check engine light..help. have code.

[sam hamm]

i purchased a 1995 automatic car a few months back because it was a good deal. ive never even got the car registered so i havent even drove the car at all. i purchased another car about a week ago that going to donate its 5 speed, 5 lug swap, and ka-t onto my car. well me a friend took the car out and i decided to cut a little donut just joking around and then just took it right back home. well i started the car up today to take it to where im going to do the swap and noticed i was throwing a check engine light so i went and got the car scanned and im throwing 2 codes.

the first is a P0400 with is EGR flow malfunctioin. im pretty sure this isnt to bad of a fix. but the other code is what im worried about.

the other is P0325 which is knock sensor 1 circuit malfunction bank 1 or 1 sensor. my question is does this code more than likely mean my motor may have a knock or that the knock sensor itsself is bad? i have another one i can slap on to check but before i do that work i just wanted to get you guys opinion.

when doing the donut i dont even think i hit that hi of revs and the car has enough oil if that helps out any.

thanks in advanced for the help if anyone answers.

[pahaf]

do u feel a knock when driving? i know maximas have this code a lot cause the knock sensor cracks, and it throws the code

[sam hamm]

hmm i need to check that then. i dont hear anything that sounds like a knock at all. i hope its not the motor because i dont feel like doing the extra work to change some bearings and stuff.

[pahaf]

also, check the connections. hope this helps.

[wiggafly808]

do u feel a knock when driving? i know maximas have this code a lot cause the knock sensor cracks, and it throws the code

Yep, i got this code on my maxima, changed the sensor and it was fine.

And i thought the knock sensor sensed the knock and advanced your timing to compensate.. i dont think it means you have rod knock. (dont quote me on that though)

[pahaf]

it retards ur timing, and ur car runs like shit. my freind in a KA S14 kept up with me. when i changed it, it felt like i got 20-30 hp back. (this was on my 1995 Maxima SE 5 Speed.)

my 240 is retarding the timing right now casue im misfiring.