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Home >> Pontiac >> 2000 >> Firebird Base, 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Control System Self-Diagnostics - 5.7L) >> Diagnostic Tests >> DTC P0121: TP Sensor Circuit Insufficient Activity ("F" Body) >> Diagnostic Aids
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Diagnostic Aids

WARNING: This page is about a different variant/trim than selected.

An intermittent problem can be caused by misrouted harness, rubbed-through wire insulation or broken wire inside insulation. If other DTCs are set that share same ground and/or 5-volt reference circuit, check for faulty connections or wiring. PCM 5-volt reference circuits are internally connected within PCM. If it is determined DTC is intermittent, performing DTC P1121 diagnostics may isolate cause of fault.

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