AutoCodes – Generic – B1982

B1982 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 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 6,313

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

What does this mean?

What are the Possible Causes of the DTC B1982?

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?

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 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.

Need more information about the B1982 code?

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Need Help with the Code?

Get the B1982 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1982 Buick — Battery Voltage High
B1982 Cadillac — Battery Voltage High
B1982 Chevrolet — Battery Voltage High
B1982 Chrysler — Power Liftgate Latch Control 1 Circuit Open
B1982 Dodge — Power Liftgate Latch Control 1 Circuit Open
B1982 GMC — Battery Voltage High
B1982 Jeep — Power Liftgate Latch Control 1 Circuit Open
B1982 Pontiac — Battery Voltage High
B1982 RAM — Power Liftgate Latch Control 1 Circuit Open
B1982 Saturn — Battery Voltage High

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 Code

1. What are the common symptoms of OBDII code B1982 (Battery Voltage High)?

- The common symptoms of code B1982 include illuminated battery warning light on the dashboard, overcharging of the battery, and possible electrical system malfunctions.

2. What can cause OBDII code B1982 to trigger?

- Code B1982 is typically triggered due to a fault in the voltage regulator, a defective alternator, or issues with the electrical system's wiring.

3. How serious is OBDII code B1982 (Battery Voltage High)?

- Code B1982 should be addressed promptly as it can lead to overcharging of the battery, which may cause damage to the battery, electrical components, and even pose a fire hazard.

4. Can I still drive my vehicle with OBDII code B1982 active?

- It is not recommended to drive the vehicle with code B1982 active, as continued operation may lead to battery damage, electrical system issues, and potential safety hazards.

5. How do I diagnose and repair OBDII code B1982?

- Diagnosis typically involves checking the alternator output voltage, inspecting the voltage regulator, and testing the electrical system for any faults. Repair may involve replacing the alternator, voltage regulator, or repairing wiring issues.

6. What are some DIY tips for fixing OBDII code B1982?

- DIY enthusiasts can start by checking the alternator belt tension, ensuring proper battery connections, and inspecting the alternator for any visible signs of damage or wear.

7. Is it safe to reset the OBDII code B1982 without fixing the underlying issue?

- It is not recommended to reset the code without addressing the root cause, as the high voltage condition may persist and lead to further damage if left unresolved.

8. Can extreme weather conditions cause OBDII code B1982 to trigger?

- Yes, extreme heat or cold can affect the performance of the alternator and voltage regulator, potentially leading to a high voltage condition triggering code B1982.

9. Are there any common mistakes to avoid when dealing with OBDII code B1982?

- One common mistake is ignoring the warning signs and continuing to drive the vehicle, which can exacerbate the issue and lead to more extensive repairs.

10. How can I prevent OBDII code B1982 from reoccurring in the future?

- Regular maintenance of the charging system, including checking the alternator, voltage regulator, and battery connections, can help prevent code B1982 from reoccurring.