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Home >> Buick >> 1995 >> Riviera 3.8 1 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 3.8L >> ECM/Pcm Code Charts >> Code P1623: Prom Error
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Code P1623: Prom Error

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.