Invalid Data Received From Air Suspension Compressor Module
The U0479 code means the vehicle's onboard diagnostic system has detected: Invalid Data Received From Air Suspension Compressor Module. This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- hard
- Estimated cost
- $400 - $2,500 (parts and labor)
Network codes mean modules are not communicating. You need a scanner that reads all systems to find the problem.
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Common Symptoms
- Air suspension not leveling correctly
- Compressor running constantly
- Ride height uneven
- Suspension warning light on
Probable Causes (Ranked by Likelihood)
- Failed air compressor module Very High
- Air leak in suspension system High
- CAN bus data error at compressor Moderate
- Compressor thermal cutout activated Low
Step-by-Step Diagnostic Procedure
-
Check for air leaks
-
Test compressor operation
-
Scan compressor module
-
Measure air spring pressure at each corner
Frequently Asked Questions
Can I drive with U0479?
Short distances at low speed. Ride height may be incorrect.
What causes U0479?
Usually an air leak causing the compressor to overwork and send error data.
How much to fix?
Between $400 and $2,500.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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