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P0121 Diagnostic Trouble Code Discussion for August 2006

Throttle Position Sensor Does Not Agree With MAP

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Trouble Ticket Help Requests for DTC P0121
Help Request Posted
2002 Kia Spectra 1.8L MIL Lamp on VIN: KNAFB12172
P0121: Throttle Position Sensor Performance. ... for the problem this car ran fine but seemed to have a lack of throttle response but was only slight, code test p0121 and a history code of p0171 which did not return , we replaced the tps with a factory part then verified adjustment but found no way to ad...
August 04, 2006
1997 Pontiac Grand Am SE 2.4L Hesitation, Surge, MIL Lamp on VIN: 1G2NE52T6V
P0121: TP Sensor Performance. Vehicle came in with MIL on and DTCs in memory. Looking at the data w/engine running showed TP% at 23%, EGR% at 65% but engine running smoothly. Backprobing the EGR 5V reference showed almost battery voltage and same with the TPS. But, with KOEO, they were bot...
August 10, 2006
1997 Mercury Cougar XR-7 4.6L Poor Idle Quality VIN: 1MELM62W3V
P0121: tp sensor a circuit range performance. Vehicle came in with a high idle problem. pulled codes and found code for tp sensor. Replaced with an after market sensor. sensor voltage is over 1 volt 1.16 volts. Checked the throttle body and cleaned it . still idling too high. If we disconnect the tp senso...
August 31, 2006