DTC 0x08 (often displayed as P0x08 or U0x08 in generic readers, but specifically 0x08 in Fiat’s proprietary diagnostic system) indicates a loss of communication between the Engine Control Module (ECM/PCM) and the Controller Area Network (CAN bus). It is a network integrity fault, not a sensor or actuator failure.
0x08 is a hexadecimal number (base-16). The 0x prefix is a standard notation in programming, indicating that the following digits are in hex. fiat 0x08
With the battery connected but the car off: DTC 0x08 (often displayed as P0x08 or U0x08