P0721 2015 Chevrolet Silverado Code - Transmission Output Speed Sensor Performance
Quick Answer
The P0721 diagnostic trouble code (DTC) for a 2015 Chevrolet Silverado relates to the Transmission Output Speed Sensor Performance. Common causes include Faulty output speed sensor, Damaged wiring or connectors, Issues with the transmission control module. 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
- P0721 2015 Chevrolet Silverado indicates Transmission Output Speed Sensor Performance.
- Common causes
- Common causes include Faulty output speed sensor, Damaged wiring or connectors, Issues with the transmission control module.
- 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 P0721 2015 Chevrolet Silverado Description
The P0721 diagnostic trouble code (DTC) for a 2015 Chevrolet Silverado relates to the Transmission Output Speed Sensor Performance. This code indicates that there is a problem with the output speed sensor, which is responsible for monitoring the speed of the output shaft of the transmission. The output speed sensor plays a crucial role in the proper functioning of the transmission system by providing data to the vehicle's computer to help determine shift points and ensure smooth gear changes.
Common Causes of P0721 2015 Chevrolet Silverado
- Faulty output speed sensor
- Damaged wiring or connectors
- Issues with the transmission control module
- Low transmission fluid levels
- Internal transmission damage
Symptoms of P0721 2015 Chevrolet Silverado
- Erratic shifting
- Harsh shifting
- Delayed shifting
- Transmission going into limp mode
- Illumination of the Check Engine Light
How to Fix P0721 2015 Chevrolet Silverado
- Diagnose the issue by using a scan tool to retrieve the DTC and inspect the output speed sensor, wiring, and connectors for any visible damage.
- Replace the faulty output speed sensor if it is determined to be the cause of the problem.
- Repair or replace any damaged wiring or connectors.
- Check and refill transmission fluid levels if low.
- Clear the DTC and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0721 2015 Chevrolet Silverado
The typical repair costs for addressing a P0721 code on a 2015 Chevrolet Silverado can range from $150 to $400, including parts and labor. However, it is essential to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Auto repair shops commonly charge between $80 and $150 per hour for labor, with rates potentially higher in metropolitan areas or at dealerships and lower at independent shops. It is advisable to check local rates for a more precise estimate.
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