A P0333 code popped up today. Some research indicates it may be in the intake, cyl head or block. Has anyone had experience replacing one of these sensors? Is this a relatively "easy" R&R? Would this be something an individual with mid-level automotive skills/knowledge be able to perform? The warning light in the dash is not blinking, but being an emissions related item, it advises repairs be done immediately(?) Any advise would be appreciated - actual locationof the sensor would be doubly so.....

 

There is a good video covering replacement at . The OEM part can cost around $150 but there are numerous 3rd party sensors that are much less in cost.

https://www.acurapartswarehouse.com/...ck_sensor.html

 

Thank you so much, John! I really didn't expect any kind of response - especially so quickly!
I'll check out what you have linked and suggested; I will keep you apprised.......

Cheechako

 

See if there is any access from below that might save you removing the manifold.

 

I meant to contact you last week; the knock sensor has apparently healed itself. I don't drive all that much anymore, so the car sat in the garage for a couple of days. When I did fire it up, the warning light did not appear. I've driven it several times since then with zero malfunction warnings. If it does pop-up again, I'll at least know what to do.
Thank you very much, John! There's a HUGE disparity in price for the sensor between what Honda wants for it, and what is readily available online - identical part numbers, "genuine Honda" and so forth. But you pointed me in the right direction, and for that I am grateful.

Mark in Idaho