Engine-CodesGMC – P0722 2015 GMC Sierra

P0722 2015 GMC Sierra Code - Transmission Output Speed Sensor Circuit No Signal

Quick Answer

The P0722 diagnostic trouble code (DTC) for a 2015 GMC Sierra indicates a problem with the transmission output speed sensor circuit, specifically the absence of a signal. Common causes include Faulty transmission output speed sensor, Damaged or corroded wiring/connectors in the speed sensor circuit, Issues with the 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
P0722 2015 GMC Sierra indicates Transmission Output Speed Sensor Circuit No Signal.
Common causes
Common causes include Faulty transmission output speed sensor, Damaged or corroded wiring/connectors in the speed sensor circuit, Issues with the 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.
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P0722 2015 GMC Sierra Description

The P0722 diagnostic trouble code (DTC) for a 2015 GMC Sierra indicates a problem with the transmission output speed sensor circuit, specifically the absence of a signal. The transmission output speed sensor is responsible for monitoring the speed of the output shaft of the transmission. This information is crucial for the transmission control module (TCM) to determine shift points and overall transmission operation. When the TCM does not receive a signal from the output speed sensor, it can lead to various transmission issues and affect the vehicle's performance.

OBDII Code P0722 2015 GMC Sierra - Transmission Output Speed Sensor Circuit No Signal
P0722 2015 GMC Sierra Code - Transmission Output Speed Sensor Circuit No Signal

Common Causes of P0722 2015 GMC Sierra

  1. Faulty transmission output speed sensor
  2. Damaged or corroded wiring/connectors in the speed sensor circuit
  3. Issues with the TCM
  4. Low transmission fluid level or contaminated fluid
  5. Internal transmission damage

Symptoms of P0722 2015 GMC Sierra

  1. Erratic or harsh shifting
  2. Delayed shifting
  3. Transmission going into limp mode
  4. Check Engine Light illuminated
  5. Reduced fuel efficiency

How to Fix P0722 2015 GMC Sierra

  1. Begin by diagnosing the issue using a scan tool to confirm the P0722 code and pinpoint the exact cause.
  2. Inspect the wiring and connectors in the transmission output speed sensor circuit for any damage or corrosion. Repair or replace as needed.
  3. Test the transmission output speed sensor using a multimeter to ensure it is functioning correctly. Replace if faulty.
  4. Check the transmission fluid level and condition. Top off or replace the fluid if necessary.
  5. Clear the DTC and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0722 2015 GMC Sierra

The cost of repairing a P0722 code on a 2015 GMC Sierra can vary depending on the specific cause of the issue. On average, the repair cost can range from $150 to $500, including parts and labor. However, it is important to note that labor rates at auto repair shops can vary significantly based on location, vehicle make and model, and the severity of the issue. It's recommended to consult with a trusted mechanic or dealership for a more accurate estimate based on your specific circumstances.

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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 P0722 2015 GMC Sierra Code

1. What does OBDII code P0722 for a 2015 GMC Sierra mean?

The code P0722 indicates a Transmission Output Speed Sensor Circuit No Signal error in the vehicle's transmission system.

2. What are common symptoms of a P0722 OBDII code in a 2015 GMC Sierra?

Common symptoms include erratic speedometer readings, issues with shifting gears, and the vehicle going into limp mode.

3. What are possible causes of the P0722 code in a 2015 GMC Sierra?

Possible causes include a faulty output speed sensor, damaged wiring or connectors in the sensor circuit, or issues with the vehicle's transmission control module.

4. How can I diagnose a P0722 code in my 2015 GMC Sierra?

Diagnosing the P0722 code involves using an OBDII scanner to read the code, checking the output speed sensor for proper operation, inspecting the sensor circuit for any damage, and testing the transmission control module.

5. Can I continue driving my 2015 GMC Sierra with a P0722 code?

It is not recommended to continue driving with a P0722 code as it can lead to further damage to the transmission system. It's best to address the issue promptly.

6. How can I repair a P0722 code in my 2015 GMC Sierra?

Repairing a P0722 code may involve replacing the output speed sensor, repairing damaged wiring or connectors, or reprogramming the transmission control module.

7. Are there any DIY tips for fixing a P0722 code in a 2015 GMC Sierra?

DIY tips include checking and cleaning the sensor connectors, inspecting the wiring harness for damage, and ensuring proper sensor alignment during replacement.

8. How much does it cost to fix a P0722 OBDII code in a 2015 GMC Sierra?

The cost of fixing a P0722 code can vary depending on the cause of the issue, but it may range from $100 to $500 for parts and labor.

9. Will resetting the OBDII code P0722 in my 2015 GMC Sierra make it go away?

Resetting the code may temporarily clear the error, but if the underlying issue is not addressed, the code is likely to reappear.

10. Can a P0722 code in a 2015 GMC Sierra cause other problems if left unfixed?

Yes, leaving a P0722 code unresolved can lead to transmission issues, poor vehicle performance, and potential safety hazards while driving.

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