B3387 Code - Right Front Window Up Switch Circuit Low
Quick Answer
The diagnostic code B3387 indicates a problem with the right front window up switch circuit being low. Common causes include Faulty right front window switch, Damaged wiring or connectors in the window switch circuit, Malfunctioning control module. 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
- B3387 indicates Right Front Window Up Switch Circuit Low.
- Common causes
- Common causes include Faulty right front window switch, Damaged wiring or connectors in the window switch circuit, Malfunctioning control module.
- 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 B3387 Description
The diagnostic code B3387 indicates a problem with the right front window up switch circuit being low. This means that the control module has detected a lower than expected voltage from the switch that operates the right front window in the "up" position. This issue can prevent the window from functioning properly, causing inconvenience and potential safety concerns for the driver and passengers.
Common Causes of B3387
- Faulty right front window switch.
- Damaged wiring or connectors in the window switch circuit.
- Malfunctioning control module.
- Defective window motor.
- Water damage or corrosion in the wiring harness.
Symptoms of B3387
- Inability to roll up the right front window.
- Intermittent operation of the right front window.
- Unresponsive switch when attempting to raise the window.
- Unusual noises coming from the window mechanism when trying to roll it up.
How to Fix B3387
- Begin by diagnosing the specific cause of the issue using a diagnostic tool to pinpoint the exact problem.
- Inspect the right front window switch and replace it if found to be faulty.
- Check the wiring and connectors in the circuit for any damage or corrosion, repairing or replacing as necessary.
- Test the control module for proper functioning and replace if needed.
- Examine the window motor for any issues and replace it if it is determined to be the cause of the problem.
Cost to Fix B3387
The cost of repairing the right front window up switch circuit low issue can vary depending on the specific cause of the problem and the labor rates in your area. On average, you can expect to pay between $150 to $300 for parts and labor. However, it is important to note that diagnosis time and labor rates at auto repair shops can vary, so it is advisable to check with local shops for a more accurate estimate. Additionally, rates at dealerships or in metropolitan areas may be higher, while independent shops might offer more competitive pricing.
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Code B3387 Information for Specific Makes
- B3387 Buick — Right Front Window Up Switch Circuit Low
- B3387 Cadillac — Right Front Window Up Switch Circuit Low
- B3387 Chevrolet — Right Front Window Up Switch Circuit Low
- B3387 GMC — Right Front Window Up Switch Circuit Low
Frequently Asked Questions about B3387 Code
1. What does the OBDII code B3387 mean?
The B3387 code indicates a low voltage or malfunction in the right front window up switch circuit, suggesting an issue with the electrical pathway controlling the window's upward movement.
2. What are the common symptoms of the B3387 code?
Symptoms may include the right front window not rolling up, intermittent functionality, or no response from the window switch.
3. What causes the B3387 code to appear?
Common causes include a faulty window switch, damaged wiring or connectors in the circuit, or a malfunctioning window motor.
4. How is the B3387 code diagnosed?
A technician will inspect the window switch, check the wiring and connectors for damage or corrosion, and test the circuit's voltage to identify the fault.
5. Can I still drive with the B3387 code active?
Yes, your vehicle is still drivable, but the right front window may not function properly, which could be inconvenient or a security risk.
6. How do you fix the B3387 code?
Repairs may involve replacing the window switch, repairing or replacing damaged wiring, or addressing issues with the window motor or control module.
7. How much does it cost to repair the B3387 code?
Repair costs vary but typically range from $100 to $300, depending on whether the issue is a faulty switch, damaged wiring, or another component.
8. Can I fix the B3387 code myself?
If you're experienced with electrical systems, you can inspect and replace the window switch or repair damaged wiring. However, a professional diagnosis is recommended for more complex issues.
9. Will clearing the B3387 code with a scan tool fix the problem?
Clearing the code may temporarily remove it, but the underlying issue must be resolved to prevent the code from returning.
10. What tools are needed to troubleshoot the B3387 code?
Common tools include a multimeter, wiring diagrams, and possibly a scan tool to monitor live data and confirm proper circuit operation.
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