AutoCodes – Chevrolet – P15F9 2018 Chevrolet Silverado

P15F9 2018 Chevrolet Silverado Code - Hybrid/EV System Engine Speed Control Intervention Request Type Signal Message Counter Incorrect

Quick Answer

The Hybrid Powertrain Control Module is constantly sending serial data messages to the Engine Control Module (ECM) regarding the operating state of the powertrain propulsion system. Common causes include Check for Hybrid Codes. 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: P15F9 2018 Chevrolet Silverado indicates Hybrid/EV System Engine Speed Control Intervention Request Type Signal Message Counter Incorrect.
Common causes: Common causes include Check for Hybrid Codes.
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 275

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Sep 28, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P15F9 2018 Chevrolet Silverado Description

The Hybrid Powertrain Control Module is constantly sending serial data messages to the Engine Control Module (ECM) regarding the operating state of the powertrain propulsion system. These messages are sent in a continuously repeating series of rolling counts with associated password protect samples. Each count/sample is assigned a value. The ECM uses the values, during a propulsion system mode shift, to determine when and at what RPM to idle the internal combustion engine. When the ECM determines that too many of the counts/samples contain an error value, the ECM sets DTC P15F9.

OBDII Code P15F9 2018 Chevrolet Silverado - Hybrid/EV System Engine Speed Control Intervention Request Type Signal Message Counter Incorrect - AutoCodes.com — P15F9 2018 Chevrolet Silverado Code - Hybrid/EV System Engine Speed Control Intervention Request Type Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P15F9 2018 Chevrolet Silverado?

Check for Hybrid Codes

How to Fix the DTC P15F9 2018 Chevrolet Silverado?

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 P15F9 2018 Chevrolet Silverado 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 P15F9 2018 Chevrolet Silverado code?

Need more information on how to fix the P15F9 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P15F9 2018 Chevrolet Silverado 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 P15F9 2018 Chevrolet Silverado Code

1. What are common symptoms of OBDII code P15F9 in a 2018 Chevrolet Silverado Hybrid/EV System?

- Common symptoms include poor engine performance, reduced fuel efficiency, and the illumination of the check engine light.

2. What causes the OBDII code P15F9 to trigger in a 2018 Chevrolet Silverado Hybrid/EV System?

- This code is typically triggered by a fault in the engine speed control system, such as a faulty sensor, wiring issue, or software glitch.

3. How can I diagnose the OBDII code P15F9 in my 2018 Chevrolet Silverado Hybrid/EV System?

- Diagnosis involves using an OBDII scanner to retrieve the code, inspecting the engine speed control components, and performing electrical tests to pinpoint the issue.

4. What are the potential risks of driving with the OBDII code P15F9 in a 2018 Chevrolet Silverado Hybrid/EV System?

- Continuing to drive with this code may lead to further damage to the engine or hybrid/EV system components, potentially resulting in more costly repairs.

5. Can I repair the OBDII code P15F9 in my 2018 Chevrolet Silverado Hybrid/EV System myself?

- While simple fixes like checking and cleaning connections may help, it's recommended to have a professional technician diagnose and repair this code to ensure proper resolution.

6. How much does it typically cost to repair the OBDII code P15F9 in a 2018 Chevrolet Silverado Hybrid/EV System?

- The cost of repair can vary based on the exact cause of the code, but it may range from a few hundred to over a thousand dollars, including parts and labor.

7. Are there any recalls or service bulletins related to the OBDII code P15F9 in the 2018 Chevrolet Silverado Hybrid/EV System?

- It's advisable to check with a Chevrolet dealership or online resources for any relevant recalls or service bulletins that may address this specific OBDII code.

8. How urgent is it to address the OBDII code P15F9 in a 2018 Chevrolet Silverado Hybrid/EV System?

- While the vehicle may still be operable with this code, it's recommended to address it promptly to prevent potential drivability issues and further damage to the vehicle.

9. Can the OBDII code P15F9 in a 2018 Chevrolet Silverado Hybrid/EV System cause the vehicle to stall or lose power?

- In some cases, this code can lead to engine speed control issues that may result in stalling or loss of power, especially during acceleration or constant speed driving.

10. Is there a way to prevent the OBDII code P15F9 from reoccurring in a 2018 Chevrolet Silverado Hybrid/EV System?

- Regular maintenance, such as keeping the engine speed control components clean and in good condition, can help reduce the likelihood of this code reoccurring.