P0601 - Internal Control Module Memory Checksum Error
P0601 - INTERNAL CONTROL MODULE MEMORY CHECKSUM ERROR
| Description: Indicates the powertrain control module (PCM) internal central processing unit (CPU) has encountered an error. The PCM monitors itself and carries out internal checks of its own CPU. If any of these checks returns an incorrect value, the DTC sets. | |||
Possible Causes:
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| Diagnostic Aids: Reprogram or update the calibration. Reprogram the vehicle identification VID block (use as built data). Check for other DTCs or drive symptoms for further action. Make sure to check for aftermarket performance products before installing a new PCM. If it is necessary to install a new PCM, refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) . | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST Y . | ||