P3400 code

honda odyssey 2017 oil pressure sensor replacement code p3400 cylinder deactivation system bank 1.

P3400 code. Oct 22, 2022 · P3400 is an engine diagnostic code that indicates ‘Cylinder Deactivation System – Bank 1’. When the Powertrain Control Module (PCM) detects an issue, malfunction, or failure in any part or element of the system that prevents the cylinder from working normally, this code is activated. Note that the code can also be engaged when any portion ...

6 posts · Joined 2024. #1 · Jan 8, 2024. has anyone encountered a reoccurring p0106 and p03400. The truck is a 2011 5.3 flex fuel. So far I have changed plugs, valve cover gaskets, maf sensor, map sensor, intake manifold gasket, and cleaned throttle body to know avail. I have checked all lines and can't see leaks and am getting proper signal ...

May 2, 2022 · P3400 is a generic OBD2 trouble code. It indicates that your Acura RDX’s cylinder deactivation system has a performance issue. It is a very common code to see in Honda-made cars, vans, and trucks. P3400 by itself is not a breakdown risk. Your RDX’s engine will run just fine on all of its cylinders. New references in Instagram's code suggest the company could be developing a paid verification feature following the rollout of a similar system at Twitter under Elon Musk. New ref...What are the symptoms of the P3400 code? Check Engine Light is on; Engine is vibrating; How does a mechanic diagnose the P3400 code? Make sure engine oil levels are correct. Also make sure that the engine oil pressure is correct.The Cylinder Deactivation System Bank 1 (P3400) is an error code that can appear on some cars. It means the car’s ECU has detected a problem with the bank 1 cylinder …Jan 8, 2022 ... 3:39 · Go to channel · Honda code p3497 p3400 fixed link below the description part (2-2). THE EASIEST WAY TO FIX•10K views · 7:04 · Go ...This is a little basic video i made on p3400. There is a troubleshooting guide in the honda service manual, but an oem rocker arm oil pressure switch and oring is only about $27. Takes a couple minutes and is worth a try. Highly recommend a vcm muzzler my mpg went up 1mpg. But you will still get a p3400 code even with a muzzler unfortunately.P3400 is the bank 1 version of this code. Honda Accord P3497 Symptoms. There aren’t many symptoms associated with P3497 in the Honda Accord. The engine may sound a little different when cruising, but you’d really have to be paying attention. ... If you have P3400 and P3497 together, that would be a strong indication that there is a real ...

Mechanic for Honda: Ron. The problem you are having with the code P3400 setting is a known concern and In most cases, it's due to a failing Rear Rocker Arm Oil Pressure Switch and Honda has released a service bulletin dealing with this that calls for replacing the switch. That being said be sure that you have clean engine oil and a good quality ...1 post · Joined 2019. #1 · Oct 27, 2019. So I just recently ran into the p3400 code on my 2014 Honda Pilot witch turn out to be a faulty rocker cam oil pressure switch. I took the sensor out and cleaned it with a bit of degreaser and air put the sensor back in and everything is working fine I did a bit more research into the problem and a lot ...cylinder deactivation solenoid removalHonda service bulletin 13-055 to fix P3400 or P3497. Honda has issued a service bulletin 13-055 to fix P3400 or P3497 and multiple misfire codes P0301 through P0304) on the vehicles listed below. P3400 and P3497 relate to rocker arm oil pressure switches B and C which measures oil pressure entering the variable cylinder management system (VCM).P3400 is the bank 1 version of this code. Honda Accord P3497 Symptoms. There aren’t many symptoms associated with P3497 in the Honda Accord. The engine may sound a little different when cruising, but you’d really have to be paying attention. ... If you have P3400 and P3497 together, that would be a strong indication that there is a real ...May 2, 2022 by Jason. P3400 is a generic OBD2 trouble code. It indicates that your Honda Accord’s cylinder deactivation system has a performance issue. It is a very common code to see in Honda-made cars, vans, and trucks. P3400 by itself is not a breakdown risk. Your Accord’s engine will run just fine on all of its cylinders.You've learned to code, but now what? You may have some basic skills, but you're not sure what to do with them. Here's how to choose and get started on your first real project. You...P3400 and p3497 codes. Coffeeholic. Oct 27, 2013. Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission. Oct 27, 2013. #1.

A P3400 code on my 2010 Odyssey with 220K miles led me to this excellent thread. My experience rates somewhere between unusual and weird. While 500+ miles away from home, the check engine light came on. Pulled in to an AutoZone and found myself two quarts down on oil. Topped off with 5W20 high-mileage oil, translated the …99999 11-Apr-12 61.59 DCEL: no codes detected Come back when it turns back on. 999999 14-Apr-12 0 DCEL: P0303 Replace #3 Spark Plug 999999 18-Sep-13 225.74 DCEL: P3400, Diagnose P03600 Replace 2 rocker arm oil pressure switch and o-ring 999999 23-Jan-14 123.17 DCEL: P3497, P3400 Burning Oil 999999 4-Jun-14 135.6 … P3400 Chrysler Code Meaning, Causes, Symptoms, & Tech Notes. Engine-Codes - Chrysler - P3400 Chrysler. P3400 Chrysler Code - Multiple Displacement System Rationality Bank 1. - Code Popularity: 17,235 Views. - Repair Importance Level: 3/3. - Repair Difficulty Level: 3/3. What is this? To better fuel mileage, your engine was designed so that at times 1/2 of the cylinders are turned off by electronic control to prevent the lifters from functioning and back on when needed. The most common causes of the P3400 code, possible reason, include one or more of the following. Faulty cylinder deactivation solenoid. Oil level gets low.Jan 20, 2024 · 1. Use an OBD-II scanner to retrieve the specific diagnostic trouble code (DTC) P3400. 2. The P3400 code indicates a problem with the Cylinder Deactivation System in the engine. 3. Inspect the engine oil level and quality. Low oil level or dirty oil can trigger this code. 4.

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Your vehicle's key code is necessary if you need to replace your car keys through a dealership or locksmith. Your vehicle's key code is usually stored in your owner's manual, as lo...1812 posts · Joined 2007. #9 · Jan 25, 2010. P3400-MDS RATIONALITY BANK 1. When all criteria has been met, power is supplied to each MDS Solenoid when the engine is making a transition from 8 cylinder mode to 4 cylinder mode.Diagnose and fix P3400, P3497 Honda codes. Honda has issued a service bulletin #11-033 to address excessive oil consumption and P3400, P3497 Honda trouble codes on the vehicles listed below. 2008–10 Accord V6 A/T – ALL.The P3400 code can also just come up sometimes. It happened on our Accord even though the oil and everything was good. I just cleared the code and it hasn't come back since. Don't even bother replacing any parts yet. Even if after topping up the oil and clearing the code it comes back, still don't replace parts quite yet.Aug 23, 2022 · P420 & 430 codes have been there a while. We need to get oxygen sensors for both banks, see if it works. The P3400 code is new and of concern. Oil level looks fine. We've replaced oil sensor switch Bank 1 with OEM part last week. It seemed to help at first, ran better, started better at first and mileage improved. But, regardless code has remained. May 2, 2022 by Jason. P3400 is a generic OBD2 trouble code. It indicates that your Honda Crosstour’s cylinder deactivation system has a performance issue. It is a very common code to see in Honda-made cars, vans, and trucks. P3400 by itself is not a breakdown risk. Your Crosstour’s engine will run just fine on all of its cylinders.

The check engine light recently came on, no words, just an orange outline of an engine. It was solid, not flashing. I read online that you could buy an inexpensive device to check specifically what the engine light really means. It said P3400. I found a thread here that suggested this likely involves the ECO cylinder deactivation system, but ...Your vehicle's key code is necessary if you need to replace your car keys through a dealership or locksmith. Your vehicle's key code is usually stored in your owner's manual, as lo...When it comes to code editors, developers have a plethora of options to choose from. Among the popular choices is VS Code, a lightweight and powerful code editor developed by Micro...HONDA ODYSSEY 2017 OIL PRESSURE SENSOR REPLACEMENT CODE P3400 CYLINDER DEACTIVATION SYSTEM BANK 1In the world of online shopping, consumers are always on the lookout for ways to save money. Coupon codes and promo codes are two popular methods that shoppers use to get discounts...May 4, 2022 by Jason. P3497 is a generic OBD2 trouble code. It indicates that your Honda Pilot’s cylinder deactivation system has a performance issue on the bank 2 side (we cover what a bank is below if you don’t know). It is a very common code to see in Honda-made cars, vans, and trucks. P3497 by itself is not a breakdown risk.If the pressure switch is what the problem is, the P3400 should turn into a P3497, which is the same code but instead of bank 1 it's bank 2. Then you know for sure the switch is bad. As for continuing to drive it, it should still be okay to drive as long as the engine is still running fine and not running rough or anything. 2. Reply. RedDom1023.The P3400 code is extremely broad, and it indicates only that something has gone wrong with cylinder deactivation. That means it should come with extra codes that will indicate exactly what has ...We're at about 70k, and we've had both lights come on together twice now. One thing, could be coincidence I guess, is it happens at basically the same spot in the road on the way home. We live on a gravel road with a fairly steep climb that has a few sections of washboards that I'm betting engage the VTM. The P3400 code is the bummer though.To diagnose the P3400 2018 Chevrolet Silverado 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.

So my P3400 code is most likely NOT about defective components, but rather is about sub-standard workmanship and out-right shoddy and unacceptable product from a machine shop. Windy City machine shop in Chicago sold me these re-built heads with the claim that they were plug and play ready!

Ask Your Own Honda Question. Low and or dirty engine oil can cause the code P3400 to set for sure. This system uses oil pressure to activate the Valve Pause System (VPS) and if the oil level is low, the code will set. That being said, I would clear the code since you had the oil changed and see if the code returns.What are the symptoms of the P3400 code? Check Engine Light is on; Engine is vibrating; How does a mechanic diagnose the P3400 code? Make sure engine oil levels are correct. Also make sure that the engine oil pressure is correct.This is a little basic video i made on p3400. There is a troubleshooting guide in the honda service manual, but an oem rocker arm oil pressure switch and oring is only about $27. Takes a couple minutes and is worth a try. Highly recommend a vcm muzzler my mpg went up 1mpg. But you will still get a p3400 code even with a muzzler unfortunately.6 posts · Joined 2024. #1 · Jan 8, 2024. has anyone encountered a reoccurring p0106 and p03400. The truck is a 2011 5.3 flex fuel. So far I have changed plugs, valve cover gaskets, maf sensor, map sensor, intake manifold gasket, and cleaned throttle body to know avail. I have checked all lines and can't see leaks and am getting proper signal ...Sorry my audio was recording through one channel only on this and a few of my other recent videos. I just fixed the problem for all my future videos, but I ... Honda setting code #P3400 and #P3497 valve pause System stuck off both Banks. If these codes set in your Honda and you have a check engine light on before sp... Kode P3400 terkait dengan sistem Variable Valve Timing (VVT) yang bertugas mengatur timing katup mesin untuk performa dan efisiensi optimal. Kode ini biasanya menunjukkan masalah pada sistem VVT, seperti katup kontrol oli yang rusak, tekanan oli rendah, atau sensor posisi poros bubungan yang tidak berfungsi.The P3497 code refers to the cylinder deactivation system on bank 2. The Engine Control Module (ECM) commands the system to deactivate specific cylinders to improve fuel economy. The deactivation is achieved by not allowing the intake and exhaust valves to open on the selected cylinders. The deactivation lifters contain spring-loaded locking ...Sort by: Littleone3685. • 6 yr. ago. First, check your engine oil level, if it low it can set that code p3400 Rocker arm oil pressure switch malfunction (bank 1, firewall side). Most likely a defective pressure switch if the oil level is good. 3. true.

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Hell. My first post whoo. Anywho i work for honda (12yrs) p3400 is due to low oil or pressure switch bad. Your v6 burns oil and will continue to do so its enitre life due to the vcm design and low tension piston rings honda uses for better fuel economy.May 2, 2022 by Jason. P3400 is a generic OBD2 trouble code. It indicates that your Honda Pilot’s cylinder deactivation system has a performance issue. It is a very common code …Codecademy's premise might not sound like a Cinderella story, but it's still important. Many of the nearly 100 “coding bootcamps” that offer full-time, in-person instruction in the...Performance seemed fine. I pulled intovmy garage and pulled the codes and it came up P3400. I searched the forum and first thing it said to check was the oil level. ... However, CEL code for the VCM issue is P0301, P0302, P0303, or P0304. Now, the deal is you get free repair for first 8 years of ownership, regardless of miles, if you get one of ...DTC pulled was "P3400". There was a problem with the oil pressure sensor on the rocker arm. Fairly common issue. Before replacing the sensor- CHECK OIL LEVEL... Low oil will throw this code also. More info - Switching It Up! Honda Oil |Pressure Switch Issues - ALLDATA. Part is $20-30. Labor is 5 minutes.Nov 19, 2023 · Regarding the P3400, like I said before, as long as the engine is running fine, don't worry about that yet. It might not even be an actual issue. The code is for the VCM system on the rear bank. For diagnosing that, the first step is to check the oil level and make sure it isn't low. If it is, that can cause issues like this since the system is ... A P3400 code on my 2010 Odyssey with 220K miles led me to this excellent thread. My experience rates somewhere between unusual and weird. While 500+ miles away from home, the check engine light came on. Pulled in to an AutoZone and found myself two quarts down on oil. Topped off with 5W20 high-mileage oil, translated the … P3400 Chrysler Code Meaning, Causes, Symptoms, & Tech Notes. Engine-Codes - Chrysler - P3400 Chrysler. P3400 Chrysler Code - Multiple Displacement System Rationality Bank 1. - Code Popularity: 17,235 Views. - Repair Importance Level: 3/3. - Repair Difficulty Level: 3/3. What is this? There are many situations where you can find yourself needing to look up a ZIP code. Maybe you’re trying to mail a letter but only have the recipient’s street address. Perhaps you’...Feb 12, 2017 · After having a code reader put on the car in addition to the P0420 code was a P3400 code. After having the car combed over by a shop I trust they advised me to have the "Rocker Arm Oil Pressure Switches on the valve cover" replaced, 2 $30 parts so I was hopeful this would fix the issue and there would be no more problems. 1 post · Joined 2019. #1 · Oct 27, 2019. So I just recently ran into the p3400 code on my 2014 Honda Pilot witch turn out to be a faulty rocker cam oil pressure switch. I took the sensor out and cleaned it with a bit of degreaser and air put the sensor back in and everything is working fine I did a bit more research into the problem and a lot ... ….

Your vehicle's key code is necessary if you need to replace your car keys through a dealership or locksmith. Your vehicle's key code is usually stored in your owner's manual, as lo...Sorry my audio was recording through one channel only on this and a few of my other recent videos. I just fixed the problem for all my future videos, but I ...1812 posts · Joined 2007. #9 · Jan 25, 2010. P3400-MDS RATIONALITY BANK 1. When all criteria has been met, power is supplied to each MDS Solenoid when the engine is making a transition from 8 cylinder mode to 4 cylinder mode.The exact repair procedure to fix the P3400 code in a Honda Pilot depends on the underlying cause. The most common solutions include: Replacing the cylinder deactivation solenoid valve: If the solenoid valve is faulty, it will need to be replaced with a new one. Repairing or replacing damaged wiring or connectors associated with the solenoid valve.Jan 16, 2024 · The exact repair procedure to fix the P3400 code in a Honda Pilot depends on the underlying cause. The most common solutions include: Replacing the cylinder deactivation solenoid valve: If the solenoid valve is faulty, it will need to be replaced with a new one. Repairing or replacing damaged wiring or connectors associated with the solenoid valve. May 2, 2022 by Jason. P3400 is a generic OBD2 trouble code. It indicates that your Honda Pilot’s cylinder deactivation system has a performance issue. It is a very common code to see in Honda-made cars, vans, and trucks. P3400 by itself is not a breakdown risk. Your Pilot’s engine will run just fine on all of its cylinders.Sort by: Littleone3685. • 6 yr. ago. First, check your engine oil level, if it low it can set that code p3400 Rocker arm oil pressure switch malfunction (bank 1, firewall side). Most likely a defective pressure switch if the oil level is good. 3. true.I have a 2015 odyssey that the check engine light came on. Check with OSB reader and get p3400 code. Change oil pressure switch on bank 1 but still have CEL and code. Any ideas what else it could be? Oil level is fine. whats the part number for the part you replaced? check the wiring harness for any rodent damage.Dynaboard built a low-code web application development tool to bring together product managers, designers and developers in a single tool. Dynaboard founder Alex Kern has been prog... P3400 code, If the oil level is low, the code will set. The VPS system has three modes: 3-cyl, 4-cyl, and 6cyl operation. The system consists of three (3) oil control solenoids and two oil pressure switches. A repeated P3400 or P3497 may indicate a failed component in one of the two (2) VPS assemblies., May 2, 2022 · May 2, 2022 by Jason. P3400 is a generic OBD2 trouble code. It indicates that your Honda Pilot’s cylinder deactivation system has a performance issue. It is a very common code to see in Honda-made cars, vans, and trucks. P3400 by itself is not a breakdown risk. Your Pilot’s engine will run just fine on all of its cylinders. , Oil Pressure sensor - https://amzn.to/3MWyMILit should work on the honda odyssey around the same model years with the v6 engine.As an Amazon Associate I ear..., A stored code P3497 means that the powertrain control module (PCM) has detected an abnormality in the cylinder deactivation system for engine bank 2. Bank two denotes the bank of the engine which doesn't contain the #1 cylinder. The location of the number one cylinder varies by make and model. Consult your service manual (or alternate source of ..., Mazda DTC P3400 Related Service Bulletins. Home Diagnostic Trouble Code P3400 Mazda. 🔍. The following TSBs of Mazda are related to DTC P3400. 2016 Mazda CX-3 Engine and Engine Cooling TSB Details …. 2017 Mazda CX-3 Engine and Engine Cooling TSB Details …. 2018 Mazda CX-3 Engine and Engine Cooling TSB Details …., Honda Odyssey is a popular choice among many minivan buyers but has technical errors! What Causes Errors on the Honda Odyssey? A weak battery. If your Honda Odyssey won’t start or cranks slower than usual, the problem is a weak or dead battery., May 2, 2022 by Jason. P3400 is a generic OBD2 trouble code. It indicates that your Honda Odyssey’s cylinder deactivation system has a performance issue. It is a very common code to see in Honda-made cars, vans, and trucks. P3400 by itself is not a breakdown risk. Your Odyssey’s engine will run just fine on all of its cylinders., The P3400 code typically appears when the system is unable to activate or deactivate cylinders as intended. One common cause of this issue is a malfunctioning oil pressure switch or solenoid valve. Another possible cause is …, go with 100% confidence that your van is A-OK. those P3400 codes mean that the VCM is not working for whatever reason, which is actually better for your engine. All it means is that the ECO mode tried to activate and failed to. The van is happy to drive with that feature disabled. Enjoy the rest of your vacation., The P3400 code is an engine error signifying “Cylinder Deactivation System – Bank 1.”. When the PCM (Powertrain Control Module) sees a fault or malfunction in the cylinder deactivation system, it will stop working as intended. Any component that stops the system from working can cause this code., I have a 2015 odyssey that the check engine light came on. Check with OSB reader and get p3400 code. Change oil pressure switch on bank 1 but still have CEL and code. Any ideas what else it could be? Oil level is fine. whats the part number for the part you replaced? check the wiring harness for any rodent damage., Bar codes are a machine-readable representation of data. They have expanded in complexity from the original data representation in varying widths and spacing of vertical lines to t..., The new AirVote app lets a small business get instant and valuable customer feedback by using a QR Code for contactless interactions. Customer feedback is now more important than e..., The P3497 code refers to the cylinder deactivation system on bank 2. The Engine Control Module (ECM) commands the system to deactivate specific cylinders to improve fuel economy. The deactivation is achieved by not allowing the intake and exhaust valves to open on the selected cylinders. The deactivation lifters contain spring-loaded locking ..., Meet the Experts. I have a 2016 cheverolet camaro 3.6 l v6 and it has a code p3400 any ideas please. 360000. 36000. Chat is completed - Answered by a verified Chevy Mechanic., Video shows how to fix P3400 check engine light code in Honda Vehicle. A Check Engine Light (CEL) code showed up on my 2010 Honda odyssey. The P3400 code rea..., The Honda Odyssey P3400 code refers to a specific engine trouble code related to the Variable Cylinder Management (VCM) system. This code indicates a problem with the VCM system, which is designed to improve fuel efficiency by deactivating cylinders during certain driving conditions. However, the P3400 code signifies that there is a malfunction ..., Oct 22, 2022 · P3400 is an engine diagnostic code that indicates ‘Cylinder Deactivation System – Bank 1’. When the Powertrain Control Module (PCM) detects an issue, malfunction, or failure in any part or element of the system that prevents the cylinder from working normally, this code is activated. Note that the code can also be engaged when any portion ... , If the pressure switch is what the problem is, the P3400 should turn into a P3497, which is the same code but instead of bank 1 it's bank 2. Then you know for sure the switch is bad. As for continuing to drive it, it should still be okay to drive as long as the engine is still running fine and not running rough or anything. 2. Reply. RedDom1023. , Kode P3400 terkait dengan sistem Variable Valve Timing (VVT) yang bertugas mengatur timing katup mesin untuk performa dan efisiensi optimal. Kode ini biasanya menunjukkan masalah pada sistem VVT, seperti katup kontrol oli yang rusak, tekanan oli rendah, atau sensor posisi poros bubungan yang tidak berfungsi., 6 posts · Joined 2024. #1 · Jan 8, 2024. has anyone encountered a reoccurring p0106 and p03400. The truck is a 2011 5.3 flex fuel. So far I have changed plugs, valve cover gaskets, maf sensor, map sensor, intake manifold gasket, and cleaned throttle body to know avail. I have checked all lines and can't see leaks and am getting proper signal ..., 17453 posts · Joined 2020. #2 · Oct 3, 2020. P3400 Honda - Valve Pause System Stuck Off Bank 1. Most common cause is the oil pressure switch on the drivers side head needs replacing. Part# 37240-R70-A04. But check the other things listed in the link. 2017 Pilot EX-L 2wd (65k); (2) 2012 V6 Crosstour 2wd (122k, 311k); 2015 Nissan NV …, Honda Odyssey is a popular choice among many minivan buyers but has technical errors! What Causes Errors on the Honda Odyssey? A weak battery. If your Honda Odyssey won’t start or cranks slower than usual, the problem is a weak or dead battery., 1480 posts · Joined 2005. #1 · Nov 28, 2021. Just curious - we got the infamous P3400 code while out of town (had my wife get the code checked at a parts store since I wasn't on the trip) - drove fine all the way home (had her check oil level which was fine (I had checked everything before she left, so figured it would be) - got it back home ..., Oct 30, 2015 · First, check your oil level and make sure its correct. Low oil level can cause this P3400 code to set. A loose gas cap and/or dirty cabin air filter WILL NOT cause this P3400 code to set. The most obvious symptom was that the Odyssey was operating in 3 cylinder mode nearly ALL the time. , Just like yours, it was still driving fine without any issues. I got back home and found that the code was P3400. I cleared the code, and it did not come back immediately, and it has still remained off over 5 months later. I'm not sure what caused it initially as the oil level and quality were both good, but it's been fine since then., 1 post · Joined 2019. #1 · Oct 27, 2019. So I just recently ran into the p3400 code on my 2014 Honda Pilot witch turn out to be a faulty rocker cam oil pressure switch. I took the sensor out and cleaned it with a bit of degreaser and air put the sensor back in and everything is working fine I did a bit more research into the problem and a lot ..., The code is a P3400 for cylinder deactivation. It's running fine. Advertisement. Answer:DTC P3400 tells us the PCM has seen an engine performance problem while running in V-4 mode. The PCM ..., P3400 code on scanner. 08 ram 1500 with 5.7 engine. Truck runs but tends to speed up and slow down itself while driving. Truck runs but tends to speed up and slow down itself while driving. At low speeds i hear a slight clunking sound until all 8 cylinders are running, Honda TSB 13-055. The MIL comes on with one or more misfire DTC (s) P0301 thru P0304 (Number 1-4 cylinder misfire detected). DTC P3400 (rocker arm oil pressure switch B) and/or P3497 (rocker arm oil pressure switch C) may also be stored. During a cold start, the engine oil pump outputs high oil pressure., Jul 13, 2016 · DTC pulled was "P3400". There was a problem with the oil pressure sensor on the rocker arm. Fairly common issue. Before replacing the sensor- CHECK OIL LEVEL... Low oil will throw this code also. More info - Switching It Up! Honda Oil |Pressure Switch Issues - ALLDATA. Part is $20-30. Labor is 5 minutes. , Quick overview of cause and fix for a P3400 error code in a Honda. Link to article: https://www.backyardmechanic.org/how-to-fix-honda-engine-error-code-p3400/, The P3400 code is an engine error signifying “Cylinder Deactivation System – Bank 1.” When the PCM(Powertrain Control Module) sees a fault or malfunction in the cylinder deactivation system, it will stop working as intended. Any component that stops the system from working can cause this code. So, what is … See more