U043A
UNetworkInvalid Data Received From Suspension Module B
What does this code mean?
Severity : MediumU043A means a module has received invalid data from suspension control module B. Communication is working, but the information sent, such as ride height or damping status, is implausible. Which module is called B varies by manufacturer, and controlled suspension functions may be limited.
Symptoms
- Suspension or warning light on.
- Adaptive suspension stuck in a default mode.
- Abnormal ride height on air suspension.
- Other network codes may be stored.
Possible causes
- Internal fault or active code in suspension module B.
- Faulty ride height or damping sensor.
- Low or unstable battery voltage.
- Damaged network wiring or connector.
- Outdated module software.
Diagnosis and repair
- Read suspension module codes and deal with them first.
- Check battery voltage and grounds.
- Inspect network wiring and module connectors.
- Check ride height sensors in live data.
- Check for manufacturer software updates, clear the code and road test.
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Code
U043A
Category
Network
Prefix
U
Standard
OBD-II / SAE J2012