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Bmw x5 evap system.
P2402 bmw description 5 hours after the ignition switch is turned off the electric vacuum pump creates negative pressure vacuum in the evap evaporative emission system.
P0444 bmw description the evaporative emission system canister purge volume control solenoid valve uses a on off duty to control the flow rate of fuel vapor from the evap canister.
The engine control module monitors for leaks and actuator malfunctions based on the evap pressure.
It means a very small leak has been detected.
P0442 bmw meaning the evaporative system monitoring permits the detection of leaks in the evaporative system with a diameter of 0 02 inches and up.
The evap canister purge volume control solenoid valve is moved by on off pulses from the engine control module.
This indicates a fuel vapor leak in the evap control system.