AutoCodes – Buick – P0723 Buick

P0723 Buick Code - Transmission Output Speed Sensor Circuit Intermittent

Quick Answer

The Output Speed Sensor (OSS) is a hall-effect type sensor. Common causes include Faulty Transmission Output Speed Sensor (OSS), Transmission Output Speed Sensor harness is open or shorted, Transmission Output Speed Sensor 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: P0723 Buick indicates Transmission Output Speed Sensor Circuit Intermittent.
Common causes: Common causes include Faulty Transmission Output Speed Sensor (OSS), Transmission Output Speed Sensor harness is open or shorted, Transmission Output Speed Sensor 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 1,023

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 Jul 29, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0723 Buick Description

The Output Speed Sensor (OSS) is a hall-effect type sensor. The OSS mounts to the automatic transmission case assembly and connects to the control solenoid valve assembly through a 2-wire harness and connector. The sensor faces the park gear teeth. The sensor receives battery voltage on the OSS supply voltage circuit from the Transmission Control Module (TCM). As the output shaft rotates, the sensor produces a signal frequency based on the park gear teeth. This signal is transmitted through the OSS signal circuit to the TCM. The TCM uses the OSS signal to determine line pressure, transmission shift patterns, vehicle speed, and gear ratio.
The Diagnostic Trouble Code (DTC) will be set when the TCM detects the transmission output speed dropped is greater than 650 RPM for 1.5 s.

OBDII Code P0723 Buick - Transmission Output Speed Sensor Circuit Intermittent - AutoCodes.com — P0723 Buick Code - Transmission Output Speed Sensor Circuit Intermittent

What does this mean?

What are the Possible Causes of the DTC P0723 Buick?

Faulty Transmission Output Speed Sensor (OSS)
Transmission Output Speed Sensor harness is open or shorted
Transmission Output Speed Sensor circuit poor electrical connection
Faulty Transmission Control Module (TCM)

How to Fix the DTC P0723 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 P0723 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 P0723 Buick Code

1. What are common symptoms of OBDII code P0723 in a Buick related to the Transmission Output Speed Sensor Circuit Intermittent?

- Common symptoms include erratic shifting, stalling, poor acceleration, and illuminated transmission warning lights on the dashboard.

2. What can cause the OBDII code P0723 to appear in a Buick?

- The code P0723 in a Buick is typically caused by a faulty transmission output speed sensor, damaged wiring or connectors, or issues with the transmission control module.

3. How can I diagnose the Transmission Output Speed Sensor Circuit Intermittent issue in my Buick?

- To diagnose this issue, you can use an OBDII scanner to read the code, visually inspect the wiring and connectors for any damage, and test the output speed sensor for proper functionality.

4. What are some tips for repairing the Transmission Output Speed Sensor Circuit Intermittent issue in a Buick?

- Repair options include replacing the faulty output speed sensor, repairing any damaged wiring or connectors, and resetting the trouble code using an OBDII scanner.

5. Can driving with the OBDII code P0723 in a Buick lead to further damage?

- Continuing to drive with this code may result in poor performance, potential transmission damage, and reduced fuel efficiency. It is advisable to address the issue promptly.

6. Is it safe to reset the OBDII code P0723 in a Buick without fixing the underlying issue?

- While resetting the code may temporarily turn off the warning light, it is not recommended as the underlying problem still exists and may lead to further complications.

7. How much does it typically cost to repair the Transmission Output Speed Sensor Circuit Intermittent issue in a Buick?

- The cost of repairing this issue can vary depending on the exact cause, but it may range from $100 to $300 for parts and labor.

8. Can a DIY enthusiast repair the OBDII code P0723 issue in a Buick?

- Depending on your skill level and access to tools, a DIY enthusiast may be able to replace the output speed sensor or repair wiring themselves. However, professional diagnosis is recommended.

9. Are there any preventative measures to avoid the OBDII code P0723 in a Buick?

- Regular maintenance checks, such as inspecting the transmission system and sensors, can help prevent issues like the P0723 code from occurring in your Buick.

10. How long does it take to repair the Transmission Output Speed Sensor Circuit Intermittent issue in a Buick?

- The repair time can vary based on the exact cause and complexity of the issue, but a skilled mechanic can usually complete the repair within a few hours to a day.