chucksomerock
Well-Known Member
- 56
- 30
- Vehicle Model
- Civic EX
- Body Style
- sedan
Ok so this is a thread for a question answered by myself.
Yesterday, i was trying to remove the coolant drain bold on the engine block.
After a lot of unsuccessful attempts, I gave up and got the car for a test ride.
During that test drive, the car was slower than usual and during first and second gear acceleration, it hesitated a lot.
No CEL at that point. I told myself that I would stop at Honda to get that checked up.
This morning, the check emission system light came up. Took my obd2 reader and got a P0135 code.
Took the car to Honda and opened the hood with the technician. My oxygen sensor wasn't even plugged in!
I unplugged it in order to get it out of my way to try to loosen the coolant drain bold and forgot to plug it back.
You can see it unplugged on that picture I took while trying to remove the bolt. You can clearly see that the wire isn't plugged (blue rubber wire, should be on the black connector in the middle of the picture)
Anyway, lesson learned...
Yesterday, i was trying to remove the coolant drain bold on the engine block.
After a lot of unsuccessful attempts, I gave up and got the car for a test ride.
During that test drive, the car was slower than usual and during first and second gear acceleration, it hesitated a lot.
No CEL at that point. I told myself that I would stop at Honda to get that checked up.
This morning, the check emission system light came up. Took my obd2 reader and got a P0135 code.
Took the car to Honda and opened the hood with the technician. My oxygen sensor wasn't even plugged in!
I unplugged it in order to get it out of my way to try to loosen the coolant drain bold and forgot to plug it back.

You can see it unplugged on that picture I took while trying to remove the bolt. You can clearly see that the wire isn't plugged (blue rubber wire, should be on the black connector in the middle of the picture)
Anyway, lesson learned...