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Home >> Chevrolet >> 2000 >> Lumina >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls Self-Diagnostics - 3.1L >> Diagnostic Tests >> DTC P0121: TP Sensor Performance >> Diagnostic Aids
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Diagnostic Aids

Check for loose terminal connections or damaged harness. Observe the display on the scan tool while moving connectors and wiring harnesses related to TP sensor. A change in scan tool display may indicate location of fault. Inspect PCM and engine grounds for clean and secure connections.

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