My check engine light came on and i got the codes
i know from the forums that
P0304 - piston 4 misfire
P0303 - piston 3 misfire
but the third code i have not seen anywhere is
P01259
any help here please?
Thankds
zell1985

also if anybody could point me in the direction to find out what all the codes mean that would be helpful

 

I think its a Vtec code. Im gonna check into it for ya.

You didn't run the car low on oil did ya?

 

Yup P1259 is a vtec code. Its either due to low oil pressure or low oil or a bad vtec pressure switch

 

well it did run kinda low, not dangerously though, several months back but was immediatly taken care of, i had just had it serviced like a week before the light came on, and now it smells like something is burning....what can i do to check on these things, my mechanic said something bout a carbon buildup....but from what ive seen on the forums and this post that doesnt seem it at all so im not too sure i trust my mechanic now..

 

Carbon? That doesn't seem anywhere right. I would check the oil and make sure its full. If thats fine the only othere thing that can cause that code to come on is if the Vtec solenoid isn't operating when the PCM tells it to. So theres either a problem with the input to the solenoid or a bad solenoid. Either cases a scanner would be the only way i know of monitoring that.

 

well i guess im gunna have to go have a few choice words with my mechanic, ill check on the oil as soon as i go back to my car, thanks soo much for your help honda guy.
Zell

 

how much does it cost to change out a bad solenoid or a vtec pressure switch?

 

They're pretty easy to do yourself, at least on the J30A1.

 

yeah its real easy

 

Very easy on 4-cyl also.

The real trick is finding out whether the solenoid or switch is actually bad. The ECU can't tell the difference between a bad switch vs. a broken wire.