AutoCodes – Cadillac – P16F9 Cadillac

P16F9 Cadillac 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 Cadillac 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.

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Code Popularity 1,261

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
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Code P16F9 Cadillac 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 Cadillac - Control Module Shutdown Performance - AutoCodes.com — P16F9 Cadillac Code - Control Module Shutdown Performance

What does this mean?

What are the Possible Causes of the DTC P16F9 Cadillac?

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 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 P16F9 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 P16F9 Cadillac Code

1. What are the common symptoms of OBDII code P16F9 in a Cadillac?

- Common symptoms include engine stalling, rough idling, poor acceleration, and the vehicle going into limp mode.

2. What does the OBDII code P16F9 in a Cadillac indicate?

- The code P16F9 indicates a Control Module Shutdown Performance issue in the Cadillac's system.

3. What are the possible causes of OBDII code P16F9 in a Cadillac?

- Possible causes include a faulty control module, wiring issues, software glitches, or a communication problem within the vehicle's network.

4. How can I diagnose the OBDII code P16F9 in my Cadillac?

- Diagnosis usually involves using a diagnostic scanner to retrieve the code, checking for any associated codes, inspecting the control module and wiring, and performing necessary tests.

5. Can I drive my Cadillac with OBDII code P16F9?

- It is not recommended to drive the vehicle with this code present, as it may result in engine performance issues and potential safety hazards.

6. How can I repair OBDII code P16F9 in my Cadillac?

- Repair options may include replacing the faulty control module, repairing wiring issues, updating software, or addressing any communication problems within the vehicle's system.

7. Is it safe to reset the OBDII code P16F9 in my Cadillac using a diagnostic scanner?

- Resetting the code may temporarily clear the warning light, but it is crucial to address the underlying issue causing the code to prevent further problems.

8. Can a DIY enthusiast fix OBDII code P16F9 in a Cadillac?

- Depending on the exact cause, some DIY enthusiasts may be able to address simpler issues like checking wiring connections. However, complex repairs may require professional assistance.

9. How much does it cost to repair OBDII code P16F9 in a Cadillac?

- Repair costs can vary widely based on the exact cause of the issue, the needed parts, and labor. It's advisable to get a professional diagnosis to determine an accurate cost estimate.

10. Will OBDII code P16F9 in my Cadillac affect fuel efficiency?

- Yes, the code can affect fuel efficiency as it may lead to engine performance issues that can impact the vehicle's overall fuel consumption.