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!
Follow-up to last posted response, P1684 is a counter for starts. It indicates a battery disconnect within the last 50 starts. Dealers do not use this code because our computers can read the start count information. I called a buddy up north who told me they will not certify a vehicle with this code because too many people will disconnect the battery to clear codes and then bring it in for testing. I know of no way around this other than to drive it for a few weeks and accumulate the required 50 key cycles.
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No the 1684 is just a code letting u know the pcm is responding i have the problem
Yes, the P1684 on the Chrysler line does not indicate a fault. My sebring had codes p0442 and p0456 both indicating very small evep leaks. When I did the 3 time switch on of the ignition, the odometer readout gave me the p1684 first and then the other two. The scanner at the garage only indicated two "very small evap leaks" one for the second two codes. Clearly the first is a status indicator such as recent battery disconnect or another non problematic indicator. Wouldn't it be great if these manufacturers at least gave you the information to identify what their dummy lights are telling you so you didn't have to go on faith at the garage?
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jeep 2003 wrangler with code p0456 . jeep dealer cant fix
I have P0456 and P1684 I already found out on The Friset ONe But Not The Second HELP PLEASE
QUISIERA SABER COMO RESUELBO EL CODIGO P1684 EN UNA DODGE CARAVAN 2001
P0455 code what is it and how do I fix it.
I left the lights on in my car. The car started alright but later that day the check engine light came on. I'm getting error codes p1684 and p0456. Is this related to leaving the lights on?
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