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Home >> Buick >> 1995 >> LeSabre Custom >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> ECM/Pcm Code Charts >> DTC P1623: Prom Error

DTC P1623: Prom Error

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Ensure PROM is correctly inserted in PCM socket. If okay, replace PROM, clear memory and recheck. If Code P1623 reappears, replace PCM.

NOTE: To prevent possible electrostatic discharge damage to PCM or PROM, DO NOT  touch component leads. DO NOT  remove integrated circuit from carrier.
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