B3971
Folding Top Position Sensor
B3971 is an OBD-II diagnostic trouble code meaning: Folding Top Position Sensor. Common causes: position sensor malfunction, broken or damaged wiring harness. Estimated repair cost: $56–167.
Symptoms
- Retractable roof failure to operate
- Error message on the dashboard
- Problems with automatic opening/closing of the roof
Causes
- Position sensor malfunction
- Broken or damaged wiring harness
- Contact corrosion
- Problems with the control unit
How to Fix
- Check the condition of the sensor and its connection
- Check the integrity of the wiring harness
- Replace sensor if necessary
- Update the control unit firmware
Related codes
Error B3971 by Vehicle Brand
FAQ
What does the B3971 code mean?
B3971 is an OBD-II diagnostic trouble code that indicates: Folding Top Position Sensor
What causes a B3971 error code?
The most common causes of B3971 include: Position sensor malfunction; Broken or damaged wiring harness; Contact corrosion; Problems with the control unit.
How do I fix a B3971 diagnostic trouble code?
To fix B3971: Check the condition of the sensor and its connection. Check the integrity of the wiring harness. Replace sensor if necessary. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B3971?
Yes, but get it checked soon
How much does it cost to fix B3971?
The estimated repair cost for B3971 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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