[M6ix]

.

 

[HondaHater1]

Fixed!! Had the exact same problem with my 2018 Odyssey EX but I didn't think it was a transmission problem rather a TPS or Throttle Position Sensor problem. To cut story short I reset and reprogrammed the TPS and here's what I did:

1. Removed the negative terminal of the battery for 10 mins. this will reset the TPS.

2. Reconnect the battery, turn on engine and turned off everything incl AC, RADIO ETC...Drove around for 5-to10 mins then parked and turned off engine to save data (note: during this 1st drive i already did not feel any hesitation on stop and go)

3. Drive the van again and this time with radio and AC ON. I drove for good 15 mins and van felt really good and responsive! Good luck! Hope this helps.

** When driving around, drive in a normal fashion and do not floor the pedal since you are reprograming the TPS ..drive around the block with lotsa stop and go.

4. Get a Beer!

Thanks for this, i will try it. I have the EXACT same thing @lilfish has pointed out. I have a 2020 Honda Odyssey, thank GD I leased it like with all other cars, and I was very happy with it until today when this happened. It took me a good few hours to find this thread that spoke about it. Sounds like from the post above that you simply REBOOTED the computer Usually solves many things, but i would think its not the same issue @lilfish was facing before he solved his car, nor the one I am facing, if the dealer had the car, there is no doubt they tried this simple method, no?

Anyhow, it just happen to be that my daughter just got her license and decided to go for a 2 hour drive calling me in the middle telling me about this for the first time, we have 9K miles on the car and purchased it in late 2019 (leased it). I am very disappointed with Honda. I would sell it, but i dont want someone else having the issue i am having, its not fair to them, so I am going to try the above method and hope it works. Honda having a car that the gas pedal when pressed does not seem to give gas to the engine is a scary thing and should be JUMPED ONTO by Honda.

When lease is over, i am going to try Toyota, but honestly, i think this new technology is just bound to have issues here and there.....

Out +++

 

[lilfish]

Thanks for this, i will try it. I have the EXACT same thing @lilfish has pointed out.

Thanks for updating this thread with your experience. Even though I sold mine, I've very interested to see if Honda will release a fix because we may get a van again in the future, and I want to know if Odyssey will be an option by that time or not. Please keep us updated!

 

[M6ix]

Thanks for this, i will try it. I have the EXACT same thing @lilfish has pointed out. I have a 2020 Honda Odyssey, thank GD I leased it like with all other cars, and I was very happy with it until today when this happened. It took me a good few hours to find this thread that spoke about it. Sounds like from the post above that you simply REBOOTED the computer Usually solves many things, but i would think its not the same issue @lilfish was facing before he solved his car, nor the one I am facing, if the dealer had the car, there is no doubt they tried this simple method, no?

Anyhow, it just happen to be that my daughter just got her license and decided to go for a 2 hour drive calling me in the middle telling me about this for the first time, we have 9K miles on the car and purchased it in late 2019 (leased it). I am very disappointed with Honda. I would sell it, but i dont want someone else having the issue i am having, its not fair to them, so I am going to try the above method and hope it works. Honda having a car that the gas pedal when pressed does not seem to give gas to the engine is a scary thing and should be JUMPED ONTO by Honda.

When lease is over, i am going to try Toyota, but honestly, i think this new technology is just bound to have issues here and there.....

Out +++

Just an update, it jas been almost 2 weeks since I did the reset and so far I haven't had any issues yet, in fact it feels like its getting better everyday as I drive, not sure how it works but maybe because its srill learning or programming how we drive. I actually had to reschedule my 1st service appt with the dealer since they cant find anything...i have another service sked next week and ill keep you posted how it goes but if the car drives as good as it is right now, I may need to cancel it again.

Trying to think how it got messed up, the only thing i can think of is the way if you wanna program your Throttle /Idle position, I think the pattern is ..1 Turn on the ACC... 2. after 2-3 secs turn on your engine that will put you on program mode.....now when we work on our car in the garage sometimes we do this patrern by accident...I sometimes just want the ACC on to listen to the radio...then I change my mind and just turn on the engine so I can use the car's Aircondition while cleaning especially the interior....now by doing so I ended up putting the Throttle/Idle position on PROGRAM MODE and I think thats how it get messed up, coz mine started after I detailed my Oddysey... just a thought.

 

[KITCHSC]

I have noticed exactly what you describe on my 2018 EXL. It is very startling and that 1 second delay is enough to make cross traffic too close for comfort. Then when it suddenly guns, your passengers think you are driving badly

It's not just with later models with 9 speed transmission. Our 2012 model has done this with its 6 speed transmission for almost all its life. I personally think there is a problem in the accelerator sensor, but have not raised the problem with Honda service locally. I was hoping someone else had the problem and knew of an answer!

 

[melfam]

I think for my case instead of reset manually, i got an appointment to perform this TSB 19-124, applicable for 9 speed transmission.

Adobe Acrobat

documentcloud.adobe.com

I had the TSB performed for the jerky shifting between 2-3, but the hesitation problem from the original post has become an issue. A BIG issue. Almost got my family and I killed or at minimum severly injured when turning off a side road onto a fairly busy higher speed road in the hill country of Texas.

This van is the worst piece of junk on the market. The infotainment system is terrible. Had the "fix" performed for the static over the radio and still have static over the radio so their fix did not work. Our 2017 Suburban was built and functioned so much better. Looking forward to the chip shortage being over so I can get rid of this Honda junk. I will never buy another Honda. Even my Audi A4 B8.5 with twice the miles is more reliable and safer than this van. Not to mention that both the Suburban and the Audi AC blew this Odyssey's out of the water on hot days.

 

[OEDRO Car Part]

This is a more difficult to explain question, it seems to be affected by several aspects, looking forward to the answer!

 

[avcarlton]

My wife and I got our first Honda Odyssey in Feb. 2020, a 2019 EX-L with navi which had about 50k miles already. We're having an intermittent issue with the accelerator and the dealer doesn't seem to even believe us, much less have any idea what might be causing this. I know we're not crazy because there is a similar thread here: hesitation on acceleration Since that thread was about a different generation, I thought I would start a new thread.

Basically, when starting from a stop - either dead stop or coasting stop, but after applying the brake, when you start gently pressing the accelerator, nothing happens for an inordinate amount of time. Likely only a second, but feels much longer when you're trying to make a left hand turn in front of oncoming traffic. The van may be barely rolling, because the brake isn't engaged, but you're only coasting with no response from the gas pedal. Then, after the short delay the engine feels like it is trying to catch up to where it should be based on the amount you've already depressed the pedal, and the van starts so fast the tires are peeling out.

This doesn't happen every time, and there are times the response feels like the van is a little heavy, but the pedal is doing something and is at least a smooth acceleration if not a fast one.

Pressing the pedal hard from the get-go doesn't seem to cause the issue, so if you're cool with racecar starts out of parking lots and at left hand turns then you might not ever notice the issue, but if you're trying to cart a family and not make anyone spill their drink then it may not happen every time, but likely at least once in every trip.

The dealer updated the computer when we took the van in and complained about this the first time, and it wasn't fixed by the software update.

Happens whether the eco drive mode is engaged or not engaged.

Has not happened yet when I have the hold break mode enabled, but I haven't tested this theory long.

This EXACT scenario happened to me two days ago. I was turning left and let off the break, and pressed the gas with no response from the engine as I slowly rolled into an intersection with cars heading towards me in both directions. I can’t decide if I want to wait for it to happen again and risk something horrible happening or just get rid of it. I took it to the dealership and of course, they can’t find anything wrong with it.

 

[lilfish]

This EXACT scenario happened to me two days ago. I was turning left and let off the break, and pressed the gas with no response from the engine as I slowly rolled into an intersection with cars heading towards me in both directions. I can’t decide if I want to wait for it to happen again and risk something horrible happening or just get rid of it. I took it to the dealership and of course, they can’t find anything wrong with it.

Sorry to hear that you've joined the club with those of us having this issue. Have you tried re-creating the issue as I was able to do here?

The issue is actually the gear shift between 1st and 2nd gear, but only when the pressure on the accelerator is released briefly and then pressed again. i.e. if you keep even pressure on the pedal while shifting from 1st to 2nd, there is no issue. If, however, you start to accelerate in 1st, then let off the gas pedal shift to 2nd and hit the pedal again there is a significant lag time before the throttle responds.

Once I figured this out in sport mode I could recreate the sensation in regular Drive mode every time by gently starting to accelerate, let off the pressure at about 5 mph and pressing the pedal again. This is why left hand turns are problematic, because you start to ease into the intersection let off the gas then try to hit it again to make the turn.

 

[OEDRO Car Part]

I also want to know what caused this, and look forward to the final result!

 

[avcarlton]

Sorry to hear that you've joined the club with those of us having this issue. Have you tried re-creating the issue as I was able to do here?

Yes, I did try to re-create it the way you described. It has not reoccurred.

 

[Ftrs]

I have noticed exactly what you describe on my 2018 EXL. It is very startling and that 1 second delay is enough to make cross traffic too close for comfort. Then when it suddenly guns, your passengers think you are driving badly

I noticed exactly the same in my 2018 EXL the van choke when I start from zero and I wanna rush through traffic

 

[18OdysseyLou]

Following:
My wife has recently been complaining about this issue, and I was in the car today when it happened. She immediately noted it to me, and I now know what she has been experiencing.
2018 exl 85k miles. I do believe she may have slightly let up on the accelerator just be fore the shift to 2nd. I feel it may be the learning software. It would be nice to be able to recalibrate the software to baseline as an owner. I don't feel like spending $$ to chase a ghost that cannot be corrected. If anyone has found a work around, other than the software reset from dealer, please share.
It is a weird transmission. However, it has been fine for us, other than these quirks. I did have to replace an EVAP solenoid, and had the injectors replaced under the extended warranty, because of a TSB where Honda extended the warranty due to debris during manufacturing of injectors.
I do feel our gas milage has been less since that repair.

 

[KtDub]

Hello! I have a 2018 Odyssey and my husband and I have noticed exactly what is described above ever since we first got the car. Thanks to the gentleman who was able to describe it so well above I was able to return to the dealer today to tell them exactly what is the problem and how to reproduce it where previously they have not taken me seriously. They are telling me now it is some kind of carbon build up in the engine, that someone came in earlier this week with the same problem and it has resolved with their engine cleaning process. $380, jeez. Will update after I assess if this had worked or not but I am skeptical …unless they made this car with a dirty engine? If this issue can not be resolved, I am trading this car in for a Sienna. My daughter is learning to drive and this car is not safe for a new driver.

 

[lilfish]

They are telling me now it is some kind of carbon build up in the engine,

I'm not a mechanic, but it seems a strange and isolated symptom if it's due to carbon build up. Keep us updated - I'm curious to know if this helps you. Hope they are able to resolve it! I finally sold mine, because I couldn't get this resolved, but am still following this because I may want another van in the future and liked everything else about the Odyssey.

 

[Hodna]

I'm not a mechanic either but did someone mention that carbon build up can be caused by the direct fuel injectors?

 

[DJVAN]

Remember back in the late 1970's through 1980's, that carbon buildup would cause run-on/dieseling after the engine was shut down... The manufacturers had to add anti-dieseling solenoids to the engines to stop the running on (and back firing that would shake your teeth. I have not seen anything like that now, but have a hard time understanding the fuel-injectors getting this clogged with carbon to cause this problem. Their really must be some dirty fuel or not having any cleaning agents in them for these people. It get's back to buying fuel from a reputable gas station and verifying that the station uses the cleaners needed to prevent this problem. The product added is called TOP TIER™.

 

[Hodna]

Hi DJVAN,

I remember that carbon used to build up around the valve seats and would glow red hot. The remaining air/fuel mixture would ignite from the red hot glow. You're right - with all this tech, they haven't overcome the problem. It just occurs elsewhere!

 

[YardleyFFL]

FWIW they did a throttle bottle reset and a transmission reset and the problem went away after the throttle body reset. I was able to repeat it by letting the van idle up to ~1.5k rpms before applying the gas. Always happened to my wife on the left turn on a downward sloping hill.

Ditto on the left turn from our downward sloping driveway.

 

[Holly26socal]

My wife and I got our first Honda Odyssey in Feb. 2020, a 2019 EX-L with navi which had about 50k miles already. We're having an intermittent issue with the accelerator and the dealer doesn't seem to even believe us, much less have any idea what might be causing this. I know we're not crazy because there is a similar thread here: hesitation on acceleration Since that thread was about a different generation, I thought I would start a new thread.

Basically, when starting from a stop - either dead stop or coasting stop, but after applying the brake, when you start gently pressing the accelerator, nothing happens for an inordinate amount of time. Likely only a second, but feels much longer when you're trying to make a left hand turn in front of oncoming traffic. The van may be barely rolling, because the brake isn't engaged, but you're only coasting with no response from the gas pedal. Then, after the short delay the engine feels like it is trying to catch up to where it should be based on the amount you've already depressed the pedal, and the van starts so fast the tires are peeling out.

This doesn't happen every time, and there are times the response feels like the van is a little heavy, but the pedal is doing something and is at least a smooth acceleration if not a fast one.

Pressing the pedal hard from the get-go doesn't seem to cause the issue, so if you're cool with racecar starts out of parking lots and at left hand turns then you might not ever notice the issue, but if you're trying to cart a family and not make anyone spill their drink then it may not happen every time, but likely at least once in every trip.

The dealer updated the computer when we took the van in and complained about this the first time, and it wasn't fixed by the software update.

Happens whether the eco drive mode is engaged or not engaged.

Has not happened yet when I have the hold break mode enabled, but I haven't tested this theory long.

YES!! it's gonna get us killed. It hesitates then launches us enough to screech tires. Or delays turning left, we're gonna get hit. Not all the time but when it does its uncontrolled. I took it in 3 months ago and since they couldn't "reproduce it" its supposed to be fine. It launched me out of my driveway upon the first soft push of the peddle to pull out. I almost hit the truck across the street. WHAT THE HECK CAN WE DO ? I made another service appointment and I'm requiring I get it fully in writing that they refuse to throughly break down the system and find the fault upon my safety concern. That way when I'm injured or injured someone else due to their dismissal they can be held responsible. I'm so angry.