Code Definition

P0600 — Serial Communication Link Malfunction

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P0600

P0600 is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P0600 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The P0600 fault code is set when the Engine Control Module (ECM) detects a general malfunction in the vehicle's serial communication link. Modern vehicles utilise a complex network of control modules that communicate with each other over serial data lines, typically referred to as a Controller Area Network (CAN) bus or other serial communication systems. These networks transmit vital operational data between different vehicle systems, such as the engine, transmission, braking system, and more. A malfunction in the serial communication link means that the ECM is experiencing difficulties in com...

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