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Code

P0600

Network

Serial communication link malfunction

The ECM lost serial communication with another module.

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Most likely causes

CAN wiring fault
Failed module
Low voltage

Symptoms you may notice

Multiple warning lights

Checks to run

Test CAN wiring
Check battery voltage

Tools you may need

Multimeter

Always diagnose before replacing. Codes share symptoms; confirm the cause with measurements before buying parts.

Related codes in Network

Lost communication with engine control module

Lost communication with ABS control module

Lost communication with transmission control module

High-speed CAN communication bus

Control module communication bus off

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