normc

My 1996 Civic has a CEL with a code of P325. Looks like it is the knock sensor.

From searching around on the forums, I think I have found the location of the sensor. Looks like it should be just above the oil filter on the block. I didn't have an easy way to lift it up tonight, so I couldn't get under it to see how hard it is to reach. All of the pics I saw show the sensor on engines that are out. How hard is it to do the replacement? What else needs to be removed? Does the oil filter need to come off first?

I was thinking about ordering the part on-line. The car seems to be running fine, how bad is it to drive it till the part gets here?

Thanks for any help.

Norm

luke_1

the sensor is located under the intake manifold on the drivers side. you can get to it from the top, its not easy!

rehaf

P0325 is a code for a malfunction in the knock sensor circuit, meaning it could be the sensor or the wiring. Before you spend alot of money for a new knock sensor be sure to check for chaffed wiring or a bad connection at the connector.

The ECU uses input from the knock sensor to retard the timing if detonation occurs. I'm not sure what strategy it uses when it sees a fault in the circuit though. I think it should be ok to drive as long as you don't have a detonation problem to start with. Some manufacturers such as Mazda (on certain cars) will not even turn on the MIL/CEL for a knock sensor problem, it will only store a code.

normc

Good suggestion. I'll try to get to it tonight and see if there are any wiring issues. That would be a lot cheaper than a new sensor.

Thanks,
Norm

normc

Will it be easier to reach from the bottom? I can get it up on ramps this weekend. Last night it was still too hot to reach around the intake when I was looking. Tried finding it with an inspection mirror and flashlight, but no luck.