1998 Pathfinder SE OBDII Codes

aliebe · Jul 18th, 2005, 02:34 PM

I've got a 1998 pathfinder with the SES light on. Autozone gave me these codes:

P0325 - Knock Sensor Bank 1
P1444 - Aux Emissions Controls
P1446 - Aux Emissions Controls

The light was on for a while, then our exhaust manifold was cracked and replaced. Could this have something to do with it? Also, the kid at autozone tried to reset it, but as soon as I stepped on the gas the light came on. Is it possible the kid did not reset it properly.

lewisnc100 · Jul 18th, 2005, 03:56 PM

I wouldn't worry about the P0325, very common error code but on your pathfinder it won't trigger the CEL and doesn't seem to affect performance.

P1444 Purge Volume Control/V
P1446 Vent Control Valve

Getting two EVAP errors together makes me think you should check your charcoal canister for leakage first. Pretty common problem, charcoal leaks out and clogs EVAP components causing you to replace the canister and blow out the lines.

He probably goofed the reset of the light, should take a couple drive cycles to get an EVAP error to trigger the light, couple days to a week.

aliebe · Jul 18th, 2005, 04:36 PM

This sounds like a little more than I can handle. How much would a dealer charge to get this fixed?

lewisnc100 · Jul 18th, 2005, 05:28 PM

A ton since they'll hit you with a lot of labor for blowing out each EVAP line and then try to replace all sensors affected instead of trying to clean them out first. But there is a TSB that lists how to blow the lines out using an air compressor. You should be able to unhook the EVAP lines on the canister and check for charcoal to at least confirm that its leaking.

Not sure if it was this site but someone else just posted about this and was quoted $900, way too high. But as of right now the leak is still just a guess, you need to confirm it yourself or get someone to check it out. Could be as simple as loose or damaged EVAP lines.

Here's a link to a thread on the charcoal leak:

http://www.nissanoffroad.net/message...TOPIC_ID=16125

aliebe · Jul 22nd, 2005, 05:48 PM

I asked the Nissan part people about the replacing the Vent Control Valve. He said if I replace the valve, I need to replace the canister as well. Is this true? And why the hell is the canister so damn hard to get too?

lewisnc100 · Jul 23rd, 2005, 07:53 AM

The vent control valve bolts onto the canister but the inserts in the canister just spin when you try to take the valve off. I think some have gotten lucky and gotten it off, but mine just spun. Not a bad idea to replace both since they're under $100 for both parts. The canister is very easy to get to, it's right behind the driver's side rear wheel.