# P0600 — Serial Communication Link

> ClearTheCode diagnostic code reference (not OEM service data).

Source: https://clearthecode.com/codes/P0600

**System:** Powertrain · Computer Output / Network

**Severity:** moderate

## Description

PCM-to-module communication problem. Inspect CAN bus wiring and module power/ground.

## Diagnostic snapshot

- **Difficulty:** 6/10 — Intermediate diagnostics
- **Est. repair cost:** $120 – $450

## Diagnostic workflow

1. Confirm P0600 with a live scan — note pending vs stored and freeze frame data.
2. Inspect wiring/connectors and related sensors before replacing modules.
3. Clear codes and road-test; re-scan after two drive cycles if the monitor must set.