P0723 2015 GMC Sierra Code - Transmission Output Speed Sensor Circuit Intermittent
Quick Answer
The P0723 diagnostic trouble code (DTC) for a 2015 GMC Sierra indicates a problem with the Transmission Output Speed Sensor Circuit being intermittent. Common causes include Faulty transmission output speed sensor, Damaged wiring or connectors in the sensor circuit, Malfunctioning 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 2015 GMC Sierra indicates Transmission Output Speed Sensor Circuit Intermittent.
- Common causes
- Common causes include Faulty transmission output speed sensor, Damaged wiring or connectors in the sensor circuit, Malfunctioning 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.
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Code P0723 2015 GMC Sierra Description
The P0723 diagnostic trouble code (DTC) for a 2015 GMC Sierra indicates a problem 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 proper operation of the transmission control module (TCM) and the engine control module (ECM) to determine shift points, torque converter lockup, and other transmission functions.
Common Causes of P0723 2015 GMC Sierra
- Faulty transmission output speed sensor
- Damaged wiring or connectors in the sensor circuit
- Malfunctioning TCM
- Low transmission fluid levels
- Electrical interference or corrosion in the sensor circuit
Symptoms of P0723 2015 GMC Sierra
- Harsh or delayed shifting
- Erratic shifting behavior
- Loss of transmission function
- Poor acceleration
- Reduced fuel efficiency
How to Fix P0723 2015 GMC Sierra
- Begin by diagnosing the specific cause of the intermittent signal from the transmission output speed sensor using a scan tool to retrieve live data and pinpoint the issue.
- Inspect the wiring and connectors in the sensor circuit for any damage, corrosion, or loose connections. Repair or replace as necessary.
- Test the transmission output speed sensor itself using a multimeter to check for proper resistance and voltage readings. Replace the sensor if it fails the test.
- Clear the DTC from the TCM memory after making the necessary repairs and perform a road test to ensure the transmission is operating correctly.
- If the issue persists, further diagnosis may be required to check for any underlying problems with the TCM or other transmission components.
Cost to Fix P0723 2015 GMC Sierra
The typical repair costs for addressing a P0723 code on a 2015 GMC Sierra can vary depending on the specific cause of the issue. Parts such as a new transmission output speed sensor can range from $50 to $150, while labor costs can add another $100 to $200. Overall, the total repair cost for this issue may fall in the range of $150 to $350. However, it's important to note that actual repair costs can fluctuate based on location, vehicle make and model, and labor rates at auto repair shops. It's advisable to obtain a detailed estimate from a trusted mechanic or dealership before proceeding with the repair.
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Frequently Asked Questions about P0723 2015 GMC Sierra Code
What does the OBDII code P0723 mean for a 2015 GMC Sierra?
P0723 indicates an intermittent issue in the Transmission Output Speed Sensor Circuit, which measures the rotational speed of the transmission output shaft.
What are common symptoms of P0723 in a 2015 GMC Sierra?
Symptoms may include erratic shifting, transmission slipping, reduced fuel efficiency, and the check engine light turning on.
What causes the P0723 code in a 2015 GMC Sierra?
Common causes include a faulty output speed sensor, wiring issues such as frayed or damaged wires, loose electrical connections, or a malfunctioning transmission control module (TCM).
How can I diagnose the P0723 code on my 2015 GMC Sierra?
Start by inspecting the output speed sensor and its wiring for damage or loose connections. Use a diagnostic scanner to monitor sensor readings and check for circuit continuity.
Can I drive my 2015 GMC Sierra with the P0723 code?
Driving with this code can cause transmission issues and potential damage. It’s best to address the problem as soon as possible to avoid further complications.
How do I fix the P0723 code on a 2015 GMC Sierra?
Repairs may include replacing the output speed sensor, repairing or replacing damaged wiring, cleaning electrical connectors, or reprogramming or replacing the transmission control module.
How much does it cost to fix the P0723 code on a 2015 GMC Sierra?
Costs vary depending on the issue, but replacing the output speed sensor typically costs $100–$300, while wiring or TCM repairs may be more expensive.
Can a dirty or corroded connector cause the P0723 code?
Yes, corrosion or debris on the sensor’s connectors can disrupt the electrical signal and trigger the code.
What tools are needed to diagnose and repair the P0723 code?
You’ll need a diagnostic scanner, a multimeter to test electrical continuity, and basic tools to inspect and replace the sensor or wiring.
Is the P0723 code related to other transmission issues?
Yes, P0723 can lead to or be associated with other transmission codes, especially if the sensor’s malfunction affects gear-shifting or speed calculations.
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