What this code means

Fault in the automatic load-leveling suspension system that maintains ride height under varying loads.

Symptoms

• Rear sagging under load
• Compressor running excessively
• Ride height warning
• Vehicle nose-up attitude when loaded

Common causes

• Air spring leak
• Compressor worn
• Height sensor fault
• Leveling valve stuck on mechanical systems

Diagnostic steps

1. Check ride height at all four corners
2. Inspect rear air springs for leaks
3. Test compressor output
4. Check height sensor operation
5. Inspect leveling valve on mechanically leveled vehicles

Repair notes

Repair leaks and replace worn components. Adjust leveling sensor linkage if needed.

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