Codes are they related to one faulty part
P1401Evap control system small leak
P1404 Leak detection module solenoid valve circuit malfunction
P0121 Throttle position sensor circuit / range perfromance problem
No this is not related to one faulty part, P0121 this is faulty TPS sensor,this either is from a deteriated TPS sensor ,or open or short in the TPS ,or just faulty TPS.The EVAP code P1041 can cause P1404 if this was a deteriated EVAP hose at its canister. or the fuel cap. P1401 small EVAP leak are usually caused by fuel cap being loose or unable to seal. For P1404,this is a difficullt code condition to test, to make it simple instead of spending more time searching it out just replace the leak detection module to get to it you will need to remove the fuel tank exhaust shield,
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