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P0723 2014 GMC Sierra Code - Transmission Output Speed Sensor Circuit Intermittent

Quick Answer

The P0723 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates an issue with the transmission output speed sensor circuit being intermittent. Common causes include Faulty transmission output speed sensor, Damaged wiring or connectors, Malfunctioning transmission control module (TCM). 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 2014 GMC Sierra indicates Transmission Output Speed Sensor Circuit Intermittent.
Common causes
Common causes include Faulty transmission output speed sensor, Damaged wiring or connectors, Malfunctioning transmission control module (TCM).
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P0723 2014 GMC Sierra Description

The P0723 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates an issue with the transmission output speed sensor circuit being intermittent. The transmission output speed sensor is responsible for monitoring the speed of the output shaft of the transmission. This information is crucial for the vehicle's onboard computer to determine the proper shifting strategy and ensure smooth operation of the transmission.

OBDII Code P0723 2014 GMC Sierra - Transmission Output Speed Sensor Circuit Intermittent
P0723 2014 GMC Sierra Code - Transmission Output Speed Sensor Circuit Intermittent

Common Causes of P0723 2014 GMC Sierra

  1. Faulty transmission output speed sensor
  2. Damaged wiring or connectors
  3. Malfunctioning transmission control module (TCM)
  4. Issues with the vehicle's computer system
  5. Corrosion or contamination in the sensor circuit

Symptoms of P0723 2014 GMC Sierra

  1. Erratic shifting behavior
  2. Hesitation during acceleration
  3. Transmission slipping
  4. Illumination of the Check Engine Light
  5. Harsh or delayed shifting

How to Fix P0723 2014 GMC Sierra

  1. Begin by diagnosing the specific cause of the intermittent output speed sensor circuit, using a scan tool to retrieve the trouble codes and performing a visual inspection of the sensor, wiring, and connectors.
  2. Replace the faulty transmission output speed sensor if it is determined to be the root cause of the issue.
  3. Inspect and repair any damaged wiring or connectors in the sensor circuit.
  4. Test the transmission control module (TCM) and vehicle's computer system for proper operation, replacing or reprogramming as necessary.
  5. Clear the trouble codes from the vehicle's computer and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P0723 2014 GMC Sierra

The typical repair costs for addressing a P0723 code on a 2014 GMC Sierra can vary depending on the specific cause of the issue. In general, the cost of replacing a transmission output speed sensor can range from $100 to $300, including parts and labor. Additional costs may apply if there are wiring or connector issues that need to be addressed. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.

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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 2014 GMC Sierra Code

1. What does the OBDII code P0723 mean on a 2014 GMC Sierra?

P0723 indicates an intermittent issue in the transmission output speed sensor circuit, which can affect the vehicle's ability to properly monitor transmission operation.

2. What are common symptoms of code P0723 on a 2014 GMC Sierra?

Symptoms may include erratic transmission shifting, a loss of cruise control, poor acceleration, or the transmission going into "limp mode."

3. What causes the P0723 code to appear on a 2014 GMC Sierra?

Common causes include a faulty transmission output speed sensor, damaged wiring or connectors, electrical interference, or issues with the vehicle's transmission control module (TCM).

4. Can a faulty transmission output speed sensor trigger the P0723 code?

Yes, a malfunctioning or intermittently failing transmission output speed sensor is one of the primary reasons for this code.

5. How do I diagnose code P0723 on a 2014 GMC Sierra?

Start by inspecting the wiring and connectors related to the transmission output speed sensor for damage or corrosion. Then, test the sensor itself for proper operation using a multimeter.

6. Can driving with code P0723 damage my 2014 GMC Sierra?

Driving with this code can lead to erratic transmission behavior, which may strain the transmission and other components over time if not addressed.

7. How do I fix the P0723 code on a 2014 GMC Sierra?

Repairs typically involve replacing the transmission output speed sensor, repairing damaged wiring, cleaning corroded connectors, or addressing issues with the transmission control module.

8. Is replacing the transmission output speed sensor expensive?

The cost varies based on labor rates and part prices, but replacing the sensor is generally a moderate expense compared to major transmission repairs.

9. Can a transmission fluid issue cause the P0723 code?

Low or contaminated transmission fluid is not a direct cause but can exacerbate transmission issues, so fluid levels and condition should be checked during diagnosis.

10. Do I need professional help to fix the P0723 code on a 2014 GMC Sierra?

If you are experienced with vehicle diagnostics and repairs, you may be able to fix it yourself. Otherwise, consulting a professional mechanic is recommended for accurate diagnosis and repair.

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