Diagnostic Aids

If the DTC P0121 cannot be duplicated, the information included in the Freeze Frame data can be useful. Use the scan tool DTC information data to determine the status of the DTC.

Fig 1: P0121 - Throttle Position Sensor (TPS) Rationality Check Diagnostic Chart (1 Of 2)

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Fig 2: P0121 - Throttle Position Sensor (TPS) Rationality Check Diagnostic Chart (2 Of 2)

Courtesy of SUZUKI OF AMERICA CORP.