The Nissan Path

Hi, 2008 Nissan pathfinder s 115.000 miles first I got p0448 I replaced EVAP canister vent control valve and it is ok but now keep getting code p0443 every time my gas tank reach more or less half and replaced EVAP canister purge volume control solenoid valve but nothing keep getting the code. Canister is clean weight less than 4.4lb
any help please
thank you

Gn22 wrote:Hi, 2008 Nissan pathfinder s 115.000 miles first I got p0448 I replaced EVAP canister vent control valve and it is ok but now keep getting code p0443 every time my gas tank reach more or less half and replaced EVAP canister purge volume control solenoid valve but nothing keep getting the code. Canister is clean weight less than 4.4lb
any help please
thank you

see this thread...............
viewtopic.php?t=9879&sid=cb1ae2e06b61bc ... ba83dc394a

Had the dealer reprogram the ECM today now time will tell @ autonation Miami fl cost $162

Well bad luck P0443 came back i don't what to do next any help please

It sounds like you've replaced the solenoid and the valve, and weighed the canister. Did you do all of the other troubleshooting in the FSM (check the lines, etc.)?

That's a conundrum, may need to go deep and check the signal to the solenoid, etc.

yes I do replaced solenoid and valve no vacuum leak between canister to purge volume control solenoid valve all contact look good I event change the gas cap (Nissan part)

I’m looking at page EC-394 in the full service manual (FSM). Are you able to do the electrical checks in the troubleshooting procedures there? I.e., check for battery voltage in the line to the solenoid, etc.?

The app I posted about (Nissan DataScan II) should be able to see all of the CONSULT II data and signals the FSM mentions, I will try to check those later and see if it’s functional on my truck. That may help you identify a signal issue.

I am curious how AutoNation was able to reprogram your ECU. Are they also a Nissan dealership, or did they send it over to a Nissan dealer to have it done? Someone else may know but I suspect you would need a CONSULT terminal to do it.

Yes AutoNation is a Nissan dealer thank you

Checked Nissan DataScan this morning on the commute:



I can see EVAP system data in Nissan DataScan II. I think you should be able to do all of the troubleshooting in the service manual where it calls for using CONSULT II to verify operation.

Hi, I'm still getting the code P0443 every few weeks, replace EVAP Purge Control Valve, Vapor Vent Valve, pressure sensor in evaporator and the dealer did reprogram the ECU any help will be appreciate. Thank you

I was getting that one a year or two ago and I took the vapor canister off and cleaned it out with an air compressor. That fixed my issue. It was full of dirt.

wbruner wrote: ↑

Tue Oct 18, 2022 10:20 am

I was getting that one a year or two ago and I took the vapor canister off and cleaned it out with an air compressor. That fixed my issue. It was full of dirt.

+1. At this point I'd say the canister itself is the likely culprit. Dirty, cracked, or flooded.

Thank you, but I did clean the canister already, but it was not that dirty