AutoCodes – Buick – P16DC Buick

P16DC Buick Code - Battery Module Monitor Timer Performance

Quick Answer

The vehicle control module monitors the system voltage, current, and internal temperature to verify they are within the normal operating range. Common causes include Faulty Battery Monitor Module, Battery Monitor Module harness is open or shorted, Battery Monitor Module 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
P16DC Buick indicates Battery Module Monitor Timer Performance.
Common causes
Common causes include Faulty Battery Monitor Module, Battery Monitor Module harness is open or shorted, Battery Monitor Module 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 6,196
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jan 12, 2020
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Code P16DC Buick Description

The vehicle control module monitors the system voltage, current, and internal temperature to verify they are within the normal operating range. It also monitors ROM or RAM memory faults, and performs other internal diagnostics.
OBDII Code P16DC Buick - Battery Module Monitor Timer Performance - AutoCodes.com
P16DC Buick Code - Battery Module Monitor Timer Performance

What are the Possible Causes of the DTC P16DC Buick?

  • Faulty Battery Monitor Module
  • Battery Monitor Module harness is open or shorted
  • Battery Monitor Module circuit poor electrical connection

How to Fix the DTC P16DC Buick?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P16DC Buick 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 P16DC Buick 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 P16DC Buick Code

1. What does the OBDII code P16DC mean on a Buick?

The P16DC code indicates a Battery Module Monitor Timer Performance issue, meaning the vehicle's battery module control system has detected a problem with its internal timer or communication.

2. What are the symptoms of a P16DC code on a Buick?

Common symptoms include a check engine light, reduced hybrid or electric system performance (if applicable), or irregular battery charging behavior.

3. What causes the P16DC code to appear on a Buick?

Causes may include a malfunctioning battery control module, wiring issues, a software glitch, or a faulty timer within the battery monitoring system.

4. Can a P16DC code cause drivability issues?

Yes, in some cases, the code may lead to reduced performance or efficiency in vehicles with hybrid or electric systems, though it might not always affect drivability.

5. How is the P16DC code diagnosed on a Buick?

A technician will use a scan tool to confirm the code, check live data, inspect the battery control module, test wiring and connectors, and verify proper system functionality.

6. Can the P16DC code be triggered by a weak battery?

Yes, a weak or failing battery can sometimes cause this code, as it may disrupt the battery module's ability to monitor performance accurately.

7. What is the most common fix for the P16DC code on a Buick?

The most common fix is reprogramming or replacing the battery control module, though wiring repairs or a battery replacement may also be necessary.

8. Is it safe to drive with a P16DC code on a Buick?

While the vehicle may still be drivable, ignoring this code could lead to further damage or reduced system performance, especially in hybrid or electric models.

9. How much does it cost to fix a P16DC code on a Buick?

Repair costs vary but may range from $150 to $800, depending on whether the issue requires reprogramming, module replacement, or additional repairs.

10. Can a software update fix the P16DC code on a Buick?

In some cases, a software update for the battery control module can resolve the issue if the problem is related to a programming error.

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