AutoCodes – Cadillac – B1983 Cadillac

B1983 Cadillac Code - Battery Voltage Low

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 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: B1983 Cadillac indicates Battery Voltage Low.
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: 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 Popularity 2,084

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 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 B1983 Cadillac 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) B1983 will set when the voltage is less than 9 volts for 4 consecutive monitoring cycles (1200 milliseconds). DTC B1983 will clear when the battery voltage is greater than 9.5 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 B1983 Cadillac - Battery Voltage Low - AutoCodes.com — B1983 Cadillac Code - Battery Voltage Low

What does this mean?

What are the Possible Causes of the DTC B1983 Cadillac?

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 B1983 Cadillac?

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 B1983 BATTERY VOLTAGE TOO LOW BCM
DTC B1983 BATTERY VOLTAGE TOO LOW RADIO

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1983 Cadillac 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 B1983 Cadillac Code

1. What does the OBDII code B1983 mean on a Cadillac?

The B1983 code indicates that the vehicle's control module has detected low battery voltage in the electrical system.

2. What are the common symptoms of the B1983 code in a Cadillac?

Symptoms may include dim or flickering interior and exterior lights, difficulty starting the vehicle, or erratic electrical system behavior.

3. What causes the B1983 code to appear?

Common causes include a weak or failing battery, a faulty alternator, poor electrical connections, or corroded battery terminals.

4. Can driving with the B1983 code damage my Cadillac?

Driving with this code may cause further strain on the electrical system and lead to stalling or other issues if the battery or alternator completely fails.

5. How do I diagnose the cause of the B1983 code?

Start by testing the battery voltage with a multimeter, inspecting the alternator for proper output, and checking for corroded or loose connections in the battery terminals and wiring.

6. How do I fix the B1983 code in a Cadillac?

Repairs may include replacing a failing battery, repairing or replacing the alternator, cleaning and tightening battery terminals, or addressing wiring issues.

7. How much does it cost to fix the B1983 code on a Cadillac?

Costs vary depending on the issue; battery replacement typically costs $100â€“$300, while alternator repairs or replacements can range from $300â€“$800.

8. Can a bad alternator trigger the B1983 code?

Yes, a failing alternator that is not properly charging the battery can cause low voltage and trigger the B1983 code.

9. Will clearing the B1983 code solve the problem?

Clearing the code without addressing the underlying issue will not fix the problem, and the code is likely to return.

10. How often should I check my Cadillacâ€™s battery to avoid the B1983 code?

Itâ€™s a good idea to test your battery and charging system at least once a year, especially before extreme weather seasons, to prevent voltage-related issues.