U0124Network Communication

Lost Communication With Lateral Acceleration Sensor Module

U0124 means a module has lost communication with the lateral acceleration sensor module over the CAN bus. This sensor feeds stability control. It usually points to a wiring, power, ground, or connector fault.

🚗 Use caution. Stability control may be limited, but normal driving is usually possible.

MEDIUM

severity

🎯 Top Causes, Ranked by Likelihood

#1Wiring, connector, or CAN bus fault$50-$500

45%

Damaged or corroded wiring to the sensor module.

#2Power or ground fault$50-$400

30%

Blown fuse or poor ground at the module.

#3Failed lateral acceleration sensor module$200-$800

15%

The sensor module itself has failed.

🩺 Common Symptoms

Stability control warning
Traction control limited
ABS warning light
Warning lights
Other U-codes stored

💰 Repair Cost: DIY vs Shop

DIY Cost

$50-$400

Shop Cost

$150-$900

📋 Free OBD2 Code Cheat Sheet

The 50 most common codes with likely cause and DIY fix cost. Sent once, no spam.

🔧 How to Diagnose U0124

1Check fuses, power, and grounds for the sensor module

2Inspect CAN wiring and connectors at the module

3Scan all modules for lost-communication patterns

4Back-probe the CAN bus for correct signal

❓ Frequently Asked Questions

Can I drive with U0124?

Usually yes, but stability control may be limited. Diagnose it before driving in poor conditions.

What causes U0124?

Wiring, connector, or power/ground faults at the lateral acceleration sensor module, most often.

What does this sensor do?

It measures side-to-side force during cornering to help stability control. Without it, that system is limited.

🔗 Related Codes

U0100U0121U0123U0125