U0418

Invalid Data Received From Brake System Control Module A

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–278 (est.)

Symptoms

Check Engine Light Is On
ABS/ESP systems do not work
Reduced braking performance
Loss of data on the dashboard
The car goes into emergency mode

Causes

Problems with the CAN bus
ABS/ESP module malfunction
Wiring harness damage
Contact corrosion
Software error in the module

How to Fix

Check connections and wiring integrity
Read error codes from the ABS/ESP module
Check the voltage and resistance in the CAN bus
Update module software
Replace the faulty module if necessary

Related codes

U0415 U0416 U0417