Скачать или смотреть What Does DTC P0456 Mean? Evaporative Emission System Leak Detected (Very Small Leak)

This video will help you determine the meaning of Diagnostic Trouble Code (or DTC)
P0456.
P0456: Evaporative Emission System Leak Detected (Very Small Leak)

Possible P0456 causes:
EVAP hose leaks
Faulty purge valve
Damaged vent valve
Loose/leaking gas cap

0:00 Welcome Back
0:30 Evaporative System Diagnostic
1:00 P0456 Possible Causes
1:20 P0456 Possible Symptoms
1:30 Driving Recommendation
1:45 Additional Recommendations

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EVAP System Diagnostic Code Small Leak
How To Read Check Engine Diagnostic P0456
Evaporative System Fault Code P0456 Diagnosis

Technically speaking, OBD-II fault code P0456 means “Evaporative emission system leak detected”, but refers to only a very small leak in the emission system.
A large leak would be indicated by code P0455.
Practically speaking, this means that somewhere between your gas cap and your engine, a small amount of fuel vapor is escaping.
The evaporative emissions (or EVAP) system pressurizes the fuel tank and lines regularly to test for leaks, and if pressure loss is detected, you may experience this code.
The common causes for this code are a leaky EVAP system hose, an issue with the purge valve or vent valve, or a gas cap that’s loose or not sealing as it should.
In fact, it’s always a good idea to start by making sure your gas cap is secure and sealing properly. Many gas caps are designed to click several times when they are fully tightened, so remove your fuel cap, inspect it for signs of damage, and tighten it back fully before continuing any further diagnosis.
The only symptom you may experience with this code is a Check Engine light, as a small EVAP leak is not typically enough to cause noticeable performance issues.
It is okay to drive, but it’s important to have it diagnosed professionally or make any necessary repairs as soon as possible.
Since the cause of this code can vary from one vehicle to the next, we recommend starting with an O’Reilly VeriScan report if you haven’t already.
If you’re not sure where to start for this repair, we’d be happy to recommend a professional shop in your area to help you determine which of the possible issues have caused the code or codes, and what your course of action should be.
If the necessary repair is one you think you can do yourself, we can get you the parts and supplies you need to get it done right.