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Home >> Oldsmobile >> 1995 >> Aurora >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 4.0L >> ECM/Pcm Code Charts >> Code 109, Pcm Mem-Cal Error >> Notes
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Code 109, Pcm Mem-Cal Error: Notes

Codes will set when PCM loses battery power, PCM loses long-term memory with ignition off, PCM loses long-term memory while running and PCM loses prime power.

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