C0321
Motor A Or B Circuit Failure
C0321 is an OBD-II diagnostic trouble code meaning: Motor A Or B Circuit Failure. Common causes: open or short circuit in motor a/b circuit, squib malfunction. Estimated repair cost: $56–167.
Symptoms
- Airbag light is on
- Belt pretensioners do not work
- SRS disabled
Causes
- Open or short circuit in motor A/B circuit
- Squib malfunction
- Wiring Harness Problems
- SRS control unit malfunction
- Contact corrosion
How to Fix
- Diagnostics of a circuit using a scanner and multimeter
- Checking the integrity of the wiring harness
- Inspect contacts and connectors for corrosion
- Replacing a faulty squib or SRS control unit if necessary
- Error reset and system check
Related codes
Error C0321 by Vehicle Brand
FAQ
What does the C0321 code mean?
C0321 is an OBD-II diagnostic trouble code that indicates: Motor A Or B Circuit Failure
What causes a C0321 error code?
The most common causes of C0321 include: Open or short circuit in motor A/B circuit; Squib malfunction; Wiring Harness Problems; SRS control unit malfunction.
How do I fix a C0321 diagnostic trouble code?
To fix C0321: Diagnostics of a circuit using a scanner and multimeter. Checking the integrity of the wiring harness. Inspect contacts and connectors for corrosion. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C0321?
Limited driving only, diagnose soon
How much does it cost to fix C0321?
The estimated repair cost for C0321 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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