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Home >> GMC >> 1999 >> Forward Control 6.5 F, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Tests W/Codes - DTC P1537-U1193 >> DTC P1621 >> DTC P1621: Pcm Memory Error (1.9L SATURN) >> Circuit Description

Circuit Description

DTC will set when PCM determines that a memory error exists.

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