AutoCodesGMC – B1516 2018 GMC Sierra

B1516 2018 GMC Sierra Code - Battery Current Sensor

Quick Answer

The Battery Current Sensor is a 3-wire hall effect current sensor. Common causes include Faulty Battery Current Sensor, Battery Current Sensor harness is open or shorted, Battery Current Sensor 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
B1516 2018 GMC Sierra indicates Battery Current Sensor.
Common causes
Common causes include Faulty Battery Current Sensor, Battery Current Sensor harness is open or shorted, Battery Current Sensor 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 252
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 20, 2023
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Code B1516 2018 GMC Sierra Description

The Battery Current Sensor is a 3-wire hall effect current sensor. The Body Control Module (BCM) supplies 5 V and ground to the battery current sensor. The battery current sensor measures the amount of current flowing to or from the battery, and supplies a Pulse Width Modulation (PWM) signal to the BCM. The Diagnostic Trouble Code (DTC) will be set when the BCM detects a fault with the Battery Current Sensor.
OBDII Code B1516 2018 GMC Sierra - Battery Current Sensor - AutoCodes.com
B1516 2018 GMC Sierra Code - Battery Current Sensor

What are the Possible Causes of the DTC B1516 2018 GMC Sierra?

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

How to Fix the DTC B1516 2018 GMC Sierra?

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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1516 2018 GMC Sierra 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 B1516 2018 GMC Sierra code?

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Need Help with the Code?

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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 B1516 2018 GMC Sierra Code

1. What does the OBDII code B1516 mean on a 2018 GMC Sierra?

The B1516 code indicates an issue with the battery current sensor circuit, which monitors the battery's electrical flow and helps manage charge levels.

2. What are the symptoms of code B1516 in a 2018 GMC Sierra?

Symptoms may include a charging system warning light, erratic charging behavior, or difficulty maintaining battery charge.

3. What causes the B1516 code to appear in a 2018 GMC Sierra?

Common causes include a faulty battery current sensor, damaged wiring, corroded connectors, or a malfunctioning alternator.

4. Can a bad battery trigger the B1516 code on a 2018 GMC Sierra?

Yes, a failing or weak battery can cause irregular readings from the current sensor, potentially triggering the code.

5. How do you diagnose the B1516 code on a 2018 GMC Sierra?

Diagnosis involves checking the battery current sensor, inspecting wiring and connectors for damage or corrosion, and testing the battery and alternator for proper operation.

6. Is the battery current sensor on a 2018 GMC Sierra easy to replace?

Yes, the sensor is generally accessible near the battery or electrical distribution block and can be replaced with basic tools, but proper diagnosis is critical.

7. Can you drive a 2018 GMC Sierra with a B1516 code?

While the vehicle may still be drivable, ignoring the code can lead to charging system malfunctions or battery issues over time.

8. How much does it cost to repair the B1516 code on a 2018 GMC Sierra?

Repair costs vary but typically range from $100 to $300, depending on whether the sensor or wiring needs replacement.

9. Does clearing the B1516 code fix the problem on a 2018 GMC Sierra?

Clearing the code may temporarily remove the warning, but the underlying issue must be resolved to prevent the code from returning.

10. Can a software update fix the B1516 code on a 2018 GMC Sierra?

In rare cases, a software update to the vehicle’s control module might resolve communication errors, but hardware issues are more common causes.

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