B3873 2015 Chevrolet Silverado Code - Front Washer Relay Circuit
Quick Answer
The B3873 diagnostic trouble code (DTC) on a 2015 Chevrolet Silverado relates to the front washer relay circuit. Common causes include Faulty front washer relay, Wiring or connection issues in the front washer relay circuit, Defective washer pump. 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 2015 Chevrolet Silverado indicates Front Washer Relay Circuit.
- Common causes
- Common causes include Faulty front washer relay, Wiring or connection issues in the front washer relay circuit, Defective washer pump.
- 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 2015 Chevrolet Silverado Description
The B3873 diagnostic trouble code (DTC) on a 2015 Chevrolet Silverado relates to the front washer relay circuit. This code indicates a malfunction in the circuit that controls the front windshield washer system. When this code is triggered, it means that there is a problem with the relay that controls the front windshield washer pump, which can lead to the system not functioning properly. The relay is responsible for sending power to the washer pump when the washer switch is activated.
Common Causes of B3873 2015 Chevrolet Silverado
- Faulty front washer relay.
- Wiring or connection issues in the front washer relay circuit.
- Defective washer pump.
- Corrosion or damage to the electrical components in the circuit.
- Issues with the washer switch or control module.
Symptoms of B3873 2015 Chevrolet Silverado
- Front windshield washer system not spraying fluid.
- Wipers not clearing the windshield effectively.
- No sound of the washer pump activating when the washer switch is pressed.
- Dashboard warning light indicating a washer system malfunction.
How to Fix B3873 2015 Chevrolet Silverado
- Begin by diagnosing the front washer relay circuit using a diagnostic scanner to retrieve the trouble codes and pinpoint the exact issue.
- Inspect the wiring and connections in the front washer relay circuit for any signs of damage or corrosion. Repair or replace any damaged components as needed.
- Test the front washer relay for functionality and replace it if it is found to be faulty.
- Check the washer pump for proper operation and replace it if necessary.
- Clear the trouble codes from the vehicle's computer and test the front washer system to ensure that it is functioning correctly.
Cost to Fix B3873 2015 Chevrolet Silverado
The cost of repairing the front washer relay circuit on a 2015 Chevrolet Silverado can vary depending on the specific issue and the cost of parts and labor. Typically, the cost of replacing a front washer relay can range from $50 to $150, while the cost of a new washer pump can range from $20 to $100. Labor costs for this repair can vary, but on average, you can expect to pay between $100 to $200 for the repair. Keep in mind that labor rates at auto repair shops can vary based on location and other factors, so it's recommended to obtain a few quotes before proceeding with the repair.
Tech Notes for B3873 2015 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 2015 Chevrolet Silverado Code
1. What does the OBDII code B3873 mean on a 2015 Chevrolet Silverado?
B3873 indicates an issue in the Front Washer Relay Circuit, which controls the operation of the windshield washer system.
2. What are the common symptoms of B3873 in a 2015 Chevrolet Silverado?
Symptoms may include the windshield washer not functioning, the washer pump not activating, or an illuminated check engine or related warning light.
3. What causes the B3873 code to appear?
This code is usually triggered by a faulty front washer relay, damaged wiring or connectors in the washer circuit, or a malfunctioning windshield washer pump.
4. Can I still drive my Silverado with the B3873 code active?
Yes, you can still drive, but the windshield washer system may not work, which could impact visibility in adverse weather conditions.
5. How do I diagnose the B3873 code on my 2015 Silverado?
Start by inspecting the washer relay, wiring, and connections for damage or corrosion. Use a multimeter to test the circuit and confirm proper voltage and continuity.
6. What parts might need replacement to fix the B3873 code?
Potential parts include the front washer relay, the windshield washer pump, or damaged wiring/connectors in the circuit.
7. 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 a simple relay replacement or wiring repair.
8. Can I fix the B3873 code myself?
If you have basic automotive repair knowledge, you can inspect and replace the washer relay or repair damaged wiring. However, more complex electrical issues may require professional assistance.
9. How do I prevent the B3873 code from recurring?
Regularly inspect the washer system components for damage, ensure connectors are clean and secure, and replace faulty parts promptly.
10. Does the B3873 code require reprogramming or software updates?
No, this code typically doesn’t involve reprogramming. It’s an electrical fault that can be resolved by repairing or replacing the faulty components in the circuit.
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