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Roomba keeps giving error 2 even when brushes are clean

have a 5xx ROOMBA keeps getting error 2 CLEAR BRUSHES. Brushes are clean and unie will work for maybe 10 - 15 minutes then get same message. when checking brushes they are clean. This keeps repeating.

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I’m having this problem right now! And I can’t get them brushes in to where the top piece closes over them properly either. We worked on it at least an hour!

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Late to the game but if it helps anyone else in the future, I just dealt with this even after I made sure the brushes were clean. I have long hair and a dog so I knew there had to be little some pocket of hair in there that I couldn’t find.


What fixed it:

I took the whole thing apart to give a good cleaning but two things made a WORLD of difference

1. While disassembled, I popped the front wheel assembly off and then took the front wheel out of the assembly. The metal posts that hold that ball in the assembly where completely twisted with hair (like a spool of thread). I was able to slip the hair right off and then pop the wheel back in the assembly

2. This one was HUGE: On my particular model, when you remove the brushes to clean them, there’s the square end and then there’s the other end with the two plastic prongs (mine is green and yellow). On a whim, I pulled off the yellow prong part (the side opposite of the square end) and BAM: dense spool of hair. I have no idea how it got into that tiny little space but removing it from both brush assemblies completely fixed it for me. Good luck!

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Andrea, your #2 suggestion was the issue and fix for me. Thank you! - Den

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Great, suggestion No. 2 fixed my problem as well!!!

Thanks a lot!!!

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I had the same error 2 problem of tangling. Bought set of new OEM iRobot rollers. Fully cleaned, I mean I disassembled the 880 model. No blockage of anything. I even looked inside the gearbox case that drives the rotating rubber brushes. Sparkling clean and plenty of the original grease. Not a trace of any hair or dirt. Turned it loose with with the new brushes after the cleaning. Same error code of tangling after 10 minute run time. I contacted customer service and they recommended a new brush roller assembly. I bought and installed it easily. Started the 880......10 minutes later, same error code of tangling. This machine is as clean as brand new. So, I figured it must be the battery pack is worn out after 4 years of use and does not produce enough amps to turn the rollers when on carpet. Awaiting the battery pack. This is my last attempt at fixing the 880. If this does not fix it, I’m moving on to a different brand. I will post a result after the new battery.

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I was wondering about the battery too. I'm on my second battery. Have new brushes, wheels, cleaned the sensors and obviously (since my hobbies are dogs and sewing) cleaned out every thread, hair and fluff with tweezers. Mine is also 880 and I'll watch for your post. Thanks

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Number #2 did it for me as well

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Have you tried to check the rollers carefully right after getting the error 2? For some reason Roomba is thinking that something is stuck in the robot vacuum rollers as they creating the resistance. If you have it for a while it might be that the inside gears are getting resistance from dirt. You can see in this video how to repair it.

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I have done everything and it is still coming up with the error. I cannot work it out. Gears are clean, lubicated, I have completely cleaned it, replaced brushes but cannot find the issue.

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Something is impeding the drive train. Usually, it is the brush loaded with stuff it picked up. If the brush is clean, it obviously is not a clogged brush. The next step requires you to disassemble Roomba. Take brush, roller, and brush keeper. Easy part. Remove the bottom plate. It is held on with screws. Don’t lose them. You also mustunscrew and remove the circular sweeper thing. The bottom should come off. Now you must remove the entire piece that holds the brushes. Careful because the motor wires are attached. There is enough slack that you need not - and should not- unwire the motor. The piece that holds the brushes comes out. But not easily. There is a spring plastic catch right and left. You must depress both simultaneously (takes two hands), grip the brush holder piece (third hand) and hold the body of roomba attune rear (fourth hand), and pull the assembly out (fifth hand). People with five hands find this easy. It is almost impossible with only two hands. The entire green thing comes out. Including the gear box on one side. Carefully disassemble the gear box. Five or six tiny screws to keep track of. Lift off the cover from the gear box. There are several Teflon gears. They just slide off. Remember which one came from where. Likely, each gear will have accumulated sludge, and the axles will have strangled themselves I loose threads. Clear everything.. put the gears black in. DO NOT CLOSE UP YET! Spray everything in the gear box with WD40! Very important Now close the gear box and reassemble everything. The two front spring clips on the front of the brush housing will fight you. There should no longer be error 2. The brushes weren’t clogged. The gears were gummed up. Stuff migrates into the gear box over time. You have to execute this goat rope every year or two. There is not much to the Roomb@. All that’s left is the battery, which is easy to replace, and the motor, which is easier to deal with than the gear box was. Most of the functionality is in the electronics.

Almost none of these instructions come with Roomba or are in the manufacturer’s website. Phone help is clueless. You do not need to trash the Roomba or pay for repairs. Good luck. Remember that persistent Error two does not mean that the brushes need attention. It means that the drive train is clogged!

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Thank you!! WD40 was the key for me. I cleaned everything and put it back together before reading this. It still didn't run long without Error 2. I opened everything up again and used WD40 and then it ran fine. I still get a brush error sometimes because I have thick long hair, but that's just about regular brush cleaning.

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Thank you, gears were so bad! Soaking, toothpick cog cleaning, lubricant, she's purring like a kitten. I was able to take out the housing with two hands and two knees.

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We had same problem. Make sure the little”string” between the pully on end of motor and middle of blue chassis. If it missing that’s the problem. Roomba website shows where it is We used a piece of nylon thread/ thin fishing line She’s working great.

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Argh this is an annoying error. I kept facing it as well. It’s super important to check the rollers - that is the first thing I would suggest to do. Usually, that is the problem. The rollers are probably just stuck or dirty. Otherwise, google troubleshooting for roomba. There are many guides available. I saw this one. That’s what I did.


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I have completely disassembled mt Roomba 500. Cleaned brushes meticulously, disassembled the drive train. Cleaned gears and axles. Still get Error 2! I infer that the resistance is upstream of brushes and gears. Perhaps the motor shaft itself. That will be a very tough repair for me

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Pull out the brushes and pull off the yellow part and clean out the yellow under side and around the spindle on both brushes. Fixed my issue.

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So I received this error. I removed and cleaned the rollers as well as the entire cage, this did not fix the issue. I replaced the rollers with new ones as the existing ones were not in the greatest of condition. Replacing the rollers did fix the issue.

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Interesting. I bought a whole new kit. Brushes, side brushes and filters. I cleaned everything very well before replacing all the above. Now, it starts saying there is a #2 error to check the brushes. They are sparkling new. So I decided to clean up the old rollers.. now it is working fine. I don’t get this at all. She doesn’t want the new rollers.

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The #2 error continually comes up after 5-10 minutes. Especially on the carpet. On the linoleum, she works well.

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@Lori Ann Laybourne, I have exactly the same problem! I bought the whole replenishment kit. And now error#2 comes up after a few minutes. When I change it back to the old rollers, no error! I'm wondering, is it the carpet? But why would the old ones work & not the new ones? I also noticed this blue sun-like light flashing. Never seen it before.

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Cleaning the front wheel fixed the issue for me.

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Does the front wheel spin freely?

If not, clean the front wheel

This fixed the problem for me :)

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I posted this a while back. The brushes are not the problem. The gears that drive the brushes are the problem. The gear train is inside a green housing on the left side facing Roomba front. Removing it is a pain, but it requires no special tools or skill. Removing the brush holder is a trial, but it is just spring loaded right and left. The problem is that you must depress the right clip with your right and the left clip with your left hand while pulling out the housing with your middle hand. At least three hands required. Then extract screws and pull off the side of the housing. Gears slip on and off easily. You will find an amazing amount of gunk, threads wound around axles, etc. You get Error 2 whenever the motor experiences excessive resistance somewhere in the drive train, not just the brushes! Before you put the gear cover back on, spray the inside with WD40. That should fix things for a long time. But eventually it will happen again.

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The main brushes are made of rubber and were rubbing against the left side of the compartment where they sit in on my unit. I took them out and pushed the inside of gear-like plastic hexagon bolt left and right until I correctly adjusted them to the center and that appeared to fix the problem. Remember anything that creates resistance on the brushes will trigger this code.

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My e5 Roomba was a little over a month ‘old’ when it started to leave clumps of hair around rather than pick it up. We have 2 German Shedders and 5 cats - and despite having to stop the machine to empty it every 15 minutes, it has still made an incredible improvement in reducing the hair and dirt on the floor. I figured it was time for a ‘deep clean’ - and indeed it was. I removed the rubber brushes and cleaned them with water, cleaned the dirt bin using water, changed the filter, removed and cleaned the front roller. When I was done (and everything dry), I set the Roomba to start. It ran for about an hour, and then got caught in a cord under a buffet. I pulled out the cord, and the pressed start. In two minutes it stopped with an Error 2 clear the brushes. There was nothing there, started it again, and in two minutes another ‘Error 2’.


I went through all the many good suggestions on this page - including removing the end bearings and removing the amazing amount of twisted hair underneath. I tried to be sure the rubber brushes were centered. Nothing seemed to work - I continued to get repeated ‘Clear the brushes’ messages after two minutes. I finally resorted to what I really didn’t think would work: I ordered the ‘replacement part kit’ with new brushes, sweeper brush, and filters.


I replaced the brushes and the sweeper brush. The Roomba now works again. It seems strange that the brushes would be bad after only 1 month. Perhaps that cord catch damaged them. Regardless - the new brushes fixed this problem for me.

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My Roomba i3+ was doing this exact same thing. I purchased it for Christmas, and the next day it started the "Clear the Brushes, Error Code 2" message. The Roomba tech support folks are sending new brushes, so I hope that works.

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I had the same issue

Some times I heard that my roomba tried to brush.. Just for a short moment just to give up..

I had to pull of the brush cage and re solder a wire that was loose on little engine (that's beneath the brush cage when the roomba is up side down) that seams to lift/lower the brushes (I'm not sure about that)..

Now it works like a charm

Easy like a plätt

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I have a Roomba 800 series, and has the rubberized roller “brushes”. Error 2 announced over and over, and a blue light on top of Roomba with a brush insignia. I took the entire machine down to parts, disassembled the roller gear box to see if it was clean. It was spotless and still had plenty of the original factory grease in the casing. The rollers seemed, but removed them and thoroughly clean them. Every piece and part of the machine was gleaming and clean. Reassembled. Turned Roomba 800 loose, error 2 clean brushes within 5 minutes. So, bought official iRobot replacement brushes. No joy. Same error 2 announced and continual blue brush warning light when Roomba is on my rather thin carpet. No clue why this problem recently developed and cannot be rectified.

Stumped in Atlanta.

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@starlifter777, I have the same problem but it only came up when I replaced the rollers with genuine iRobot Roomba ones coz I haven't replaced them for 4 years now and I was thinking maybe it would clean better with new ones. So I decided to put back the old rollers. And it works fine. But I feel bad for wasting money on the new ones that I cannot use due to the error.

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I was having very similar error reporting under the same conditions you have described. I went through a very thourough and deep cleaning process, full disassembly and a bit of dirt and dust, but nothing catastrophic enough to cause the roomba to continually shut down for reasons of error 2. I followed iRobot tech rep advice and bought new roller brush gear assembly. I put in the brand new unit assembly( very easy to do) and turned Roomba loose. Same error code and Roomba would shut down. So, I decided to replace the 4 year old battery. Popped in the new battery and fully charged up the new battery pack for about 7 hours. I let loose Roomba with new fresh fully charged battery pack and the error 2 of tangled brushes was no more. The unit ran for over 2 hours non stop and docked up to recharge. The old battery was the problem.

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This is an update to my earlier post. I had continual error code 2 of tangled brushes that stopped my 880 series every 10 minutes. But they are EXTREMELY clean. But I replaced them OEM brushes, an entirely new brush roller assembly from iRobot at their suggestion. I installed and thoroughly cleaned the machine. Started Roomba up…….same error code. So I bought a new battery pack, a Lithium Ion, non Roomba manufacturer, but had good ratings. SUCCESS!! The new battery solved the error code 2 tangled brushes and I probably wasted money on new rollers and roller brush assembly as well as wasting a significant amount of time doing extensive disassembly that required only a new battery pack. The lithium battery is much lighter which allows the Roomba to climb on board atop thicker rugs much easier and it runs for a at least 2 + hours before heading back to base for recharge, even though battery indicator is still green. I recommend make sure brushes are clean and the front wheel spinner is free to swivel. Then buy a new battery that fits your series of machine. Charge the battery fully. Do a reset of your Roomba. Then turn it loose for tangle 2 error free cleaning once again! The disassembly and extensive cleaning as well as new new parts did not solve anything. Only the NEW Battery fixed it for me.

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With my e5 model I had cleaned everything but I kept getting the error that the main brushes were stuck. I took the rollers out and popped the hexagon end off by just slightly folding down the plastic, grabbing it with pliers. It was completely wrapped with hair inside the actual brush roller.

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Ben さん、ありがとうございました!
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