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Discussion Starter #1
After reading some on this forum i decided to join and see what the conclusion was to this issue.
2014 touring with 55k on the odo.
3 days ago we got the check cap warning, cap was tight.
Yesterday 4NOV2016 we got the check emisisons light on so i got the code pulled.

P056 small emissions leak.

Going to call and schedule an appt with Honda, but i am trying to figure out what everyones end game was with this code, as it seems to be a common issue among all models from this time frame.

thank you for any information given and allowing me to join
 

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Did you mean P0456? This code means there is a leak in the fuel vapor evaporative recovery system, or commonly referred to as the evap system. The fuel system is sealed and evaporative emissions are stored in a charcoal canister until the computer decides it's a good time to suck those vapors into the engine. The system does a self diagnostic at certain intervals to make sure that system is sealed properly. The gas cap, along with other parts, is part of that seal. There are also a couple of solenoid valves that open and close to seal the system, or allow fuel to be put in, or to pull the vapors into the engine and burn them.

This code can be extremely simple to fix (with a new gas cap) or it can be extremely hard for the DIY'er to find. The first thing I'd check is the seal on the gas cap. The cap needs to be tight of course, but also make sure the seal clean and undamaged and make sure the mating surface of the seal on the filler neck is also clean and free of any debris. Sometimes a problem can't be seen and a simple replacement of the fuel cap will solve the problem. You might be able to just drop into the parts dept. and buy a new gas cap and see if that fixes it. Stick with an OEM gas cap, though.

If that's not it then the leak will need to be found. It can be anything from the fuel cap to a leaking solenoid valve, broken evap hose, fitting, or other part. Usually a smoke machine is used to close off the system and fill it with smoke and look for where the smoke comes out to identify the leak.

Considering the cost of a new gas cap vs. the cost of a full diagnosis I think I'd just put a new one on an give it some more time to see if the light goes out. It can take a few drive cycles, though. You can have the code cleared with the same tool used to pull the code or you can disconnect the battery for a few minutes (make sure you have your radio codes first) to clear the code and then see if the light comes back after a few drives. It can take a week or two to complete the full drive cycle.
 

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Did you mean P0456? This code means there is a leak in the fuel vapor evaporative recovery system, or commonly referred to as the evap system. The fuel system is sealed and evaporative emissions are stored in a charcoal canister until the computer decides it's a good time to suck those vapors into the engine. The system does a self diagnostic at certain intervals to make sure that system is sealed properly. The gas cap, along with other parts, is part of that seal. There are also a couple of solenoid valves that open and close to seal the system, or allow fuel to be put in, or to pull the vapors into the engine and burn them.

This code can be extremely simple to fix (with a new gas cap) or it can be extremely hard for the DIY'er to find. The first thing I'd check is the seal on the gas cap. The cap needs to be tight of course, but also make sure the seal clean and undamaged and make sure the mating surface of the seal on the filler neck is also clean and free of any debris. Sometimes a problem can't be seen and a simple replacement of the fuel cap will solve the problem. You might be able to just drop into the parts dept. and buy a new gas cap and see if that fixes it. Stick with an OEM gas cap, though.

If that's not it then the leak will need to be found. It can be anything from the fuel cap to a leaking solenoid valve, broken evap hose, fitting, or other part. Usually a smoke machine is used to close off the system and fill it with smoke and look for where the smoke comes out to identify the leak.

Considering the cost of a new gas cap vs. the cost of a full diagnosis I think I'd just put a new one on an give it some more time to see if the light goes out. It can take a few drive cycles, though. You can have the code cleared with the same tool used to pull the code or you can disconnect the battery for a few minutes (make sure you have your radio codes first) to clear the code and then see if the light comes back after a few drives. It can take a week or two to complete the full drive cycle.
Mine just started up today after gassing the Van up but I got lose of power and engine shaking
 
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