B3819 Code - Left Rear Window Up Control Circuit
Quick Answer
The Body Control Module (BCM) grounds the control side of the left rear power window up relay upon receiving a class 2 message from the Driver Door Module (DDM). Common causes include Faulty Left Rear Power Window Switch, Left Rear Power Window Switch harness is open or shorted, Left Rear Power Window Switch 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
- B3819 indicates Left Rear Window Up Control Circuit.
- Common causes
- Common causes include Faulty Left Rear Power Window Switch, Left Rear Power Window Switch harness is open or shorted, Left Rear Power Window Switch 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 B3819 Description
What are the Possible Causes of the DTC B3819?
- Faulty Left Rear Power Window Switch
- Left Rear Power Window Switch harness is open or shorted
- Left Rear Power Window Switch circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B3819?
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 B3819 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 Makes
- B3819 Buick — Left Rear Window Up Control Circuit
- B3819 Cadillac — Left Rear Window Up Control Circuit
- B3819 Chevrolet — Left Rear Window Up Control Circuit
- B3819 GMC — Left Rear Window Up Control Circuit
Frequently Asked Questions about B3819 Code
1. What does OBDII code B3819 mean?
B3819 indicates a fault in the left rear window up control circuit, often caused by wiring, a faulty switch, or a motor issue.
2. What are the symptoms of code B3819?
Symptoms include the left rear window not moving up, intermittent operation, or unresponsiveness when using the controls.
3. What causes code B3819 to appear?
Common causes include damaged wiring, a malfunctioning window switch, a defective window motor, or poor electrical connections.
4. Can I still drive my car with code B3819?
Yes, but the left rear window may not function properly, which could be inconvenient or compromise weather protection.
5. How do you diagnose code B3819?
Diagnosis involves checking the wiring and connectors for damage, testing the window switch and motor for proper operation, and scanning for additional codes.
6. How can I fix code B3819?
Repairs may include replacing damaged wiring, installing a new window switch or motor, or cleaning corroded connectors.
7. Is code B3819 common in all vehicles?
No, it is specific to vehicles with advanced body control systems and may occur more frequently in certain makes and models.
8. Can a blown fuse cause code B3819?
Yes, a blown fuse in the power window circuit can cause the code by interrupting electrical flow to the left rear window.
9. How much does it cost to fix code B3819?
Repair costs can vary, typically ranging from $50 to $300 depending on whether the issue is with wiring, the switch, or the motor.
10. Can resetting the vehicle’s computer clear code B3819?
Clearing the code may temporarily remove it, but if the underlying issue is not resolved, the code will return.
Discuss the causes and fixes for B3819 OBDII Code
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