Home/Oldsmobile/Cutlass/Oldsmobile Cutlass VI (1997-1999)/Repair manual/Testing & Diagnostics/DTC P1121 - TP SENSOR CIRCUIT INTERMITTENT HIGH VOLTAGE

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DTC P1121 - TP SENSOR CIRCUIT INTERMITTENT HIGH VOLTAGE Oldsmobile Cutlass VI

Testing & Diagnostics

Note. For circuit reference, see the appropriate WIRING DIAGRAMS article. For connector and terminal identification, see CONNECTOR IDENTIFICATION .

Circuit Description

Throttle Position (TP) sensor measures amount of throttle opening. PCM uses TP sensor information for fuel delivery calculations. TP sensor readings during acceleration are much higher than those during deceleration or idle. DTC P1121 sets if PCM senses TP sensor voltage intermittently greater than 4.7 volts.

Conditions required to set DTC are

Ignition is on.
TP signal voltage is intermittently greater than 4.7 volts.