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Home >> Pontiac >> 1990 >> LeMans Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Code Charts >> Code 51, Faulty Mem-Cal

Code 51, Faulty Mem-Cal

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

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