B3949
Right Front Turn Signal Circuit
B3949 is an OBD-II diagnostic trouble code meaning: Right Front Turn Signal Circuit. Common causes: burnt out turn signal lamp, open or short circuit in wiring harness. Estimated repair cost: $11–111.
Symptoms
- The turn indicator on the dashboard flashes at double speed
- The right front turn signal does not work
- Possible messages on the on-board computer display
Causes
- Burnt out turn signal lamp
- Open or short circuit in wiring harness
- Poor contact in headlight connector
- Turn signal relay malfunction
- Body Control Module (BCM) Problems
- Malfunction of the turn switch itself
How to Fix
- Check and, if necessary, replace the turn signal lamp
- Check the integrity of the wiring harness
- Check contacts in connectors
- Check the voltage on the turn signal circuit
- If necessary, replace the turn signal relay
- If all of the above are OK, check the body control module
Related codes
Error B3949 by Vehicle Brand
FAQ
What does the B3949 code mean?
B3949 is an OBD-II diagnostic trouble code that indicates: Right Front Turn Signal Circuit
What causes a B3949 error code?
The most common causes of B3949 include: Burnt out turn signal lamp; Open or short circuit in wiring harness; Poor contact in headlight connector; Turn signal relay malfunction.
How do I fix a B3949 diagnostic trouble code?
To fix B3949: Check and, if necessary, replace the turn signal lamp. Check the integrity of the wiring harness. Check contacts in connectors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B3949?
Limited driving only, diagnose soon
How much does it cost to fix B3949?
The estimated repair cost for B3949 is $11–111. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat