Air Suspension Compressor Overheating
2018-2025 Fiat Cronos 1.3L I4 Flex Firefly
Description
The air suspension compressor has exceeded its maximum operating temperature.
Symptoms
- Suspension warning light
- Compressor shuts off
- Vehicle sags after extended operation
- Compressor runs excessively before shutting off
Common Causes
- Air leak causing compressor to run too long
- Compressor worn internally
- Blocked intake filter
- High ambient temperature combined with heavy load
Diagnostic Steps
- Check all air springs and lines for leaks using soapy water
- Inspect compressor intake filter
- Monitor compressor run time
- Check for leak codes at individual air springs
- Test compressor output volume
Repair Notes
Find and repair air leaks first. Replace compressor if worn. Clean or replace intake filter.
Related Codes
Other Chassis Codes
- C0021LF Wheel Speed Sensor Range/Performance
- C0022RF Wheel Speed Sensor Range/Performance
- C0023LR Wheel Speed Sensor Range/Performance
- C0024RR Wheel Speed Sensor Range/Performance
- C0025LF Wheel Speed Sensor Circuit Intermittent
- C0026RF Wheel Speed Sensor Circuit Intermittent
- C0027LR Wheel Speed Sensor Circuit Intermittent
- C0028RR Wheel Speed Sensor Circuit Intermittent
- C0035Left Front Wheel Speed Sensor Circuit
- C0036Left Front Wheel Speed Signal Erratic
C0311 on Other Vehicles
Fiat 124 Spider
2017-2020 1.4L I4 Turbo
Fiat 126p Maluch
1973-2000 0.65L I2 Air-Cooled
Fiat 126p Maluch
1987-2000 0.7L I2 Air-Cooled
Fiat 500
2012-2019 1.4L I4
Fiat 500 Abarth
2012-2019 1.4L I4 Turbo
Fiat 500 BR
2011-2020 1.4L I4 Flex Fire Evo
Fiat 500 PL
2007-2025 1.0L I3 Hybrid FireFly 70
Fiat 500 PL
2007-2025 1.2L I4 Fire 69
Common Questions
What does code C0311 mean on a 2018-2025 Fiat Cronos?
C0311 stands for "Air Suspension Compressor Overheating". The air suspension compressor has exceeded its maximum operating temperature.
What are the symptoms of C0311 on a Fiat Cronos?
Common symptoms of C0311 include: Suspension warning light, Compressor shuts off, Vehicle sags after extended operation, Compressor runs excessively before shutting off.
What causes C0311 on a 2018-2025 Fiat Cronos?
Common causes of C0311 include: Air leak causing compressor to run too long, Compressor worn internally, Blocked intake filter, High ambient temperature combined with heavy load.