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P0121 Diagnostic Trouble Code Discussion for February 2010

Throttle Position Sensor Does Not Agree With MAP

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Trouble Ticket Help Requests for DTC P0121
Help Request Posted
2007 GMC Yukon XL 1500 SLT 5.3L MIL Lamp on VIN: 1GKFK16367
P0121: TP Sensor 1 Performance. customer said the trk loss power and the stubilatrack light came on alone with the ck ceengine light. He had the codes ck and clear at napa service center. they did not write them down. The ck engine came back on but no driveabilty problems. The codes that i l...
February 06, 2010
2007 Chevrolet Impala LS 3.9L Poor Idle Quality, MIL Lamp on, idle will raise VIN: 2G1WU58R17
P0121: TP Sensor 1 Signal Circuit Malfunction. Another tech has a impala came in with po121 code and customer complaint of surge. Technician replaced air box(airfilter box with maf sensor in it)The vehicle appeared ok, did not surge but after driving 20 minutes idle started to raise and was running at arou...
February 08, 2010
2003 Hyundai Tiburon 2.0L Poor Idle Quality, Hesitation VIN: KMHHN65F03
P0121: Throttle Position Sensor/Switch 'A' Circuit Range/Performance. Customer came in last week complaining of a stuck gas pedal. he told us that when that appen, he was able to just pull the pedal back with is foot at first but he wasn't able to do it anymore. We first check the throtle cable as long as the cruise cable and fo...
February 23, 2010