B3949:04 Code - Right Front Turn Signal Circuit Open
Quick Answer
Ground is applied at all times to the turn signal/multifunction switch. Common causes include Faulty Right Front Turn Signal Lamp, Right Front Turn Signal Lamp harness is open or shorted, Right Front Turn Signal Lamp circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- B3949:04 indicates Right Front Turn Signal Circuit Open.
- Common causes
- Common causes include Faulty Right Front Turn Signal Lamp, Right Front Turn Signal Lamp harness is open or shorted, Right Front Turn Signal Lamp circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code B3949:04 Description
What are the Possible Causes of the DTC B3949:04?
- Faulty Right Front Turn Signal Lamp
- Right Front Turn Signal Lamp harness is open or shorted
- Right Front Turn Signal Lamp circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B3949:04?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B3949:04 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about B3949:04 Code
1. What does the OBDII code B3949:04 mean?
Code B3949:04 indicates an open circuit in the right front turn signal, meaning the signal is not receiving proper electrical continuity.
2. What are the common symptoms of a B3949:04 code?
Symptoms include the right front turn signal not working, a rapid clicking sound when signaling, or a warning light on the dashboard.
3. What causes the B3949:04 code to appear?
Common causes include a blown bulb, damaged wiring, a corroded connector, or a faulty turn signal socket.
4. Can a bad turn signal bulb trigger the B3949:04 code?
Yes, a burned-out or improperly installed turn signal bulb is a frequent reason for this code.
5. How do I fix the B3949:04 code?
Inspect and replace the right front turn signal bulb if necessary, check the wiring and connectors for damage, and repair or replace faulty components.
6. Is it safe to drive with the B3949:04 code active?
While the vehicle may still be drivable, it is unsafe because the right front turn signal will not function, increasing the risk of accidents.
7. How can I diagnose the B3949:04 code?
Use a multimeter to check for continuity in the wiring, inspect the bulb and socket, and verify there’s no corrosion or damage to the connectors.
8. Can a faulty turn signal switch cause the B3949:04 code?
It’s possible but less common. The issue is more likely in the bulb, wiring, or connectors.
9. How much does it cost to repair a B3949:04 code?
Costs vary depending on the issue. Replacing a bulb may cost $10-$20, while repairing damaged wiring could range from $50 to $200.
10. Will clearing the B3949:04 code fix the problem?
Clearing the code will reset the warning temporarily, but if the underlying issue isn’t resolved, the code will return.
Discuss the causes and fixes for B3949:04 OBDII Code
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