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P0121 Diagnostic Trouble Code Discussion for March 2013

Throttle Position Sensor Does Not Agree With MAP


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Trouble Ticket Help Requests for DTC P0121
Help Request Posted
2007 Chevrolet Suburban 1500 LTZ 5.3L Poor Idle Quality, High Idle VIN: 1GNFK16397
P0121: TP Sensor 1 Performance. I'm stuck on this one. I replaced the Brake switch due to it showing Applied all the time. I also cleaned the Throttle body. After 2 or 3 starts I got a high Idle.2800rpm I tried to relearn the Idle with Snap-on Modis. It would be ok for 2 or 3 key cycles. I...
March 08, 2013
2009 Chevrolet Equinox LS 3.4L MIL Lamp on VIN: 2CNDL13F49
car has all the codes mentioned. plugs wires were changed. customer says then check engine light comes on, the traction control light also comes on and looses power. i am thinking bad throttle body. did the testing as per all data. just wanted to see what othe...
March 08, 2013
2009 Chevrolet Equinox LS 3.4L MIL Lamp on VIN: 2CNDL13F49
car has all the codes mentioned. plugs wires were changed. customer says then check engine light comes on, the traction control light also comes on and looses power. i am thinking bad throttle body. did the testing as per all data. just wanted to see what othe...
March 09, 2013
2006 Ford F-250 Super Duty XL 5.4L No Start VIN: 1FDNF20566
Also has codes= P0198, P0201, P0203, P0205, P0207, P0223. All kodes are KOEO hard fault codes. To extract plugs I disconnected PCM, vapor management valve all ignition coils and some injectors. Everything is hooked back up as it should and it looks like you ca...
March 19, 2013
2007 Chevrolet Suburban 1500 LTZ 5.3L Poor Idle Quality, High Idle VIN: 1GNFK16397
P0121: TP Sensor 1 Performance. I'm stuck on this one. I replaced the Brake switch due to it showing Applied all the time. I also cleaned the Throttle body. After 2 or 3 starts I got a high Idle.2800rpm I tried to relearn the Idle with Snap-on Modis. It would be ok for 2 or 3 key cycles. I...
March 08, 2013
2009 Chevrolet Equinox LS 3.4L MIL Lamp on VIN: 2CNDL13F49
car has all the codes mentioned. plugs wires were changed. customer says then check engine light comes on, the traction control light also comes on and looses power. i am thinking bad throttle body. did the testing as per all data. just wanted to see what othe...
March 08, 2013
2009 Chevrolet Equinox LS 3.4L MIL Lamp on VIN: 2CNDL13F49
car has all the codes mentioned. plugs wires were changed. customer says then check engine light comes on, the traction control light also comes on and looses power. i am thinking bad throttle body. did the testing as per all data. just wanted to see what othe...
March 09, 2013
2006 Ford F-250 Super Duty XL 5.4L No Start VIN: 1FDNF20566
Also has codes= P0198, P0201, P0203, P0205, P0207, P0223. All kodes are KOEO hard fault codes. To extract plugs I disconnected PCM, vapor management valve all ignition coils and some injectors. Everything is hooked back up as it should and it looks like you ca...
March 19, 2013