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Engine-Codes – Pontiac – B1910 Pontiac

B1910 Pontiac Code - Generator L Terminal Open Circuit

Quick Answer

The B1910 diagnostic trouble code for Pontiac vehicles indicates an open circuit in the Generator L terminal. Common causes include Corroded or loose wiring at the Generator L terminal, Physical damage to the wiring or connection point, Wear and tear on the electrical components leading to a break in the circuit. 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
B1910 Pontiac indicates Generator L Terminal Open Circuit.
Common causes
Common causes include Corroded or loose wiring at the Generator L terminal, Physical damage to the wiring or connection point, Wear and tear on the electrical components leading to a break in the circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code B1910 Pontiac Description

The B1910 diagnostic trouble code for Pontiac vehicles indicates an open circuit in the Generator L terminal. The Generator L terminal is a connection point in the vehicle's charging system that plays a crucial role in regulating the output of the alternator and ensuring a steady supply of electrical power to the vehicle's various components. When this connection is interrupted or broken, it can lead to a range of issues that affect the overall performance and functionality of the vehicle.

OBDII Code B1910 Pontiac - Generator L Terminal Open Circuit
B1910 Pontiac Code - Generator L Terminal Open Circuit

Common Causes of B1910 Pontiac

  1. Corroded or loose wiring at the Generator L terminal.
  2. Physical damage to the wiring or connection point.
  3. Wear and tear on the electrical components leading to a break in the circuit.
  4. Faulty alternator not providing the proper output to the Generator L terminal.
  5. Electrical system overload causing damage to the wiring or connection.

Symptoms of B1910 Pontiac

  1. Dimming or flickering lights: Due to insufficient power being supplied to the vehicle's electrical system, you may notice that the lights dim or flicker while driving.
  2. Difficulty starting the engine: A weak or depleted battery caused by the open circuit in the Generator L terminal can lead to difficulties starting the engine.
  3. Battery warning light: The vehicle's battery warning light may illuminate on the dashboard as a result of the charging system malfunction.
  4. Electrical system malfunctions: Other electrical components such as power windows, radio, or HVAC system may not function properly due to inadequate power supply.

How to Fix B1910 Pontiac

  1. Inspect the wiring and connections at the Generator L terminal for any signs of corrosion, damage, or looseness.
  2. Repair or replace any damaged or corroded wiring at the Generator L terminal.
  3. Test the alternator output to ensure it is functioning correctly and providing the proper voltage to the Generator L terminal.
  4. Clear the diagnostic trouble code from the vehicle's system using a scan tool.
  5. Test drive the vehicle to ensure that the charging system is operating properly and that the symptoms associated with the B1910 code have been resolved.

Cost to Fix B1910 Pontiac

The cost of repairing an open circuit in the Generator L terminal can vary depending on the extent of the damage, the need for replacement parts, and the labor rates of the auto repair shop. Typically, the cost of this repair can range from $150 to $400, including parts and labor. It's important to note that diagnostic time and labor rates can vary, so it's advisable to consult with a trusted auto repair shop for a more accurate estimate based on your specific vehicle make and model.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B1910 Pontiac Code

1. What are the common symptoms of OBDII code B1910 Pontiac (Generator L Terminal Open Circuit)?

The common symptoms include issues with the electrical system, such as dimming lights, dead battery, or problems with the alternator.

2. What can cause the OBDII code B1910 Pontiac to appear?

This code usually appears due to a damaged or loose connection in the wiring harness related to the generator L terminal.

3. How can I diagnose the Generator L Terminal Open Circuit issue in my Pontiac?

You can start by checking the wiring harness for any visible damage or loose connections. Using a multimeter to test the continuity of the circuit can also help pinpoint the problem.

4. Can a faulty alternator cause the B1910 code to trigger?

Yes, a faulty alternator can sometimes lead to the Generator L Terminal Open Circuit code. It's important to test the alternator's output and connections as part of the diagnostic process.

5. What should I do if I encounter the B1910 code in my Pontiac?

If you encounter this code, it's best to address the issue promptly to prevent further damage to the electrical system. Checking the wiring and connections, as well as consulting a professional if needed, is recommended.

6. Is it safe to continue driving my Pontiac with the B1910 code present?

It is not recommended to continue driving your vehicle with the Generator L Terminal Open Circuit issue unresolved, as it can lead to electrical problems and potential breakdowns.

7. Can I repair the B1910 code in my Pontiac myself?

If you have experience with automotive electrical systems and access to the necessary tools, you may be able to repair the issue yourself by inspecting and repairing the wiring or connections related to the generator L terminal.

8. How much does it typically cost to fix the Generator L Terminal Open Circuit problem in a Pontiac?

The cost of repair can vary depending on the extent of the damage and whether you choose to DIY or seek professional help. It's advisable to get a few quotes from reputable mechanics to compare prices.

9. Will resetting the OBDII code make the issue go away?

Resetting the code may temporarily clear the warning light, but it will not fix the underlying problem causing the Generator L Terminal Open Circuit issue. It's crucial to diagnose and address the root cause of the code.

10. Is the B1910 code specific to Pontiac vehicles, or can it occur in other car makes?

While the B1910 OBDII code is associated with Pontiac vehicles, similar issues with the generator L terminal circuit can occur in other car makes and models as well.

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