C1729
Vehicle Speed Signal
C1729 is an OBD-II diagnostic trouble code meaning: Vehicle Speed Signal. Common causes: speed sensor malfunction, open or shorted wiring harness. Estimated repair cost: $56–167.
Symptoms
- Incorrect operation of the speedometer
- Disabling cruise control
- ABS or ESP malfunction
- Check Engine light comes on
Causes
- Speed sensor malfunction
- Open or shorted wiring harness
- Problems with the control unit
- Mechanical damage to system elements
How to Fix
- Check speed sensors on wheels and gearbox
- Inspect the wiring harness for damage
- Check connections and contacts
- Scan the control unit for errors
- Replace faulty components
Related codes
FAQ
What does the C1729 code mean?
C1729 is an OBD-II diagnostic trouble code that indicates: Vehicle Speed Signal
What causes a C1729 error code?
The most common causes of C1729 include: Speed sensor malfunction; Open or shorted wiring harness; Problems with the control unit; Mechanical damage to system elements.
How do I fix a C1729 diagnostic trouble code?
To fix C1729: Check speed sensors on wheels and gearbox. Inspect the wiring harness for damage. Check connections and contacts. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C1729?
Limited driving only, diagnose soon
How much does it cost to fix C1729?
The estimated repair cost for C1729 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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