AutoCodes – Cadillac – P16DE Cadillac

P16DE Cadillac Code - Battery Monitor Internal Temperature Circuit Low Voltage

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: P16DE Cadillac indicates Battery Monitor Internal Temperature Circuit Low Voltage.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,009

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 Jan 12, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P16DE Cadillac 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 P16DE Cadillac - Battery Monitor Internal Temperature Circuit Low Voltage - AutoCodes.com — P16DE Cadillac Code - Battery Monitor Internal Temperature Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P16DE Cadillac?

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

How to Fix the DTC P16DE 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P16DE 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.

Need more information about the P16DE Cadillac code?

Need more information on how to fix the P16DE Cadillac code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P16DE Cadillac code diagnosed by a professional: Find a repair shop in your area

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 P16DE Cadillac Code

1. What does the OBDII code P16DE mean for a Cadillac?

The P16DE code indicates a problem with the Battery Monitor Internal Temperature Circuit, specifically low voltage detected in the system.

2. What are common symptoms of the P16DE code in a Cadillac?

Symptoms may include the check engine light turning on, issues with battery charging performance, or erratic voltage readings.

3. What causes the P16DE code to appear on a Cadillac?

Possible causes include a faulty battery monitor sensor, damaged wiring or connectors in the circuit, or a failing battery.

4. Can a weak battery trigger the P16DE code?

Yes, a weak or failing battery can cause low voltage in the battery monitor circuit, triggering the P16DE code.

5. How is the P16DE code diagnosed?

Technicians typically inspect the battery monitor sensor, wiring, and connections for damage or corrosion, and may check the battery's health and voltage output.

6. Can I drive my Cadillac with the P16DE code active?

Driving with this code may be possible, but itâ€™s not recommended as it could lead to charging system issues or further damage if left unresolved.

7. How do you fix the P16DE code on a Cadillac?

Fixes may include replacing the battery monitor sensor, repairing damaged wiring or connectors, or replacing the battery if itâ€™s faulty.

8. How much does it cost to repair the P16DE code on a Cadillac?

Repair costs vary depending on the issue, but replacing a battery monitor sensor or fixing wiring typically ranges from $100 to $300.

9. Can a software update resolve the P16DE code?

In some cases, a software update for the vehicleâ€™s control module may help if the issue is related to erroneous readings or programming glitches.

10. How can I prevent the P16DE code from recurring in my Cadillac?

Regular battery maintenance, checking for damaged wiring, and ensuring the battery monitor sensor is functioning properly can help prevent this code from recurring.