Engine Serial Number Not Programmed or Incompatible
The engine controller cannot read a valid engine serial number from its non-volatile memory, or the stored value does not match the expected pattern. Calibration sets keyed to the serial number cannot be applied.
Affected components
- Control module
- Non volatile memory
Common causes
- High likelihood: Replacement ECU not programmed at install
- Medium likelihood: Non-volatile memory corruption
Diagnostic notes
- The malfunction indicator lamp may illuminate
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.