U043A

Invalid Data Received From Suspension Control Module B

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

Symptoms

Check Engine Light Is On
Suspension error messages may appear on the display
Deterioration of adaptive suspension performance
The car may go into emergency suspension mode
Unstable operation of the stabilization system

Causes

Suspension Module B Power Problems
Open or short circuit in the CAN bus circuit
Corroded or damaged connectors
Suspension module B itself is faulty
Problems with the module software

How to Fix

Check the integrity of the wiring harness to suspension module B
Inspect and clean the connector contacts
Check the power supply and ground of the module
Read additional error codes for accurate diagnosis
If necessary, replace or reflash suspension module B

Related codes

U043B U0438 U0121