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Home >> Mazda >> 2003 >> 6 i, Automatic >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls [Self-Diagnostics 2.3L] >> Diagnostic Tests >> DTC P0601: Internal Control Module Memory Check Sum Error >> Possible Causes

July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Possible Causes

Possible causes are:

PCM internal ROM malfunction.
Reprogramming has not been completed properly.

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