UPDATE: This time around, dealer found a different code and replaced my injectors. We'll see how long that particular fix lasts.
2016 Pilot EX-L AWD with about 144k on the clock. Got the "Emission Systems Error" in early November. It popped up for maybe 3 or 4 drives, and then it went away. Took it to my local Honda dealer. They checked the code and based on the code, they applied a software update and checked the compression on all cylinders. Compression checked out, so they gave me back the car. Drove it for roughly a month, no problems, but I did notice my gas mileage seems worse than it normally is. I got the Emissions systems error again last week. This time, I drove it straight to the dealer to show them it was back. Made an appointment for today to get it checked again. By this time, the warning has gone away, but I assume they can still pull the code and tell me what caused it. I am also going to assume that it is a different error code? I mean, they applied a software patch, so the same code and the same problem shouldn't be happening again, right? I am hopeful that they decide to just replace whatever parts are covered under the warranty, so I don't have to go back for a third time.
Leads me to a question: Has anyone else been back multiple times for the Emission Systems Error? Did they ever just finally replace the catalytic converter, or the fuel injectors?
I'm hoping to not drag this out until 150k miles and then they won't honor the extended warranty when it happens again. I get the feeling that if the problem comes up for a third time, I am simply going car shopping... at the Toyota dealership. And it pains me to say that because my last 5 cars have all been Hondas.