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Home >> Chevrolet >> 2001 >> Impala LS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics - 3.8L >> Diagnostic Tests >> DTC P0507: IAC System Rpm High >> Code Enable Criteria
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Code Enable Criteria

DTC sets when actual engine speed is 175 RPM more than desired engine speed. Diagnostic must fail 4 consecutive times per key cycle.