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P0121 Diagnostic Trouble Code Discussion for May 2011

Throttle Position Sensor Does Not Agree With MAP

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Trouble Ticket Help Requests for DTC P0121
Help Request Posted
2004 Suzuki Verona EX 2.5L MIL Lamp on VIN: KL5VN52L44
P0121: Throttle Position Sensor 1 Performance. ... check the readings on the o2 sensors, found the rear bk2 oxygen sensor not moving much. Vaccum test all the evap related solenoids and check all hoses, seems fine. reset ECM, the car came back with front o2s slow responds and evap leak code, so we replace ...
May 19, 2011
2007 Chevrolet Silverado 1500 Classic WT 4.3L MIL Lamp on VIN: 1GCEC14X77
P0121: TP Sensor 1 Performance. Cold idle is 1,500 rpm's for about a minute or so and controls respond when shifting to "D" or "R" to maintain idle but after a minute or two of warm-up the rpm's elevate to a fixed 3,000 rpm's until shut down. When engine is shut down a large ...
May 23, 2011