AutoCodes – Cadillac – P16F6 Cadillac

P16F6 Cadillac Code - Control Module Range State Command

Quick Answer

This diagnostic applies to internal microprocessor integrity conditions within the hybrid powertrain control module. Common causes include Faulty Drive Motor Generator Power Inverter Module, Drive Motor Generator Power Inverter Module harness is open or shorted, Drive Motor Generator Power Inverter 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: P16F6 Cadillac indicates Control Module Range State Command.
Common causes: Common causes include Faulty Drive Motor Generator Power Inverter Module, Drive Motor Generator Power Inverter Module harness is open or shorted, Drive Motor Generator Power Inverter 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 996

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
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Code P16F6 Cadillac Description

This diagnostic applies to internal microprocessor integrity conditions within the hybrid powertrain control module. The hybrid powertrain control module is internal to the drive motor generator power inverter module, and is not serviced separately. The hybrid powertrain control module monitors its ability to read and write to the memory. The hybrid powertrain control module processor monitors the data to verify that the commanded range state calculation is correct.

OBDII Code P16F6 Cadillac - Control Module Range State Command - AutoCodes.com — P16F6 Cadillac Code - Control Module Range State Command

What does this mean?

What are the Possible Causes of the DTC P16F6 Cadillac?

Faulty Drive Motor Generator Power Inverter Module
Drive Motor Generator Power Inverter Module harness is open or shorted
Drive Motor Generator Power Inverter Module circuit poor electrical connection

How to Fix the DTC P16F6 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 P16F6 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 P16F6 Cadillac Code

1. What does the OBDII code P16F6 mean on a Cadillac?

The P16F6 code indicates an issue with the Control Module Range State Command, which relates to the transmission or engine control system's ability to communicate and manage gear range states properly.

2. What are the common symptoms of code P16F6 on a Cadillac?

Symptoms may include erratic shifting, transmission stuck in one gear, reduced power mode, or an illuminated check engine light.

3. What causes the P16F6 code on a Cadillac?

Common causes include a faulty transmission control module (TCM), wiring issues, poor connections, or internal transmission problems affecting range state commands.

4. How can code P16F6 affect vehicle performance?

This code can lead to improper gear operation, reduced fuel efficiency, and difficulties maintaining speed or acceleration.

5. Can I drive my Cadillac with the P16F6 code active?

Driving with this code active is not recommended, as it can cause further damage to the transmission or engine and may leave you stranded.

6. How is code P16F6 diagnosed on a Cadillac?

Technicians use a diagnostic scanner to read the code, inspect wiring and connectors, and test the transmission control module and related components.

7. What repairs can fix code P16F6 on a Cadillac?

Repairs may include replacing the transmission control module, repairing damaged wiring, cleaning connectors, or addressing internal transmission issues.

8. Can a software update fix code P16F6 on a Cadillac?

In some cases, a software update for the transmission or engine control module can resolve the issue if itâ€™s related to programming errors.

9. How much does it cost to repair code P16F6 on a Cadillac?

Repair costs vary widely, ranging from $100 for minor wiring fixes to over $1,000 if the transmission control module or internal transmission components need replacement.

10. How can I prevent code P16F6 from occurring on my Cadillac?

Regular maintenance, prompt repairs for transmission issues, and avoiding harsh driving conditions can help prevent this code from appearing.