DTC P0601-P0607, P060E, P062F, P1600, P1621, P1627, P1681, P1683, or P2610: Description
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This diagnostic applies to internal microprocessor integrity conditions within the engine control module (ECM). This diagnostic also addresses if the ECM is not programmed.
The ECM monitors its ability to read and write to the memory. It also monitors a timing function.