AutoCodes – Buick – P16F9 Buick

P16F9 Buick Code - Control Module Shutdown Performance

Quick Answer

This diagnostic applies to internal microprocessor integrity conditions within the Hybrid Powertrain Control Module (HPCM). Common causes include Faulty Hybrid Powertrain Control Module (HPCM), Hybrid Powertrain Control Module (HPCM) harness is open or shorted, Hybrid Powertrain Control Module (HPCM) 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: P16F9 Buick indicates Control Module Shutdown Performance.
Common causes: Common causes include Faulty Hybrid Powertrain Control Module (HPCM), Hybrid Powertrain Control Module (HPCM) harness is open or shorted, Hybrid Powertrain Control Module (HPCM) 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 1,017

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 14, 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 P16F9 Buick Description

This diagnostic applies to internal microprocessor integrity conditions within the Hybrid Powertrain Control Module (HPCM). The HPCM and each Motor Control Module (MCM) utilize a programmable logic device (PLD) to perform certain input and output functions. The HPCM monitors the ability of the PLD to perform these functions.

OBDII Code P16F9 Buick - Control Module Shutdown Performance - AutoCodes.com — P16F9 Buick Code - Control Module Shutdown Performance

What does this mean?

What are the Possible Causes of the DTC P16F9 Buick?

Faulty Hybrid Powertrain Control Module (HPCM)
Hybrid Powertrain Control Module (HPCM) harness is open or shorted
Hybrid Powertrain Control Module (HPCM) circuit poor electrical connection

How to Fix the DTC P16F9 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 P16F9 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 P16F9 Buick code?

Need more information on how to fix the P16F9 Buick code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P16F9 Buick 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 P16F9 Buick Code

1. What does the OBDII code P16F9 mean on a Buick?

The P16F9 code indicates a "Control Module Shutdown Performance" issue, meaning the vehicle's control module is not shutting down or powering up as expected.

2. What are common symptoms of code P16F9 in a Buick?

Symptoms may include a failure to start, intermittent starting issues, electrical system malfunctions, or the check engine light being illuminated.

3. What causes the P16F9 code to appear in a Buick?

Common causes include a faulty control module, poor electrical connections, damaged wiring, or issues with the vehicleâ€™s battery or alternator.

4. Can a weak or failing battery cause code P16F9 in a Buick?

Yes, a weak or failing battery can cause insufficient power to the control module, triggering the P16F9 code.

5. How do I diagnose the P16F9 code on my Buick?

Start by checking the battery and alternator for proper function, inspect wiring and connectors for damage, and use a scan tool to monitor the control module's performance.

6. Is it safe to drive my Buick with the P16F9 code?

Driving with this code is not recommended, as it may lead to unexpected shutdowns or electrical malfunctions that could cause safety concerns.

7. How can I fix the P16F9 code on my Buick?

Repairs may include replacing or reprogramming the control module, repairing damaged wiring, cleaning or securing electrical connections, or replacing a weak battery.

8. What tools are needed to troubleshoot the P16F9 code?

Youâ€™ll need a diagnostic scan tool, a multimeter for checking electrical connections, and potentially a battery tester.

9. Can the P16F9 code clear itself after repairs?

The code may clear itself after fixing the underlying issue, but itâ€™s recommended to use a scan tool to manually clear the code and ensure it doesnâ€™t return.

10. How much does it cost to repair the P16F9 code on a Buick?

Repair costs vary depending on the cause, ranging from $50 for minor electrical fixes to $500 or more if the control module needs replacement or reprogramming.