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Home >> Pontiac >> 1993 >> LeMans VL >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Code Charts >> Code 51, Faulty Mem-Cal
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Code 51, Faulty Mem-Cal

Verify MEM-CAL is properly seated. If MEM-CAL is properly seated, replace MEM-CAL and recheck. If Code 51 reappears, replace ECM.