2016~2023 Mazda CX-9 Intermittent revving and engine light issue

[Mattar]

I have a 2019 CX9 that with intermittently rev in park for no apparent reason. The engine light has also been turning on randomly. It's been taken to a mechanic to assess, they put in a new oxygen sensor but the problem hasn't been resolved. Any ideas?

 

[hw4ng3r]

Do you have the DTC for that check engine light we can go on?

 

[Mattar]

No, but I'll ask my mechanic and if he has it I'll post it here

 

[youri]

It couls be a lot of things:

If the DTC match these codes, it could be this TSB:https://static.nhtsa.gov/odi/tsbs/2023/MC-10232266-0001.pdf

Or this one:https://static.nhtsa.gov/odi/tsbs/2022/MC-10228648-0001.pdf

Or this one: https://static.nhtsa.gov/odi/tsbs/2021/MC-10199713-0001.pdf