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Home >> Buick >> 2003 >> Regal LS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics - 3.8L >> Diagnostic Tests >> DTC P0121: TP Sensor Performance >> Diagnostic Procedures

Diagnostic Procedures

NOTE: If any other DTCs are set, diagnose those DTCs first.
Fig 1: DTC P0121: TP Sensor Performance (Steps 1-7)
G00250382Courtesy of GENERAL MOTORS CORP.
Fig 2: DTC P0121: TP Sensor Performance (Steps 8-15)
G00250337Courtesy of GENERAL MOTORS CORP.
Fig 3: DTC P0121: TP Sensor Performance (Steps 16-25)
G00250338Courtesy of GENERAL MOTORS CORP.
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