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P0121 Diagnostic Trouble Code Discussion for October 2008

Throttle Position Sensor Does Not Agree With MAP

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Trouble Ticket Help Requests for DTC P0121
Help Request Posted
2002 Hyundai Elantra GLS 2.0L Surge VIN: KMHDN45002
P0121: Throttle Position Sensor Circuit Range/Performance. ... now most of the time, engine surges mostly after warming up ,or partially warmed up, only from 2500 rpm and up , if you try to keep the throttle steady at 2500 rpm , then it oscillates from about 2,000 rpm to 2500 rpm, this car has got only a MAP sensor to...
October 02, 2008