AutoCodes – Buick – B0981 Buick

B0981 Buick Code - Transmission Winter Mode Switch Short to Ground

Quick Answer

The Powertrain Control Module (PCM) monitors the Transmission Winter Mode Switch. Common causes include Faulty Transmission Winter Mode Switch, Transmission Winter Mode Switch harness is open or shorted, Transmission Winter Mode Switch 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: B0981 Buick indicates Transmission Winter Mode Switch Short to Ground.
Common causes: Common causes include Faulty Transmission Winter Mode Switch, Transmission Winter Mode Switch harness is open or shorted, Transmission Winter Mode Switch 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 839

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 Mar 11, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0981 Buick Description

The Powertrain Control Module (PCM) monitors the Transmission Winter Mode Switch. The PCM sets the OBDII code when the Transmission Winter Mode Switch is not to factory specifications.

OBDII Code B0981 Buick - Transmission Winter Mode Switch Short to Ground - AutoCodes.com — B0981 Buick Code - Transmission Winter Mode Switch Short to Ground

What does this mean?

What are the Possible Causes of the DTC B0981 Buick?

Faulty Transmission Winter Mode Switch
Transmission Winter Mode Switch harness is open or shorted
Transmission Winter Mode Switch circuit poor electrical connection

How to Fix the DTC B0981 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 B0981 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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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 B0981 Buick Code

1. What are the common symptoms of OBDII code B0981 in a Buick related to the Transmission Winter Mode Switch Short to Ground?

- Common symptoms may include difficulty shifting gears, erratic transmission behavior, and the transmission staying in winter mode.

2. What is the most likely cause of the OBDII code B0981 in a Buick indicating a Transmission Winter Mode Switch Short to Ground?

- The most likely cause is a short circuit in the wiring or a malfunction in the winter mode switch itself.

3. How can I diagnose the Transmission Winter Mode Switch Short to Ground issue in my Buick?

- You can use a multimeter to test the wiring and switch for continuity and resistance. Additionally, visually inspect the wiring and connectors for any signs of damage.

4. Can I continue driving my Buick with the B0981 code indicating a Transmission Winter Mode Switch Short to Ground?

- It is not recommended to continue driving the vehicle with this issue as it can lead to further damage to the transmission system.

5. Is it possible to repair the Transmission Winter Mode Switch Short to Ground problem in my Buick without professional help?

- While some DIY enthusiasts may attempt to fix this issue, it is recommended to seek professional help to ensure proper diagnosis and repair.

6. Will resetting the OBDII code B0981 in my Buick make the issue go away permanently?

- Simply resetting the code will not fix the underlying problem causing the Transmission Winter Mode Switch Short to Ground. Proper diagnosis and repair are necessary.

7. Are there any preventive measures to avoid encountering the B0981 code in a Buick?

- Regularly inspecting the transmission system, including the winter mode switch and related wiring, can help detect potential issues early and prevent the code from appearing.

8. How much can I expect to pay for repairing the B0981 code related to the Transmission Winter Mode Switch Short to Ground in a Buick?

- The cost of repair can vary depending on the extent of the damage and the labor rates in your area. It's recommended to obtain quotes from reputable mechanics.

9. Can extreme weather conditions contribute to triggering the B0981 code in a Buick?

- Extreme cold weather can potentially exacerbate existing issues with the winter mode switch and wiring, leading to the Transmission Winter Mode Switch Short to Ground code.

10. Is the OBDII code B0981 specific to Buick vehicles, or can it occur in other car makes and models?

- While the specific code may vary, similar issues related to the transmission winter mode switch short to ground can occur in other vehicle makes and models.