# U1000 — SCP (J1850) Invalid or Missing Data for Primary Id

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

Source: https://clearthecode.com/codes/U1000

**System:** Network · Open catalog (mit)

**Severity:** —

## Description

SCP (J1850) Invalid or Missing Data for Primary Id

## Diagnostic snapshot

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

## Diagnostic workflow

1. Confirm U1000 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.