Vehicle will turn over but will not startHad hand handle computer hooked up to my 2004 chrysler pacifica. These codes were revealed p0442, p0456, p0685 & p0688. Checked the fuse box under hood and found fuse#37 melted down in the recess.
Code - po442=evap leak medium detected
code-po456=evap leak small detected
look at fuel cap or leaks in rubber hoses
SOURCE: CODES,P0442,P0455,P0456,P1684
P0442, P0455 AND P0456 are all evaporative leak monitor test failures (small, medium and large leaks). These codes appear anytime the integrity of the air space above the fuel or the lines to/from the vapor canister or purge valve. If there is no damage to the canister, check the lines that run under the van from the fuel tank and canister to the purge valve (under the hood). Also, check to make sure that the hoses are not split or disconnected where they connect to the purge valve. The P1684 is abit more confusing. This is not a valid DTC for your vehicle. It's possible the scanner the shop you went to is an OTC scanner that is reporting a false code. It's also possible they wrote it down incorrectly. The closest thing that makes any sense is a P1486 which would indicate a pinched hose in the same monitor system as the other 3 codes. Best of luck!
SOURCE: code P0456,P0455, &P0442
hello po442 ,po455,po456 is leak detected possible, check the gas cap , basicaly you have a leak that is larger than 0.020' and smaller than 0.040' in the gas evaporative system use your nose to find this one thanks
SOURCE: can I reset a P0456 code on Chrysler Pacifica 2004
That code usually means your gas cap is not tight enough or if it is the seal on the cap is bad and not sealing tight enough. You can fix the problem by replacing the cap with a new OEM one from the Dealer. Aftermarket caps are not recommended. Sometimes once you have a new cap installed the code will go away by itself. You will need a OBD II scanner to erase the code, you can go to AutoZone and they can read and erase the code for you.
SOURCE: 2003 dodge caravan won't start
My 2003 dodge caravan would not start after driving about 1/2 hour. I stopped for coffee and when got back in to start it started I switched gears and it stalled. I tried to start again switched gears then it started but only for 2 sec. No clicking, no cranking sound just would not start but battery functions were great. Spent 2 days with a mechanic who could not resolve so sent to Dodge. After a day of putting wires back and checking out the problem they said it was the computer. Said that it was bad and could be replaced at no charge due to malfunction. Yes, it worked fine afterwards no more problems. They also said that some of the computers are found to be defective like this one so I hope this helps you in the right choice to have the dealer check it out if you are unable to get a computer reading and there is no obvious short in the system. Free sounded very good but as you know there is no such thing as really free as they got me for other things $350 worth. ouch!
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