 2500 3500 4500 5500 6.7L Turbo Diesel Engines 68197867AA 68157291AA 5083285AA , Nov 28, 2010 · Got the P2646 code (as a result of a check engine light and VSA lights) Oil screen was nasty. Cleaned with carb cleaner and problem fixxed. The P2646 code was giving a rocker arm problem code (ridiculus) Per your request, uploaded some photos with arrows. YukonCRV. , 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 …, 08 Honda Element lx with 187600 miles on it. Has p2646 code. Car goes into limp mode and won't go above 3000 rpms but problem stops when the engine is shut off and on while driving (until it comes back on of course) I've replaced the Vtec solenoid and the sensor on it. And I have also cleaned out one of the screens for the oil., 08 Honda Element lx with 187600 miles on it. Has p2646 code. Car goes into limp mode and won't go above 3000 rpms but problem stops when the engine is shut off and on while driving (until it comes back on of course) I've replaced the Vtec solenoid and the sensor on it. And I have also cleaned out one of the screens for the oil., 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., Based on your description, it sounds like your Element is in "limp" mode. My best guess is it will show either a P2646 or P2647 code; which means a problem with the VTEC system. But it may have another code too. Let us know know the code and then we can help you diagnose the problem. Hope this helps., Nov 28, 2010 · Got the P2646 code (as a result of a check engine light and VSA lights) Oil screen was nasty. Cleaned with carb cleaner and problem fixxed. The P2646 code was giving a rocker arm problem code (ridiculus) Per your request, uploaded some photos with arrows. YukonCRV. , 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. Had it put on by someone I trust at a local service center. Code was cleared, all was well., However, there are other faults that can cause P2646, including low VTEC oil pressure (from dirty oil clogging filter screens in the engine, low oil, wrong oil, bad oil pump, worn engine etc), loose wire connectors/broken wiring, and computer errors. The P0339 and P0442 should be unrelated to the VTEC system and P2646., The VTEC system increases the amount of intake valve lift for increased power. 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. When the oil pressure is present, the pressure switch signal will go high., Apr 27, 2017 · Dreaded VTEC P2646 code - Tried everything. 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 the ignition off and back on, and it goes out of limp mode but usually comes back on soon. , P2646 Honda P2646 Honda — Diagnose and fix. Shops are reporting a high incidence of P2646 Honda trouble codes on Honda CR-V, Honda Element and Accord models with the 2.4L engine. The P2646 Honda code definition is: P2646: VTEC Oil Pressure Switch Circuit Low Voltage. Honda has issued a service bulletin #13-021 to address the problem on the ..., 2003 Honda Element has P2646 code for VTEC system and is cutting out at 2600rpm. Checked oil and screens, the spool valve assembly replaced 1yr ago but stil... , I just changed radiator & a few days later my wife said CEL is on. I checked oil & was at add line, so I added a qt. Reset CEL with battery disconnected, & test drove .OK. But later that night CEL came on. I dropped gear shifter into 2nd to raise rpm & at 3K ish & limp mode kicked in. I did not get anyone to pull codes yet but wag it is the ..., May 10, 2021 · 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. , P2646 Honda Code - Rocker Arm Oil Pressure Switch Circuit Low Voltage. How to Fix. 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 pins. Search for P2646 Honda Questions and Answers.