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P0121 Diagnostic Trouble Code Discussion for January 2010

Throttle Position Sensor Does Not Agree With MAP

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Trouble Ticket Help Requests for DTC P0121
Help Request Posted
2007 Chevrolet Silverado 1500 Classic WT 5.3L MIL Lamp on VIN: 1GC5C1M0Z7
P0121: TP Sensor 1 Performance. ... have a 07 silverado that is setting a P0121 but the only way I can get it to act up is when I accelerate at 3/4 throtle up to 55mph from a stop (part of drive cycle) When this does happen it locks up my Modis system and I have to shut it down to get my dat...
January 01, 2010
2004 Hyundai Accent 1.6L MIL Lamp on VIN: KMHCG45C54
P0121: Throttle Position Sensor/Switch 'A' Circuit Range/Performance. ... the P0121 code which deals with correlation between the tps and the map sensors. I found there was a service bulletin in Mitchell for an updated Map sensor so I replaced it with the new sensor and the Tps. I still am getting the P0121 code and the data for...
January 29, 2010