AJ28
Senior Member
- First Name
- Anthony
- Joined
- Oct 28, 2017
- Threads
- 22
- Messages
- 106
- Reaction score
- 114
- Location
- California
- Vehicle(s)
- Honda Civic SI 2017

- Thread starter
- #1
Hey all,
I recently swapped back to stock FP/DP after running a PRL FP/DP Catted combo. I've had the PO139 CEL when it was installed and I'm still getting it... I had ktuner and flashed back to stock tune etc.
Currently, I have on stock FP/DP with a magnaflow exhaust. Car runs great as well. Would this be upper stream o2 sensor? keep in mind, this is a 2017 honda civic si with 191k miles. lol
Thanks in advance.
I recently swapped back to stock FP/DP after running a PRL FP/DP Catted combo. I've had the PO139 CEL when it was installed and I'm still getting it... I had ktuner and flashed back to stock tune etc.
Currently, I have on stock FP/DP with a magnaflow exhaust. Car runs great as well. Would this be upper stream o2 sensor? keep in mind, this is a 2017 honda civic si with 191k miles. lol
Thanks in advance.
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