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P0120 Diagnostic Trouble Code Discussion for February 2008

Throttle Position Sensor Circuit Malfunction

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Trouble Ticket Help Requests for DTC P0120
Help Request Posted
1998 Toyota Tacoma DLX 3.4L No Start VIN: 4TAWN72N9W
P0120: TP Sensor or Switch 'A' Circuit Malfunction. customer called said his truck shut off like u turned the key off would not restart.turns over no fire.ok...rechecked t-belt and all ok.ohmed cam and crank sensors both land in middle of range.vehicle has no spark.this is a dis system.i have followed flow char...
February 07, 2008
1996 Lexus LS400 4.0L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: JT8BH22F8T
P0120: TP Sensor/Switch 'A' Circuit Malfunction. vehicle also has had injectors rebuilt,radiator replaced,speed cam and crank sensors ok,cam timing on the money reluctor good, installed properly, no scratches and sometimes engine runs perfect...??? fuel pressures ok so please help, keeps setting all 8 miss...
February 14, 2008
2005 Chevrolet Silverado 1500 4.8L Poor Idle Quality, MIL Lamp on VIN: 1GCEC14VX5
P0120: TP Sensor 1 Performance. Well guys I think we screwed this one up. My tech decided to clean the throttle plates, had a helper hold pedal down with key on to open throttle plates, while he was cleaning the plates closed by themselves and got his finger stuck between the plate and t/bod...
February 15, 2008