6-7-11 what is code to turn off light? |
6-15-11 You will have to fix the EVAP system problem, for the MIL to turn off. |
8-3-11 What can happen if you don't fix it? |
That depends on what the stored computer code number is. Most EVAP system codes will have no ill effect of the vehicles operation, other than a constant check engine light and unable to pass emissions testing. |
9-14-11 I have the same problem in my car Mazda 3 2007, I want to change the sensor but I don't know the name of it and where is Locate it. Do you know ? |
10-11-11 I have P0446 and I changed the purged solenoid, vent solenoid, and gas cap and still same. |
That depends on what the stored computer code number is. Most EVAP system codes will have no ill effect of the vehicles operation, other than a constant check engine light and unable to pass emissions testing. |
10-13-11 If you re using a smoke machine and smoke is coming out to the breather is that normal? |
It depends if you've got everything closed off. You should only use the smoke machine after the vent valve and purge solenoids are commanded closed, and the gas cap is on tightly, or on an adapter tightly. If you've introduced smoke into the system without doing the steps listed above, you can have smoke coming out everywhere and it will not help you find your leak. |
11-13-11 When does the EVAP test occur -- At cold engine start, on highway driving? After resetting the DTC P1441, P1442 and P1446, it takes 3 to 4 days for the MIL light to turn ON and for the INC on status to disappear. DTC small leak, but found a open CCV (large vacuum leak), so the CCV got replaced. |
11-17-11 what is the evaporation control valve? That's what my code is for. Is that in the canister? 2006 GMC truck. |
Several parameters must be met to run this test. Highway driving, then sitting at a stop, engine warm, A/C off. |
If you mean the vent valve, it is in the rear under the spare tire, or on the rear of the gas tank. If you mean the purge valve solenoid, it is on the engine. |
1-20-12 2001 Pontiac Grand Am GT ABS/TRAC off warning light on but shows no codes. Is there a reset button for these warning lights to go off? |
No rest button. You need to have the computer scanned for codes, and the problem repaired, then the computer scanner can clear the codes. |
3-7-12 2002 Ford E-250. Vacuum forms in gas tank after driving a few miles. The bottom of the fuel tank gets sucked upwards. Turn off engine the gas tank pops back into place. No check engine codes. Replaced fuel pump, fuel vapor separators, and fuel tank pressure sensor. After two days time problem started again. |
3-7-12 Any idea of what the cost may be to have the EVAP Leak addressed for a 2000 GMC Jimmy? |
That depends on what the problem is. If it is just a vent valve, then expect to pay about $150 parts and labor. If it is a fuel tank seal, than maybe $300 pats and labor. Could just be a bad gas cap. If the leak is hard to find, then labor hours will be most of the cost. And this depends on what the shop charges. Dealerships range from $90- $130 per hour. Local shops are $60 - $100. |
You do not have a sensor problem, you have a vent valve problem. It is not venting when it should be, thus causing an extreme vacuum. |
3-27-12 I have a 99 Hyundai accent and recently found out the car I recently purchased is missing the evap canister. Of course check engine light is on. I have been having problems after driving for a while I blow a noticable amount of white smoke out the tailpipe. I am hoping buying and installing one will remove that issue. Also is not a blown head gasket. Any ideas. |
A missing canister should not cause the engine to blow smoke. You have other problems. |
4-2-12 Since you are very smart let me throw this at you. I have a 2009 Dodge Ram Hemi came with 26 Gallon tank no codes. I decided I wanted a 32 gallon tank so I bought one from salvage yard and removed 26 and moved over the fuel pump assembly which is same part number for both. Hooked all back up and everything looks fine but now I am getting a gas cap light and check engine where engine is lit solid. Check with the scanner I have it says 0440 evap emissions code. What do you think I did wrong to cause this error. I have rechecked the connections which is about 6 things if you include both ends of quick connects and hoses. I did mess up wire harness with one purple wire and one black wire that connects to rear of tank by the vent hose and had to make a wire harness with spade terminals. I doubt it is really gas cap since the gas cap worked before on 26. What do you think it could be? Maybe some junk that got in the lines? |
You may have blown a fuse, have a leak in an EVAP line or the pump unit seal, or maybe the pressure sensor and computer is not calibrated for a larger tank. |
4-27-12 This was very helpful I'm testing the voltage that was not correct on a 2007 Malibu so I replaced the PCM now it's ok. Thank you. |
P2421 Evaporative Emission System Vent Valve Stuck Open on a 2007 Volvo XC90. How do I fix? |
Replace the valve. |
I have a 1997 Camaro. P1441 came up in i changed the purge solenoid valve in it came on again i really dont no what to do i need help. |
I have a 1999 Grand AM 2.4l that stalls on hot days after driving for 15 minutes. It also stalls when running in park. I don't have a ses light on. I do have data sensor information. Output driver 2 open I'm not sure what that means. The mechanic also noted the oxygen sensor was not working as well as it could be. Thank you for your help. |
Mine said p1441 if i replace the purge solenoid will that fix it? |
I think that code is for the EGR valve. |
I have a 2002 Avalanche with the warning light showing. Code P0446 comes up which is associated with EVAP Vent System Performance. Any idea what would be causing this and how to fix? |
Probably the EVAP vent valve is bad. Very common problem. It is located above the spare tire. There is a redesigned kit at the Dealer to repair this problem. |
I hope you can help me i have a 2004 dodge stratus and i have been through so much with car my engine light is on and has been for ever i need a smog and the code i am getting says that my car is running lean i have changed everything possible what are my options please help. |
Check for vacuum leaks,check fuel pressure and check all the oxygen sensors for proper operation. |
2002 Honda Passport (same as Isuzu Rodeo). Codes P0446 and P1441. Using a Mity-pump, vacuum holds at the purge valve and in the line from the valve to the canister (line pulled off of canister and vacuum pulled from that end). Purge valve opens when a voltage is applied from a 9V battery. Vent valve at canister has open flow and valve closes when a voltage is applied from a 9V battery. I did not test vacuum between gas cap (seal looks fine) and canister (lines are too large for pump). Canister itself will hold pressure, but not vacuum. Can this be the problem? |
Yes, the canister not holding vacuum could mean that it is cracked. Vacuum pulls it one way, pressure the other. But, just because the vent and purge valve seem to be working when voltage applied, does not mean the computer is applying voltage properly. You need to use a scanner that can turn these items on and off. That will rule out the computer, valves and wiring. |
I have a 2001 Hyundai Accent 1.6L and I have had the EVAP CONTROL CANISTER replaced twice now. Is there anything I can pick up at like Auto Zone to help keep it clean? |
If the canister is getting full of dirt, there may be a filter for it. Check with your dealer for a redesigned unit. If it is filling up with gas, then you have a problem in the system. |
I have a 2001 Rodeo that keeps haveing the same error code saying bad gas cap. I replaced it with one but still got the error. I was told it has to have a factory cap. I am also getting horrible mileage 8.6. I was told the bad gas cap would cause this also. any ideas? |
If the gas cap is not fixing it, then you have an EVAP system leak. Possibly a bad purge valve or vent valve. The check gas cap light comes on because the computer senses a leak,but cannot determine what it is. A large leak acts like a gas cap loose or missing, and is a common thing to happen, so thats why the system has this warning. |