AutoCodes – Chevrolet – P27A9 2014 Chevrolet Silverado

P27A9 2014 Chevrolet Silverado Code - Transmission Control Solenoid Valve 3 Calibration Incorrect

Quick Answer

The Transmission Control Solenoid Valve 1, 2, 3, 4, 5, 6, 7 have a unique current versus oil pressure characteristic that is used to properly upshift or downshift the transmission. Common causes include Solenoid Valve Characterization Reprogramming. 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: P27A9 2014 Chevrolet Silverado indicates Transmission Control Solenoid Valve 3 Calibration Incorrect.
Common causes: Common causes include Solenoid Valve Characterization Reprogramming.
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 202

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 Sep 22, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P27A9 2014 Chevrolet Silverado Description

The Transmission Control Solenoid Valve 1, 2, 3, 4, 5, 6, 7 have a unique current versus oil pressure characteristic that is used to properly upshift or downshift the transmission. The data for each solenoid valve is programmed into the Transmission Control Module (TCM). The Diagnostic Trouble Code (DTC) will be set when the Transmission Control Solenoid Valve Calibration Data has not been programmed.

OBDII Code P27A9 2014 Chevrolet Silverado - Transmission Control Solenoid Valve 3 Calibration Incorrect - AutoCodes.com — P27A9 2014 Chevrolet Silverado Code - Transmission Control Solenoid Valve 3 Calibration Incorrect

What does this mean?

What are the Possible Causes of the DTC P27A9 2014 Chevrolet Silverado?

Solenoid Valve Characterization Reprogramming

How to Fix the DTC P27A9 2014 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 P27A9 2014 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 P27A9 2014 Chevrolet Silverado code?

Need more information on how to fix the P27A9 2014 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P27A9 2014 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 P27A9 2014 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P27A9 in a 2014 Chevrolet Silverado?

- Common symptoms include rough shifting, transmission slipping, illuminated Check Engine light, and reduced fuel efficiency.

2. What does OBDII code P27A9 indicate in a 2014 Chevrolet Silverado?

- This code indicates that the Transmission Control Solenoid Valve 3 calibration is incorrect.

3. What are the possible causes of OBDII code P27A9 in a 2014 Chevrolet Silverado?

- Possible causes include a faulty Transmission Control Module (TCM), damaged wiring or connectors, or a malfunctioning Transmission Control Solenoid Valve 3.

4. How can I diagnose OBDII code P27A9 in my 2014 Chevrolet Silverado?

- Diagnosing this code typically involves using a diagnostic scanner to retrieve the code and then inspecting the transmission control components for any visible damage or issues.

5. Can I continue driving my 2014 Chevrolet Silverado with OBDII code P27A9?

- It is not recommended to continue driving with this code present, as it can lead to further damage to the transmission and potentially unsafe driving conditions.

6. How can I repair OBDII code P27A9 in my 2014 Chevrolet Silverado?

- Repairing this code may involve recalibrating the Transmission Control Solenoid Valve 3, replacing the solenoid valve, repairing any damaged wiring, or updating the TCM software.

7. Is it possible to reset OBDII code P27A9 in a 2014 Chevrolet Silverado without fixing the underlying issue?

- While you can clear the code with a diagnostic scanner, it is crucial to address the underlying problem to prevent the code from reoccurring.

8. How much does it typically cost to repair OBDII code P27A9 in a 2014 Chevrolet Silverado?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from $200 to $600 for parts and labor.

9. Can a DIY enthusiast fix OBDII code P27A9 in a 2014 Chevrolet Silverado?

- Depending on your skill level and access to tools, some DIY enthusiasts may be able to address this code by following repair guides or tutorials. However, it is recommended to consult a professional for complex transmission issues.

10. How long does it usually take to repair OBDII code P27A9 in a 2014 Chevrolet Silverado?

- The repair time can vary based on the specific repair needed, but it typically takes a few hours to a full day for a professional technician to diagnose and fix the issue.