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P0121 Diagnostic Trouble Code Discussion for December 2013

Throttle Position Sensor Does Not Agree With MAP


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Trouble Ticket Help Requests for DTC P0121
Help Request Posted
2003 Hyundai Accent GL 1.6L MIL Lamp on, Hard Cold Start VIN: KMHCG45C03
P0121: Throttle Position Sensor/Switch 'A' Circuit Range/Performance. ... have another headache causing vehicle. I had this one come in over a year ago for a torn intake gasket. I repaired that and sent the customer on her way and everything was copacetic...until 6 months later. The customer came back with a MAP sensor code (unf...
December 02, 2013
2003 Hyundai Accent GL 1.6L MIL Lamp on, Hard Cold Start VIN: KMHCG45C03
P0121: Throttle Position Sensor/Switch 'A' Circuit Range/Performance. ... have another headache causing vehicle. I had this one come in over a year ago for a torn intake gasket. I repaired that and sent the customer on her way and everything was copacetic...until 6 months later. The customer came back with a MAP sensor code (unf...
December 05, 2013
2007 Chevrolet Tahoe LTZ 5.3L Fast idle VIN: 1GNFK13077
P0121: Tps 1 performance. Customer said vehicle suddenly lost power and set CEL. It also start and idles ok at first then will slowly increase RPM. I shut vehicle off and restarted and immediatly began fast idle (1500) and will increase to 3000 RPM. I've never ran into this before. Sca...
December 09, 2013