# C1230 — Speed Wheel Sensor Rear Center Input Circuit Failure

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

Source: https://clearthecode.com/codes/C1230

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

**Severity:** —

## Description

Speed Wheel Sensor Rear Center Input Circuit Failure

## Diagnostic snapshot

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

## Diagnostic workflow

1. Confirm C1230 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.