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Home >> Cadillac >> 1995 >> DeVille Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 4.9L >> Pcm Code Charts >> Code P023, Ignition Control Circuit Problem >> Failure Conditions (Crank)
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Failure Conditions (Crank)

Ignition control pulses detected on circuit No. 423 in by-pass, or TEST CONDITION (RUN) failed previously this ignition cycle.

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