B3873 Chevrolet Code - Front Washer Relay Circuit
Quick Answer
The windshield washer function is controlled by the Body Control Module (BCM). Common causes include Faulty Front Washer Relay, Front Washer Relay harness is open or shorted, Front Washer Relay 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
- B3873 Chevrolet indicates Front Washer Relay Circuit.
- Common causes
- Common causes include Faulty Front Washer Relay, Front Washer Relay harness is open or shorted, Front Washer Relay 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 B3873 Chevrolet Description
What are the Possible Causes of the DTC B3873 Chevrolet?
- Faulty Front Washer Relay
- Front Washer Relay harness is open or shorted
- Front Washer Relay circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B3873 Chevrolet?
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.
Code Tech Notes
B3873:02 Front Washer Relay Circuit Short to Ground
B3873:04 Front Washer Relay Circuit Open
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B3873 Chevrolet 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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Information for Specific Chevrolet Models
- B3873 2014 Chevrolet Silverado — Front Washer Relay Circuit
- B3873 2015 Chevrolet Silverado — Front Washer Relay Circuit
- B3873 2016 Chevrolet Silverado — Front Washer Relay Circuit
- B3873 2017 Chevrolet Silverado — Front Washer Relay Circuit
- B3873 2018 Chevrolet Silverado — Front Washer Relay Circuit
Frequently Asked Questions about B3873 Chevrolet Code
1. What are common symptoms of OBDII code B3873 (Chevrolet) related to the Front Washer Relay Circuit?
- Common symptoms include inoperative front windshield washer fluid spraying, no sound from the washer pump, or the washer pump working intermittently.
2. What are the possible causes of OBDII code B3873 (Chevrolet) indicating an issue with the Front Washer Relay Circuit?
- Possible causes include a faulty front washer relay, damaged wiring or connectors in the washer circuit, a defective washer pump, or a blown fuse related to the washer system.
3. How can I diagnose the Front Washer Relay Circuit issue triggering OBDII code B3873 (Chevrolet)?
- Diagnosis involves checking the front washer relay for proper function, inspecting the wiring and connectors for any damage or corrosion, testing the washer pump for operation, and ensuring the fuse for the washer system is intact.
4. Can a DIY enthusiast repair OBDII code B3873 (Chevrolet) linked to the Front Washer Relay Circuit?
- Yes, DIY enthusiasts can attempt to repair this issue by replacing the front washer relay, repairing damaged wiring or connectors, testing and replacing the washer pump if necessary, and replacing any blown fuses.
5. How important is it to address OBDII code B3873 (Chevrolet) related to the Front Washer Relay Circuit promptly?
- It is important to address this issue promptly as a malfunctioning front washer system can compromise visibility while driving, especially in adverse weather conditions.
6. Are there any specific tools required to diagnose and repair OBDII code B3873 (Chevrolet) associated with the Front Washer Relay Circuit?
- Basic tools such as a multimeter, wiring diagram for the washer system, replacement front washer relay, and basic hand tools may be required to diagnose and repair this issue.
7. What are some preventive maintenance tips to avoid encountering OBDII code B3873 (Chevrolet) due to Front Washer Relay Circuit problems?
- Regularly checking and topping up windshield washer fluid, ensuring proper operation of the washer system during routine vehicle inspections, and addressing any washer system issues promptly can help prevent this code from appearing.
8. Can extreme weather conditions impact the Front Washer Relay Circuit and trigger OBDII code B3873 (Chevrolet)?
- Yes, extreme cold or hot weather conditions can affect the operation of the front washer system components, potentially leading to issues with the Front Washer Relay Circuit and triggering the OBDII code B3873.
9. Is it safe to continue driving with OBDII code B3873 (Chevrolet) indicating a problem with the Front Washer Relay Circuit?
- It is not recommended to continue driving with this issue unresolved, as it can impact visibility and compromise safe driving conditions, especially in situations requiring the use of the front washer system.
10. How much can a typical repair for OBDII code B3873 (Chevrolet) related to the Front Washer Relay Circuit cost?
- The cost of repair can vary depending on the root cause of the issue, but it may range from $50 to $200 for parts and labor, excluding diagnostic fees.
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