AutoCodes – Chevrolet – B1982 Chevrolet

B1982 Chevrolet Code - Battery Voltage High

Quick Answer

Battery voltage is supplied to the Body Control Module (BCM). Common causes include Faulty Body Control Module (BCM), Body Control Module (BCM) harness is open or shorted, Body Control Module (BCM) circuit poor electrical connection. 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 Body Control Module (BCM), Body Control Module (BCM) harness is open or shorted, Body Control Module (BCM) circuit poor electrical connection.
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.

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Code Popularity 3,516

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 02, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B1982 Chevrolet Description

Battery voltage is supplied to the Body Control Module (BCM). BCM utilizes voltage to perform all BCM functions. BCM constantly measures this battery voltage signal. The Diagnostic Trouble Code (DTC) B1982 will set when battery voltage measurement is greater than 15.5 volts for 4 consecutive monitoring cycles (1200 milliseconds). DTC B1982 will clear when the battery voltage is less than 15 volts for 4 consecutive monitoring cycles or when scan tool is used. A history DTC will clear after 50 consecutive ignition cycles if conditions for fault no longer exist.

OBDII Code B1982 Chevrolet - Battery Voltage High - AutoCodes.com — B1982 Chevrolet Code - Battery Voltage High

What does this mean?

What are the Possible Causes of the DTC B1982 Chevrolet?

Faulty Body Control Module (BCM)
Body Control Module (BCM) harness is open or shorted
Body Control Module (BCM) circuit poor electrical connection

How to Fix the DTC B1982 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.

What does this mean?

Code Tech Notes

DTC B1982 BATTERY VOLTAGE TOO HIGH BCM
DTC B1982 BATTERY VOLTAGE TOO HIGH RADIO

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1982 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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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.