AutoCodes – Chevrolet – P27A9 2016 Chevrolet Silverado

P27A9 2016 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 2016 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 260

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 22, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P27A9 2016 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 2016 Chevrolet Silverado - Transmission Control Solenoid Valve 3 Calibration Incorrect - AutoCodes.com — P27A9 2016 Chevrolet Silverado Code - Transmission Control Solenoid Valve 3 Calibration Incorrect

What does this mean?

What are the Possible Causes of the DTC P27A9 2016 Chevrolet Silverado?

Solenoid Valve Characterization Reprogramming

How to Fix the DTC P27A9 2016 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 2016 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 2016 Chevrolet Silverado code?

Need more information on how to fix the P27A9 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P27A9 2016 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 2016 Chevrolet Silverado Code

1. What does OBDII code P27A9 on a 2016 Chevrolet Silverado indicate?

- This code indicates that the Transmission Control Solenoid Valve 3 Calibration is Incorrect.

2. What are the common symptoms of OBDII code P27A9 in a 2016 Chevrolet Silverado?

- Common symptoms may include harsh shifting, transmission slippage, decreased fuel efficiency, and illuminated check engine light.

3. What are the possible causes of OBDII code P27A9 in a 2016 Chevrolet Silverado?

- The code P27A9 can be triggered by issues such as a faulty transmission control solenoid valve, wiring problems, low transmission fluid, or internal transmission faults.

4. How serious is OBDII code P27A9 on a 2016 Chevrolet Silverado?

- Ignoring this code can lead to further transmission damage and potential safety hazards. It is recommended to address the issue promptly.

5. How can I diagnose OBDII code P27A9 in my 2016 Chevrolet Silverado?

- Diagnosis typically involves scanning the vehicle's onboard computer with an OBDII scanner to retrieve the specific fault code. Further testing may be required to pinpoint the exact cause.

6. Can I still drive my 2016 Chevrolet Silverado with OBDII code P27A9?

- It is not recommended to drive the vehicle with this code present, as it can lead to transmission issues. It's best to have the problem diagnosed and repaired as soon as possible.

7. How can I repair OBDII code P27A9 in a 2016 Chevrolet Silverado?

- Repair may involve replacing the faulty transmission control solenoid valve, addressing wiring issues, checking and topping up transmission fluid, or seeking professional assistance for internal transmission repairs.

8. Can I reset OBDII code P27A9 in a 2016 Chevrolet Silverado without fixing the underlying issue?

- While you can clear the code with an OBDII scanner, it is crucial to address the root cause of the problem to prevent further damage to the transmission system.

9. Are there any DIY tips for troubleshooting OBDII code P27A9 in a 2016 Chevrolet Silverado?

- DIY tips may include checking for loose or damaged wiring connections, ensuring proper transmission fluid levels, and visually inspecting the transmission control solenoid valve for any visible issues.

10. How much does it typically cost to repair OBDII code P27A9 in a 2016 Chevrolet Silverado?

- The cost of repair can vary depending on the exact cause of the code and whether you choose to DIY or seek professional help. Costs may include parts, labor, and diagnostic fees.