C1820
Air Suspension RF Air Compress Request Exceeded Max Timing
C1820 is an OBD-II diagnostic trouble code meaning: Air Suspension RF Air Compress Request Exceeded Max Timing. Common causes: air leak in pneumatic lines or receivers, air suspension compressor malfunction. Estimated repair cost: $111–333.
Symptoms
- Uneven body height
- Compressor starts frequently
- Reduced air suspension performance
- Hot compressor after operation
Causes
- Air leak in pneumatic lines or receivers
- Air suspension compressor malfunction
- Clogged compressor air filter
- Malfunction of body level sensors
- Problems with air suspension valves
How to Fix
- Check the system for air leaks
- Diagnose the condition of the compressor
- Check compressor air filter
- Check body level sensors
- Check the operation of the air suspension valves
Related codes
FAQ
What does the C1820 code mean?
C1820 is an OBD-II diagnostic trouble code that indicates: Air Suspension RF Air Compress Request Exceeded Max Timing
What causes a C1820 error code?
The most common causes of C1820 include: Air leak in pneumatic lines or receivers; Air suspension compressor malfunction; Clogged compressor air filter; Malfunction of body level sensors.
How do I fix a C1820 diagnostic trouble code?
To fix C1820: Check the system for air leaks. Diagnose the condition of the compressor. Check compressor air filter. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C1820?
Limited driving only, diagnose soon
How much does it cost to fix C1820?
The estimated repair cost for C1820 is $111–333. Actual cost depends on your vehicle, location, and labor rates.
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