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P0121 Diagnostic Trouble Code Discussion for April 2005

Throttle Position Sensor Does Not Agree With MAP

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Trouble Ticket Help Requests for DTC P0121
Help Request Posted
1998 Lexus LX470 4.7L Poor Idle Quality, Hesitation, Stall VIN: JT6HT00W8X
P0121: TP Sensor or Switch 'A' Circuit Range/Performance. Customer is back again with code P0121 and same symptoms;namely, intermittent hesitation --- that is, some times she pushes the pedal and it goes nearly halfway before any response and then within 3 seconds or so, it catches up as if the throttle "righted ...
April 06, 2005
1996 Jaguar XJS 2+2 4.0L MIL Lamp on VIN: SAJNX2740T
P0121: Throttle position sensor/switch range perf problem. Customer angry at dealer. Sent customer to dealer for EGR code and transmission limp home codes P0727 & P1775, those codes ARE NOT present at this time. Dealer performed open recalls and did a "tuneup" according to dealer invoice. MIL Light on now....
April 18, 2005
1998 Honda Passport EX 3.2L MIL Lamp on VIN: 4S6CM58W7W
P0121: Throttle Position Sensor Range/Performance. I hope someone has seen this one before!Vehicle came in with MIL on and codes listed above stored. TPS sensor had been replaced by another shop, scoped sensor out,no glitches,followed pedal position.Checked connector and wiring ,no problems found.Substituted g...
April 19, 2005