I went to Auto one today and got this reading P0442. Claimed it could be gas cap,EVAP (evaporative emissios system)small leak.
Also the evaporative emission system is monitored for abilityto hold vacuum.
Probable cause
Defective or loose gas cap.
EVAP canister or hose cracked not connected.
Purge or vent solenoid defective.
Vacuum leak at engine
Could any one tell me what might be the cause, thanks Steve Zimmett.