Accent with P1124

[SCREAMINGDB]

Hi ,
I have a 2001 Accent GL automatic with a code p1124 that had gone away for about a month and has decided to return yesterday.
TPS seems to be working fine, I replaced fuel filter, cleaned throttle, I checked for leaks but could not find one.
What can it be?

 

[avisitor]

TPS is the throttle position sensor and really doesn't relate to the Diagnostic Trouble Code.
P1124 is for long term fuel trim error, system lean (look up "P1124 Hyundai")
Which means more than likely a vacuum leak, low fuel pressure, clogged fuel filter, etc.

Good luck