C1929
Air Suspension Front Compressor Relay Circuit Failure
C1929 is an OBD-II diagnostic trouble code meaning: Air Suspension Front Compressor Relay Circuit Failure. Common causes: faulty compressor relay, open or short circuit in wiring harness. Estimated repair cost: $56–222.
Symptoms
- Suspension fault indicator is on
- The car does not change the height of the body
- Unusual noises from the suspension compressor
- Suspension remains in one position
Causes
- Faulty compressor relay
- Open or short circuit in wiring harness
- Problems with power or circuit ground
- Faulty suspension compressor
- Problems with the suspension control module (ASCM)
How to Fix
- Check compressor circuit fuse
- Check compressor relay (replace if necessary)
- Check the integrity of the wiring harness to the compressor
- Check the performance of the compressor
- Check battery terminals and body ground
- Scan the suspension control unit for additional errors
Related codes
FAQ
What does the C1929 code mean?
C1929 is an OBD-II diagnostic trouble code that indicates: Air Suspension Front Compressor Relay Circuit Failure
What causes a C1929 error code?
The most common causes of C1929 include: Faulty compressor relay; Open or short circuit in wiring harness; Problems with power or circuit ground; Faulty suspension compressor.
How do I fix a C1929 diagnostic trouble code?
To fix C1929: Check compressor circuit fuse. Check compressor relay (replace if necessary). Check the integrity of the wiring harness to the compressor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C1929?
Limited driving only, diagnose soon
How much does it cost to fix C1929?
The estimated repair cost for C1929 is $56–222. Actual cost depends on your vehicle, location, and labor rates.
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