[RJ_WI78]

I was driving my Passport with ~2,600 miles on the clock. I had been at highway speeds for approximately 2 hrs with eco mode turned on. The highway has some moderate terrain but nothing too crazy. I pulled off the highway to get gas and as soon as I got down to around 20-30mph, the malfunction indicator light started rapidly blinking and the engine began running very rough until I was able to pull over. I sat in a parking lot for 10-15 minutes with the engine off. Once I restarted, the warning light was off and the problem did not reoccur. The dealer said the vehicle did not save any codes so they can't figure it out.

My auto idle stop has also apparently quit working. I noticed it a while back but thought it was perhaps due to cold weather, however I was in another Honda this weekend that routinely turned off at stoplights in the exact same conditions as I drive my vehicle.

I have another long road trip coming up and I'm really not sure I'm comfortable driving it if this issue is going to persist. Any ideas or similar circumstances?

 

[Ebbyjay]

Well I can only comment on part of your issue that being the auto start stop ....I thought mine had quit working too but then I started paying super close attention to it and read up on it , auto start stop Will only engage if : the seatbelt in buckled , your wheels are straight and not turned any degree , your fan speed is set to low , the vehicle as reached normal operating temperature , and your foot is firmly pressed on the brake. I’ve noticed in mine ...apparently I’m a “light braking guy “ that it will display a message saying “fully depress brake pedal for auto start stop to work “ even when I’m at a full stop , I’ve noticed that if I put more pressure on it while sitting at a stop that it will work every time. I feel the passports have the most finicky brake pedal and I still can’t get a good feel for it. As for as the vehicle running rough after running on cruise for a significant amount of time ...many things could factor into that , I was a service writer for a Mercedes dealership and the 2016 e class sedans had this issue a lot , someone had their cruise set and then went to pass a car and the checking engine light would flash and car would run rough ...after restarting it ran fine , we could never duplicate it or find the cause.

 

[RJ_WI78]

Well I can only comment on part of your issue that being the auto start stop ....I thought mine had quit working too but then I started paying super close attention to it and read up on it , auto start stop Will only engage if : the seatbelt in buckled , your wheels are straight and not turned any degree , your fan speed is set to low , the vehicle as reached normal operating temperature , and your foot is firmly pressed on the brake. I’ve noticed in mine ...apparently I’m a “light braking guy “ that it will display a message saying “fully depress brake pedal for auto start stop to work “ even when I’m at a full stop , I’ve noticed that if I put more pressure on it while sitting at a stop that it will work every time. I feel the passports have the most finicky brake pedal and I still can’t get a good feel for it. As for as the vehicle running rough after running on cruise for a significant amount of time ...many things could factor into that , I was a service writer for a Mercedes dealership and the 2016 e class sedans had this issue a lot , someone had their cruise set and then went to pass a car and the checking engine light would flash and car would run rough ...after restarting it ran fine , we could never duplicate it or find the cause.

I did locate the list of conditions for the auto idle to function and exhausted every issue scenario. The dealer called this morning and said they replaced the battery and it seems to have solved the problem when they test drove. Hopefully this is the solution and it doesn't stop working again. I'm still not comfortable with the other issue but there's not much I can do at this point.

 

[carlc376]

It might be related to this issue, it was recently posted on this site. Trouble with the cylinder reduction mode

 

[rammer1010]

I was driving my Passport with ~2,600 miles on the clock. I had been at highway speeds for approximately 2 hrs with eco mode turned on. The highway has some moderate terrain but nothing too crazy. I pulled off the highway to get gas and as soon as I got down to around 20-30mph, the malfunction indicator light started rapidly blinking and the engine began running very rough until I was able to pull over. I sat in a parking lot for 10-15 minutes with the engine off. Once I restarted, the warning light was off and the problem did not reoccur. The dealer said the vehicle did not save any codes so they can't figure it out.

My auto idle stop has also apparently quit working. I noticed it a while back but thought it was perhaps due to cold weather, however I was in another Honda this weekend that routinely turned off at stoplights in the exact same conditions as I drive my vehicle.

I have another long road trip coming up and I'm really not sure I'm comfortable driving it if this issue is going to persist. Any ideas or similar circumstances?

the more it happens the worse it gets!!!! My husband is experiencing the same sorts of issues with his new 2021 Honda passport. He has 2000 miles on it and when he is on long trips approx (4hrs) he is having to pull over and turn the car off and back on to clear the lights so he can drive it again. We have already had it in to the dealership and they are saying they cannot see any codes when they hook it up. This past weekend he had the worst incident that while he was driving all the lights on the dashboard started to come on and the truck slowed down. This time when he came to a stop and turned it off and back on the lights stayed on and the truck would not physically drive over 55 MPH. He drove it right to the dealership and of course Honda is saying nothing is registering when they hook it up. The had a mechanic drive it to try to recreate the same scenario that happened to my husband without success. They called and gave my husband the lame excuse that he needs to be putting better gas in truck. I have a Pilot and use the same as that my husband uses so this is just bullshit. They said they have replaced the fuel injectors and want my husband to drive it this weekend on his long trip again and we are both very leery of this as we will be dealing with him on the side of the road again this weekend. We are claiming we have a lemon at this point and it doesn't sound like Honda wants to give us a new SUV. So disappointed in the lack of customer service from this dealership.

 

[linkdude64]

So disappointed in the lack of customer service from this dealership.

I would say as soon as the lights pop up again, get out your phone and start filming - doesn't matter if the dealer can't reproduce it at that point. Film yourself depressing the gas pedal, it not going over 55, as you're calmly and factually narrating through what you're doing, all of the lights, etc. Once you have evidence, I'd imagine that they would be at a loss to deny your claim that it is happening, and you could mention that you will talk to Honda Corporate/Legal about a class action lawsuit, as other owners are experiencing the same thing, and that might get their attention/get you the customer service you need.

 

[Gray_Beard]

Sounds to me like a VCM issue.

 

[Moab Junky]

I would say as soon as the lights pop up again, get out your phone and start filming - doesn't matter if the dealer can't reproduce it at that point. Film yourself depressing the gas pedal, it not going over 55, as you're calmly and factually narrating through what you're doing, all of the lights, etc. Once you have evidence, I'd imagine that they would be at a loss to deny your claim that it is happening, and you could mention that you will talk to Honda Corporate/Legal about a class action lawsuit, as other owners are experiencing the same thing, and that might get their attention/get you the customer service you need.

Great idea.

 

[Voodoo72Child]

I did locate the list of conditions for the auto idle to function and exhausted every issue scenario. The dealer called this morning and said they replaced the battery and it seems to have solved the problem when they test drove. Hopefully this is the solution and it doesn't stop working again. I'm still not comfortable with the other issue but there's not much I can do at this point.

The battery’s in all Honda products are a problem i own a 19 si sedan and my car went into limp mode why trash battery. I removed it replaced it with an interstate battery haven’t had any issues since then. That could have been your issue hope its been resolved