Pcm Code P052 - Pcm Memory Reset: Notes

This code test monitors PCM long term memory for a loss or unintended change of data. If battery power or ground is disconnected, PCM Code P052 will set, and should be cleared when battery power is restored. PCM keeps a running check on memory. If memory changes, Code P052 resets. If P052 is accompanied by driveability symptoms and/or other stored codes. Check for intermittent loss of power or ground to PCM, and inspect PCM connectors.