B3873 2017 Chevrolet Silverado Code - Front Washer Relay Circuit
Quick Answer
The B3873 diagnostic trouble code (DTC) for the 2017 Chevrolet Silverado relates to the Front Washer Relay Circuit. Common causes include Faulty front washer relay, Damaged or corroded wiring in the front washer circuit, Blown fuse related to the washer system. 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
- B3873 2017 Chevrolet Silverado indicates Front Washer Relay Circuit.
- Common causes
- Common causes include Faulty front washer relay, Damaged or corroded wiring in the front washer circuit, Blown fuse related to the washer system.
- 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 B3873 2017 Chevrolet Silverado Description
The B3873 diagnostic trouble code (DTC) for the 2017 Chevrolet Silverado relates to the Front Washer Relay Circuit. This code indicates a problem with the circuit that controls the front windshield washer system in the vehicle. The front washer relay is responsible for activating the washer pump that sprays washer fluid onto the windshield to clean it while driving. When this circuit malfunctions, it can lead to issues with the windshield washer system, affecting visibility and overall safety while driving.
Common Causes of B3873 2017 Chevrolet Silverado
- Faulty front washer relay
- Damaged or corroded wiring in the front washer circuit
- Blown fuse related to the washer system
- Malfunctioning washer pump
- Issues with the washer fluid reservoir or tubing
Symptoms of B3873 2017 Chevrolet Silverado
- Front windshield washer not spraying fluid
- Washer pump not activating when washer switch is pressed
- Washer fluid not reaching the windshield
- Washer fluid leaking under the vehicle
How to Fix B3873 2017 Chevrolet Silverado
- Begin by inspecting the front washer relay and testing it for proper functionality. Replace the relay if it is found to be faulty.
- Check the wiring in the front washer circuit for any damage or corrosion. Repair or replace any damaged wires as needed.
- Inspect the fuse related to the washer system and replace it if it is blown.
- Test the washer pump to ensure it is working correctly. Replace the pump if it is malfunctioning.
- Check the washer fluid reservoir and tubing for any leaks or blockages, addressing any issues found.
Cost to Fix B3873 2017 Chevrolet Silverado
The typical repair costs for addressing the B3873 code on a 2017 Chevrolet Silverado can vary depending on the specific cause of the issue. In general, replacing a faulty front washer relay can cost between $50 and $100, while repairing damaged wiring or replacing a washer pump can range from $100 to $300. The total cost, including parts and labor, could be anywhere from $150 to $500. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's recommended to check with local shops for a more accurate estimate.
Tech Notes for B3873 2017 Chevrolet Silverado
B3873:02 Front Washer Relay Circuit Short to Ground
B3873:04 Front Washer Relay Circuit Open
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Frequently Asked Questions about B3873 2017 Chevrolet Silverado Code
1. What does the OBDII code B3873 mean on a 2017 Chevrolet Silverado?
Code B3873 indicates an issue with the front washer relay circuit, which is responsible for controlling the operation of the windshield washer system.
2. What are the common symptoms of the B3873 code on a 2017 Chevrolet Silverado?
Symptoms may include the windshield washer not activating, the washer pump not functioning, or a related warning light on the dashboard.
3. What causes the B3873 code to appear?
The code can be caused by a faulty front washer relay, wiring issues such as an open or short circuit, a malfunctioning washer pump, or a problem with the body control module (BCM).
4. How can I diagnose the B3873 code on my Silverado?
Start by checking the front washer relay and its connections, inspect the wiring for damage or corrosion, and test the washer pump for proper operation.
5. Can I still drive my Chevrolet Silverado with the B3873 code active?
Yes, the truck is drivable, but the windshield washer may not operate, which could reduce visibility in adverse weather conditions and compromise safety.
6. How do I fix the B3873 code on a 2017 Chevrolet Silverado?
Repairs may include replacing the front washer relay, repairing damaged wiring, cleaning corroded connectors, or replacing the washer pump if necessary.
7. Where is the front washer relay located on a 2017 Chevrolet Silverado?
The front washer relay is typically located in the underhood fuse box. Refer to your owner’s manual or fuse box diagram for its exact position.
8. How much does it cost to repair the B3873 code?
Repair costs vary but typically range from $50 to $200, depending on whether the issue is with the relay, wiring, or washer pump.
9. Can a faulty BCM cause the B3873 code?
Yes, a malfunctioning body control module can cause the code, but this is less common and should be considered only after ruling out simpler causes like the relay or wiring.
10. Do I need any special tools to fix the B3873 code?
Basic tools like a multimeter to test electrical connections and a socket set for component removal are usually sufficient for diagnosing and repairing this code.
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