C0550 DescriptionThis is an internal fault detection of the Transfer Case Shift Control Module (TCCM). This fault is handled inside the TCCM. No external circuits are involved.
At each power-up, the TCCM runs a self-test on the following:
- EEPROM Checksum
- ROM Checksum
- RAM Checksum
- RAM Malfunction
C0550 Information for specific makes
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