C0140
ABS CAN Communication Malfunction
C0140 is an OBD-II diagnostic trouble code meaning: ABS CAN Communication Malfunction. Common causes: broken or damaged can bus wiring harness, corrosion of contacts in connectors. Estimated repair cost: $56–278.
Symptoms
- The ABS indicator on the dashboard is on
- ABS system does not work
- Related systems disabled (ESP, ASR)
- Incorrect readings from other sensors
Causes
- Broken or damaged CAN bus wiring harness
- Corrosion of contacts in connectors
- ABS module malfunction
- ABS module power problems
- ABS module software failure
How to Fix
- Check the integrity of the CAN bus wiring harness
- Inspect the connectors of the ABS module and other associated ECUs for corrosion or damage.
- Check the power and ground of the ABS module
- Diagnose the ABS module using a scanner
- If necessary, reflash the ABS module
- Replace the ABS module if it is faulty
Related codes
Error C0140 by Vehicle Brand
FAQ
What does the C0140 code mean?
C0140 is an OBD-II diagnostic trouble code that indicates: ABS CAN Communication Malfunction
What causes a C0140 error code?
The most common causes of C0140 include: Broken or damaged CAN bus wiring harness; Corrosion of contacts in connectors; ABS module malfunction; ABS module power problems.
How do I fix a C0140 diagnostic trouble code?
To fix C0140: Check the integrity of the CAN bus wiring harness. Inspect the connectors of the ABS module and other associated ECUs for corrosion or damage.. Check the power and ground of the ABS module. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C0140?
Limited driving only, diagnose soon
How much does it cost to fix C0140?
The estimated repair cost for C0140 is $56–278. Actual cost depends on your vehicle, location, and labor rates.
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