C0312moderate severityChassis
Air Suspension Air Spring Leak Detected
on 2011 Lincoln MKX 3.7L V6 · AWD
What this code means
The air suspension system has detected an air leak at one or more air spring assemblies.
Symptoms
- Vehicle leaning to one side
- Vehicle sitting low after parking overnight
- Compressor runs frequently
- Suspension warning light
Common causes
- Cracked air spring rubber bladder
- Leaking air spring top mount seal
- Air line fitting loose
- Air line cracked from age or heat
- Solenoid valve leaking
Diagnostic steps
- Spray soapy water on air springs and fittings
- Check for bubbles indicating leak location
- Monitor ride height sensors for one corner dropping
- Listen for hissing near air springs
- Inspect air lines for cracking or heat damage
Repair notes
Replace leaking air spring assembly. Repair or replace air lines as needed.
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Other Chassis codes on this vehicle
C0021
LF Wheel Speed Sensor Range/Performance
C0021
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C0022
RF Wheel Speed Sensor Range/Performance
C0022
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C0023
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C0023
LR Wheel Speed Sensor Range/Performance
C0024
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C0024
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C0025
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C0025
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