Ford Super Duty (1999-2016) :: Code P0446 And Check Fuel Cap Warning Came On
May 10, 2015
Got this code a while back (several hundred miles) but have had no runability problems. I know it's the evap canister but my mechanic tells me it could be a myriad of things and he might spend hours on it and still not be able to resolve it. I plan on driving this truck til it's worn out. I've put 125,000 miles on it in 10 years almost all highway. I should be putting much fewer miles on now, only using it when I NEED a truck which should be less and less, mostly for hauling toys.
I hate to drive this thing another 10+ years with the engine fault light on but my mechanic says that if something serious goes wrong it will start to flash. A couple days ago the "check fuel cap" warning came on, but goes off if I hit,the odometer button. I got a new gas cap at Reilly's but it seems like a real POS compared to OEM, very light, and the check fuel cap warning still comes on.
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Just had my 2005 F250 a few weeks and the 'check air filter' warning came on
Checked the filter, it looks fine, hasn't come off...it's the cylindrical one.
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This morning, the tow/haul light came on, tranny temp gauge wouldn't read (stayed below zero), "check gauges" warning came up on the panel, and "check engine" light came on. Truck ran fine/shifted fine, always has.
2007 F-250, V-10, 5-r 110 tranny.
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I am getting this check gas cap warning on the dash. I checked the cap, looks ok... Should I disconnect the battery for a minutes.. and see if it comes back?
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I have a 2006 Powerstroke F350. Recently, the "check air filter" light has been coming on. It comes on intermittently, and every time it comes on it makes a warning tone. Super annoying.
I reset the minder, and even tried unplugging it. No change. I think I must have a short in the sensor wiring, but I can't seem to find a wiring diagram that shows the air filter sensor.
Looking for a wiring diagram that shows how the minder is wired? Or What is the part number for the relevant wiring harness?
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I have a annoying check coolant additive warning light that wont go away, is their another way to turn off the light other than the button on the steering wheel? I have searched the forum but have had no luck, my coolant level is at it's proper level.
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Just got a new-to-me 2006 F350 Super Duty XL with the 5.4L V8 and 5-speed auto. I haven't had a full-size truck in a few years and forgot what I was missing!
When I bought the truck, all gauges were inoperative except for the fuel and oil pressure gauges. The previous owner told me they would work intermittently and at some point just stopped. The usual warning lights - ABS, CEL, and "the wrench" - were all lit, and from Googling and searching this forum, it looked like an easy fix - probably a pinched or frayed shifter wire, or possibly a cluster repair.
I took it home and did a self test on the gauges. The "sweep gauges" made everything swing fine, so I was thinking it might not be a problem in the cluster. I pulled the steering column apart, removed the Tow/Haul overdrive wire from the plastic retainer, re-ran it with some slack, taped the end where it comes out of the shifter (even though I saw no breaks/frays) cleaned the connections, gave it a dollop of dielectric grease in the connector, and put it all back together. VOILA - GAUGES and no warning lights! You can imagine the touchdown dance in the driveway.
Fast forward a few weeks and....back to no gauges and warning lights lit. Figuring the overdrive wire had finally given up, I ordered and installed a replacement shifter figuring it was an easy and cheap fix. No joy - same problem. Tried cleaning and reseating the connection. Nothing. I've searched FTE like mad and it seems like 95% of the problems are with the wire exiting the shifter fraying and/or blowing a fuse, but this is a new shifter. I've also checked fuses #2, #24, #33, #36, #41, and #45 (some referenced #19 but I don't have a fuse there). All were unbroken - just put them back in and reseated firmly. I did a code pull via OBD2 and have a "rear catalytic efficiency degraded" code...not sure if that's related, but figured I just had an exhaust issue.
I may take the dash cover off and try to clean and reset the connections on the gauge cluster, as well as do the same for the PCM. Is it possible that the tow/haul overdrive wire to the PCM (where the shifter connects to) is bad? How to test and/or replace if it comes up bad?
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So yesterday I decided to wash my truck and after taking care of that I took it for a short drive and the tranny started acting funny. Check engine light comes on and the code is P0500 . It calls for a VSS but I cant locate it. Also the fact that it did after washing the truck is making me think its a wiring issue... F250 SD 5.4 4x4 ....
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We just bought and '05 F350 Turbo Diesel, about two days after getting it the check engine light came on. We had the dealer check it since the mechanic wasn't in and it came up as "Fuel Level Sensor" . My husband can't remember the exact code. We have been told it's no big deal but we want it fixed and the engine light to go off. The dealer is giving us the runaround, or at least I think so.
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My 1999 6.8 has developed a miss at low rpm lugging, so I checked on my code reader and it says the Fuel Volume Regulator Control has open circuit.
Well, I can't find anything on these forums or in my shop manual on a fuel volume regulator. Is my reader just using the wrong name?
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Traveling cross country & got a check engine light telling me "injector control pressure low". Replaced ICP sensor and injector pressure control regulator. Removed old one and installed the new one.
While looking for one of the nuts that attach the glow plug relay in the valley I found a small round part looks like maybe a valve seat. About 1/2" round with maybe a 1/4" four flute spline in the center. Has an o-ring on one end.
Is this something that followed the old ICPR out and fell off the end when It cleared the mounting hole? It looks like the ICPR would bear against this little thing.
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My dads 05 f250 6.0 PSD. He says he'll take off in the morning and the fuel gauge will randomly drop to empty and trigger the low fuel light, but then also the Check Engine Light will come on. My brother did a code scan and no codes come up. Where we should be looking to remedy this one?
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My scanner reads P0001 Fuel Volume Regulator Control Circuit Open. My truck shuts down without warning, runs great otherwise. I've changed 2 grey CPS units and now have the Black IH one installed. What the Fuel Volume Reg.is? Is it the IPR on the HPOP?F250SD 7.3 225,000 miles.
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I had my fuel filters changed at the dealership today on my '15, and then I bought fuel and headed home (70 miles). About half way home I got a "Low Fuel Pressure" message and a little while after that "Reduced Engine Power" along with the check engine light.
I pulled over to see if they did something like leave the drain open, thinking it might be sucking air. Of course it was dark and I could not see anything. However I did hear a buzzing sound and could feel a vibration when I touched the fuel line going into the top of engine filter.
While it is possible I got bad fuel, I suspect they did something wrong installing the filters. Even after cycling the fuel pump multiple times they had a hard time getting it started afterwards; I think they finally disconnected the top fuel line to bleed the air out.
I continued home and made it, but not sure what to do now; its 70 miles back to the dealer.
What is the most likely problem? Improper fuel filter installation or bad fuel?
Should I pull the filters in the morning see if there is something obvious like an out-of-place gasket? If so, top or bottom filter?
Is this a tow truck affair or should I drive 70 miles back to the dealer?
What the heck is the buzzing sound?
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A couple of weeks ago, the gas cap warning message on my 5.4L showed up on my dash. Didn't think too much about it, figured to get one next time I was at auto parts store.
Then, a few days ago, the CEL came on. But truck seemed to run fine. As I was about to leave on a long trip this morning, I had the codes scanned just to be safe, and as expected, it came back with only the gas cap code. I was running late, so I just drove (yeah, yeah, I know). The CEL is still on.
I've also felt it hesitate a few times when the rpms got down to about 1200 (going up a hill pulling a trailer). Didn't think much, my diesel always did the same thing.
Well, tonight, a few miles down the road after I filled up a nearly empty tank, the CEL flashed for a few seconds, then quit, but still on.
Can all of this be about the gas cap? I saw some talk about fuel pumps, misfiring and catalytic converters getting ruined on here, but it seems like it could all be fuel related, and the gas cap might be the culprit.
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So I am having yet another problem with my 2015 f-350 .... We did not receive any warnings that the DEF was empty until MPH was limited.
2 1/2 gallons was added to the tank less than 1,500 miles ago.
Heat problem many have been solved but will not know until winter, see this link [URL] ....
Because of the unreliability and unpredictability of the truck we are now filing for lemon law under NY state law.
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2000 Amigo 3.2L V6.
My check engine light came on, and I went to autozone to get the code read. The code was P0446, "a malfunction in the electrical circuit for the vent control in the evap emission control system." I was wondering if this could be a simple fix...would cleaning the EGR valve do anything to get rid of this? Maybe this could work, but before the light came on, the amigo was taking awhile to start up (usually 4 cranks, with me pressing on the gas). And oh yeah, the check engine light didn't pop up until after I let the car sit for 12 days, while I was on vacation.
I also have a side problem...when I turned on my car for the first time after my vacation, besides the check engine light popping up for the first time, my ABS light also came on. I've tried the whole turning off, turning on the car and driving real slow process, but the light remains on. It just seems really interesting that both lights came on right after my car was sitting for awhile.
I'm thinking about taking the amigo to the dealership to get it checked out.
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2001 Camry 4 cylinder. Check engine light came on yesterday. Advance Auto pulled out the code P0446 for the evap. emissions system vent circuit.
The car has no symptoms other than this and is current on all maintenance, but obviously it is a 10-year old car and so it goes.
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Just got back from a 2500 mile trip and the 800 mile DEF warning came on. Went to a DEF pump but it just filled the neck. Went to another DEF pump, same . Went home and used a Ford DEF jug with the Ford spout. It still will not go in. If I squeeze the jug, I can hear a little bit dropping into the tank.
The vent and fill pipes are not kinked. The vent hole in the fill tube looks clear. I washed off the top of the tank since there is a vent there.
Still no fill. I do not have a bore scope to look in the fill tube. I ran a 1/2 inch flexible hose down the fill tube until it stopped. Still no fill.
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On my way into work this morning, all the warning lights came on, along with the check engine wrench. My display was showing that I was overheating and the gauges stopped working. While this was happening, there was no noticeable change in the way the truck was performing.
After about a minute or two, the warning lights shut off and the gauges worked again as normal. The gauges did not show that the truck was overheating at that time. Another few minutes went by and the same thing happened again. Then the gauges came on and the warning lights shut off for the second time, it did not happen again for my 10 minute ride to work. On my way home this evening, this did not happen again.
The truck seems to be charging and the battery seems to holding a large as well. The truck is a 2015 F350 XLT 6.2 with about 9700 miles on it.
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Went to leave for work this morning & got a "low tire pressure" warning...checked at work (isn't it always the last tire you check?), going to have to keep an eye on the left rear..was down to 45
with all the money we spend on these rigs, why can't put in a tpms system that would allow us to see WHICH tire is low?
Any aftermarket system that allows monitoring of INDIVIDUAL pressure? (ultimately, it'd be nice to get a 4 axle system that would "communicate" with the trucks (very basic) system, but also allow monitoring of my RV axles as well)
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