g t a threshold amount if method 400 judges that the fuel vapor storage canister stored fuel amount is greater than the threshold amount the answer is yes and method 400 proceeds to 410 otherwise the answer is no and method 400 proceeds to 412 at 410 method 400 opens the fuel vapor storage canister vent valve and the fuel vapor storage canister purge valve further the fuel vapor storage canister vent valve is not used to heat the fuel vapor storage canister however in some examples or during some conditions the voltage current may be applied to the fuel vapor storage canister vent valve to heat the fuel vapor storage canister even though the amount of fuel vapors stored in the fuel vapor storage canister is low for example if the stored amount of fuel vapor is non zero and the vehicle is in regenerative braking mode or traveling downhill with driver demand torque less than a threshold torque electrical energy from regenerative braking may be used to heat the fuel vapor canister to liberate any stored fuel vapors in this way the vehicle 39 s kinetic energy may be used to heat the fuel vapor storage canister method 400 proceeds to exit after the fuel vapor storage canister vent valve and.