B3950 2018 Chevrolet Silverado Code - Left Rear Turn Signal Circuit
Quick Answer
The B3950 code on a 2018 Chevrolet Silverado indicates a fault in the left rear turn signal circuit. Common causes include Faulty turn signal bulb or socket, Corroded or damaged wiring in the turn signal circuit, Blown fuse related to the turn signal circuit. 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
- B3950 2018 Chevrolet Silverado indicates Left Rear Turn Signal Circuit.
- Common causes
- Common causes include Faulty turn signal bulb or socket, Corroded or damaged wiring in the turn signal circuit, Blown fuse related to the turn signal circuit.
- 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.
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Code B3950 2018 Chevrolet Silverado Description
The B3950 code on a 2018 Chevrolet Silverado indicates a fault in the left rear turn signal circuit. This code is triggered when the vehicle's onboard diagnostic system detects an issue with the circuit responsible for the left rear turn signal. The turn signal circuit is crucial for indicating the vehicle's intention to turn or change lanes, ensuring safety on the road.
Common Causes of B3950 2018 Chevrolet Silverado
- Faulty turn signal bulb or socket
- Corroded or damaged wiring in the turn signal circuit
- Blown fuse related to the turn signal circuit
- Malfunctioning turn signal relay
- Issues with the vehicle's body control module
Symptoms of B3950 2018 Chevrolet Silverado
- Left rear turn signal not illuminating or blinking irregularly
- Turn signal indicator on the dashboard blinking rapidly
- Turn signal on the left rear of the vehicle staying on continuously
- Turn signal on the left rear of the vehicle not turning off after completing a turn
- Check engine light illuminated on the dashboard
How to Fix B3950 2018 Chevrolet Silverado
- Begin by inspecting the left rear turn signal bulb and socket for any signs of damage. Replace the bulb if necessary.
- Check the wiring in the turn signal circuit for corrosion or damage. Repair or replace any faulty wiring.
- Inspect the fuse related to the turn signal circuit and replace it if blown.
- Test the turn signal relay for proper operation and replace it if defective.
- If the issue persists, diagnose the body control module for any faults related to the turn signal circuit and address as needed.
Cost to Fix B3950 2018 Chevrolet Silverado
The cost of repairing the left rear turn signal circuit can vary depending on the specific issue causing the B3950 code. In general, the cost of replacing a turn signal bulb or socket can range from $20 to $50. Repairing wiring or replacing a fuse may cost between $50 and $150. If the issue is more complex and involves replacing the turn signal relay or addressing problems with the body control module, the repair costs can increase significantly.
Tech Notes for B3950 2018 Chevrolet Silverado
B3950:02 Left Rear Turn Signal Circuit Short to Ground
B3950:04 Left Rear Turn Signal Circuit Open
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Frequently Asked Questions about B3950 2018 Chevrolet Silverado Code
1. What are the common symptoms of OBDII code B3950 on a 2018 Chevrolet Silverado related to the Left Rear Turn Signal Circuit?
The common symptoms include the left rear turn signal not functioning properly, such as staying on constantly or not flashing when activated.
2. What are some possible causes of OBDII code B3950 on a 2018 Chevrolet Silverado?
Potential causes may include a faulty left rear turn signal bulb, a damaged wiring harness, a malfunctioning turn signal switch, or a problem with the body control module.
3. How can I diagnose the issue causing OBDII code B3950 on my 2018 Chevrolet Silverado?
You can start by visually inspecting the left rear turn signal bulb, checking the wiring for any visible damage, and using a multimeter to test for continuity in the circuit. If needed, consult a professional mechanic for further diagnostics.
4. Can a DIY enthusiast repair OBDII code B3950 on a 2018 Chevrolet Silverado related to the Left Rear Turn Signal Circuit?
Depending on the exact cause, DIY repairs may be possible, such as replacing a faulty bulb or repairing damaged wiring. However, more complex issues may require professional expertise to ensure proper diagnosis and repair.
5. How important is it to address OBDII code B3950 on a 2018 Chevrolet Silverado promptly?
It is essential to address this code promptly as it indicates a malfunction in the left rear turn signal circuit, which can compromise safety on the road by reducing visibility to other drivers when signaling to turn or change lanes.
6. Can driving with OBDII code B3950 on a 2018 Chevrolet Silverado cause any further damage?
Continuously driving with this code unresolved may not cause further damage to the vehicle itself, but it poses a safety risk due to impaired turn signal functionality, potentially leading to accidents or traffic violations.
7. Are there any recalls or technical service bulletins related to OBDII code B3950 on a 2018 Chevrolet Silverado?
It is advisable to check with a Chevrolet dealership or visit the manufacturer's website to inquire about any recalls or technical service bulletins pertaining to OBDII code B3950 and the Left Rear Turn Signal Circuit on the 2018 Silverado.
8. How much can I expect to pay for repairing OBDII code B3950 on a 2018 Chevrolet Silverado at a professional auto repair shop?
The cost of repairing this code can vary depending on the exact cause of the issue and labor rates in your area. It is recommended to obtain quotes from multiple reputable auto repair shops for an accurate estimate.
9. Is it possible for a loose connection to cause OBDII code B3950 on a 2018 Chevrolet Silverado?
Yes, a loose or poor connection in the left rear turn signal circuit can trigger OBDII code B3950. Ensure all connections are secure and free of corrosion when diagnosing and repairing the issue.
10. Can extreme weather conditions contribute to triggering OBDII code B3950 on a 2018 Chevrolet Silverado?
Extreme weather conditions, such as heavy rain or snow, can potentially exacerbate existing issues in the left rear turn signal circuit, leading to the triggering of OBDII code B3950 on a 2018 Chevrolet Silverado.
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