B3950
Left Rear Turn Signal Circuit
B3950 is an OBD-II diagnostic trouble code meaning: Left Rear Turn Signal Circuit. Common causes: burnt out lamp, open circuit. Estimated repair cost: $6–56.
Symptoms
- Left rear turn signal does not work
- Rapid flashing of the direction indicators on the dashboard
- Error message on display
Causes
- Burnt out lamp
- Open circuit
- Poor contact in the connector
- Wiring harness damage
- Control unit malfunction
How to Fix
- Check the condition of the turn signal lamp
- Inspect connectors and wires for damage
- Check continuity with a multimeter
- Replace faulty components
- Reset the error code and check the system operation
Related codes
Error B3950 by Vehicle Brand
FAQ
What does the B3950 code mean?
B3950 is an OBD-II diagnostic trouble code that indicates: Left Rear Turn Signal Circuit
What causes a B3950 error code?
The most common causes of B3950 include: Burnt out lamp; Open circuit; Poor contact in the connector; Wiring harness damage.
How do I fix a B3950 diagnostic trouble code?
To fix B3950: Check the condition of the turn signal lamp. Inspect connectors and wires for damage. Check continuity with a multimeter. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B3950?
Limited driving only, diagnose soon
How much does it cost to fix B3950?
The estimated repair cost for B3950 is $6–56. Actual cost depends on your vehicle, location, and labor rates.
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