AutoCodes – Buick – P27AD Buick

P27AD Buick Code - Transmission Control Solenoid Valve 7 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: P27AD Buick indicates Transmission Control Solenoid Valve 7 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 415

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 P27AD Buick 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 P27AD Buick - Transmission Control Solenoid Valve 7 Calibration Incorrect - AutoCodes.com — P27AD Buick Code - Transmission Control Solenoid Valve 7 Calibration Incorrect

What does this mean?

What are the Possible Causes of the DTC P27AD Buick?

Solenoid Valve Characterization Reprogramming

How to Fix the DTC P27AD Buick?

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 P27AD Buick 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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Need Help with the Code?

Get the P27AD Buick 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 P27AD Buick Code

1. What are the common symptoms of OBDII code P27AD in a Buick related to Transmission Control Solenoid Valve 7 Calibration Incorrect?

- Common symptoms include harsh shifting, erratic transmission behavior, and potential transmission slipping.

2. What can cause OBDII code P27AD to trigger in a Buick?

- This code is typically triggered due to a malfunction or incorrect calibration of Transmission Control Solenoid Valve 7.

3. How serious is OBDII code P27AD in a Buick?

- Ignoring this code can lead to further damage to the transmission system, potentially resulting in costly repairs.

4. Can driving with OBDII code P27AD in a Buick cause further damage?

- Continuing to drive with this code can exacerbate transmission issues and may result in more severe damage over time.

5. How can I diagnose OBDII code P27AD in my Buick?

- A professional diagnostic scan tool is required to read the code and determine the specific issue with Transmission Control Solenoid Valve 7.

6. Is it possible to repair OBDII code P27AD in a Buick without professional help?

- While some basic maintenance tasks can be performed at home, diagnosing and repairing this specific code often requires professional expertise.

7. What are some repair tips for addressing OBDII code P27AD in a Buick?

- It's recommended to consult a qualified mechanic for proper diagnosis and repair, which may involve recalibrating or replacing the affected solenoid valve.

8. Can OBDII code P27AD in a Buick be a recurring issue?

- If the underlying cause of the code is not properly addressed, it is possible for the issue to recur even after initial repairs.

9. Are there any preventive measures to avoid OBDII code P27AD in a Buick?

- Regular maintenance, such as fluid checks and scheduled transmission servicing, can help prevent issues that may trigger this code.

10. How much does it typically cost to repair OBDII code P27AD in a Buick?

- The cost of repairing this code can vary depending on the extent of the damage and the specific repairs needed, but it often involves a moderate to high expense.