14 Q60 p0456
Download sections EC (Engine Control) and PG (Power & Ground) from here (though I would strongly suggest you take time and download the whole manual.
Section EC will explain how to diagnose your P0456 code. In a nutshell, the ECU is sensing a small leak in the EVAP (emissions) system. In these cases, the gas cap is often the culprit but it can also be traced to a bad vent valve or worn/ damaged hoses.
When you fill your gas tank, do you stop when the pump stops or do you prefer to "top it off?"
If it were me, I would replace the gas cap as that is the easiest and cheapest option to start.
Section EC will explain how to diagnose your P0456 code. In a nutshell, the ECU is sensing a small leak in the EVAP (emissions) system. In these cases, the gas cap is often the culprit but it can also be traced to a bad vent valve or worn/ damaged hoses.
When you fill your gas tank, do you stop when the pump stops or do you prefer to "top it off?"
If it were me, I would replace the gas cap as that is the easiest and cheapest option to start.
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