Leaderboard

Haven't dealt with this on my Pathfinder fortunately, but did on my 98 Frontier. It sucked. Charcoal pellets all the way from the rear of the truck to the solenoid valve in the engine bay. My issue produced a P1444 (purge solenoid valve) but the codes in that series tend to be related, and in my case the code was brought about by a ruptured charcoal canister. Blowing and vacuuming the lines is not enough. The charcoal crumbs get jammed together in the lines. You need to use a stiff, but flexible, wire to push through every hard line, and it may be necessary to remove any hoses. Flush the lines with pressured water if possible, but house pressure is fine. Then continue to blow and vacuum the lines using whatever attachments you can to maximize pressure. Repeat this couple times. Any little charcoal crumb will eventually clog the line or find its way into the solenoid. My long term solution there was to put a transparent fuel filter on the line right off the canister. BTW, the solenoids can be fixed if they clog, since they're not cheap to replace. You just bend the little metal tabs in a little and split the coil portion from the plunger. Some pins/needles can dislodge pieces that are blocking the valve. The solenoids are also commonly used on other Nissans (the one on my 04 Pathfinder is identical to the one on my 98 Frontier). Not sure about the "405". What are you using to pull codes? Is the code exactly "P0405" on screen? Reason for asking is because in 98, you could pull "codes" directly from the ECU without a scanner, but the code it flashed was not the DTC "P" code. The FSM was needed to convert the ECU code to the DTC code. I'm not seeing "0405" as an ECU nor DTC code in the 98 R50 FSM, so that's why I'm curious about what's being used to pull the code. Maybe it's P0450 (control system pressure sensor) and there's a leak if a hose was disconnected or misrouted?