Diagnostic Procedures

WARNING: This page is about a different car, the 2003 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: DTC P0121: Throttle Position Sensor Circuit Insufficient Activity (Steps 1-7)

Courtesy of GENERAL MOTORS CORP.

Fig 2: DTC P0121: Throttle Position Sensor Circuit Insufficient Activity (Steps 8-15)

Courtesy of GENERAL MOTORS CORP.

Fig 3: DTC P0121: Throttle Position Sensor Circuit Insufficient Activity (Steps 16-26)

Courtesy of GENERAL MOTORS CORP.