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B1982 Chevrolet Code - Battery Voltage High

Quick Answer

The B1982 Chevrolet diagnostic trouble code indicates that the battery voltage in the vehicle is too high. Common causes include Faulty voltage regulator: The voltage regulator is responsible for controlling the voltage output from the alternator, A malfunctioning voltage regulator can cause the battery voltage to be too high, Short circuits: Short circuits in the electrical system can cause voltage spikes, leading to high battery voltage. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means
B1982 Chevrolet indicates Battery Voltage High.
Common causes
Common causes include Faulty voltage regulator: The voltage regulator is responsible for controlling the voltage output from the alternator, A malfunctioning voltage regulator can cause the battery voltage to be too high, Short circuits: Short circuits in the electrical system can cause voltage spikes, leading to high battery voltage.
Severity
Moderate - service should be scheduled soon.
Can I drive?
The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
What is this?
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code B1982 Chevrolet Description

The B1982 Chevrolet diagnostic trouble code indicates that the battery voltage in the vehicle is too high. This means that the electrical system in the vehicle is experiencing a voltage level that exceeds the normal operating range. The battery voltage being too high can have detrimental effects on various electronic components in the vehicle, potentially leading to malfunctions and damage if not addressed promptly.

OBDII Code B1982 Chevrolet - Battery Voltage High
B1982 Chevrolet Code - Battery Voltage High

Common Causes of B1982 Chevrolet

  1. Faulty voltage regulator: The voltage regulator is responsible for controlling the voltage output from the alternator. A malfunctioning voltage regulator can cause the battery voltage to be too high.
  2. Short circuits: Short circuits in the electrical system can cause voltage spikes, leading to high battery voltage.
  3. Faulty alternator: A malfunctioning alternator can overcharge the battery, resulting in high battery voltage.
  4. Wiring issues: Damaged or corroded wiring in the electrical system can cause resistance and voltage fluctuations, leading to high battery voltage.
  5. Aftermarket accessories: Adding aftermarket accessories like amplifiers or lighting systems without proper voltage regulation can cause high battery voltage.

Symptoms of B1982 Chevrolet

  1. Dimming or flickering lights
  2. Erratic behavior of electronic components
  3. Check engine light illuminated
  4. Difficulty starting the vehicle
  5. Vehicle stalling while driving

How to Fix B1982 Chevrolet

  1. Check the voltage regulator: Test the voltage regulator to ensure it is functioning correctly. Replace if necessary.
  2. Inspect the alternator: Test the alternator's output voltage and charging system to determine if it is overcharging the battery. Replace if faulty.
  3. Check for short circuits: Inspect the wiring harness for any short circuits that may be causing high battery voltage. Repair or replace damaged wiring.
  4. Remove aftermarket accessories: If aftermarket accessories are causing the issue, remove or replace them with components that have proper voltage regulation.
  5. Reset the battery: Disconnect the battery and reset the vehicle's electrical system to clear any fault codes related to high battery voltage.

Cost to Fix B1982 Chevrolet

The cost of repairing the B1982 Chevrolet code can vary depending on the specific cause of the issue and the extent of the damage. On average, the repair cost for addressing high battery voltage can range from $200 to $500, including parts and labor. However, it is essential 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 based on your vehicle make and model.

What does this mean?

Tech Notes for B1982 Chevrolet

DTC B1982 BATTERY VOLTAGE TOO HIGH BCM

DTC B1982 BATTERY VOLTAGE TOO HIGH RADIO

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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 B1982 Chevrolet Code

1. What does the OBDII code B1982 mean on a Chevrolet?

B1982 indicates that the vehicle's control module has detected excessively high battery voltage, which could damage electrical components.

2. What are the common symptoms of the B1982 code in a Chevrolet?

Symptoms may include warning lights on the dashboard, erratic electrical behavior, dimming or flickering lights, and potential charging system issues.

3. What causes the B1982 code to appear in a Chevrolet?

Common causes include a faulty voltage regulator, overcharging alternator, loose or corroded battery connections, or a failing battery.

4. Can driving with the B1982 code damage my Chevrolet?

Yes, continued driving with high battery voltage can damage sensitive electrical components, including the ECU and other control modules.

5. How do I diagnose the B1982 code on my Chevrolet?

Start by checking the battery voltage with a multimeter. Inspect the alternator, voltage regulator, and battery connections to identify any faults.

6. Can a failing alternator cause the B1982 code in a Chevrolet?

Yes, a malfunctioning alternator that produces excessive voltage can trigger the B1982 code.

7. What is the recommended fix for the B1982 code in a Chevrolet?

Repairs may include replacing the alternator or voltage regulator, tightening or cleaning battery connections, or replacing the battery if necessary.

8. Can a bad battery trigger the B1982 code in a Chevrolet?

Yes, a failing battery with internal issues can cause irregular voltage levels that may lead to the B1982 code.

9. How much does it cost to fix the B1982 code on a Chevrolet?

Repair costs vary but may range from $100 to $400, depending on whether the alternator, voltage regulator, or battery needs replacement.

10. How can I prevent the B1982 code from occurring in my Chevrolet?

Regular maintenance, such as testing the battery and alternator periodically and ensuring all connections are clean and secure, can help prevent this issue.

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