AutoCodes – Chevrolet – P0723 2018 Chevrolet Silverado

P0723 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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 1,573

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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado - Transmission Output Speed Sensor Circuit Intermittent - AutoCodes.com — P0723 2018 Chevrolet Silverado Code - Transmission Output Speed Sensor Circuit Intermittent

What does this mean?

What are the Possible Causes of the DTC P0723 2018 Chevrolet Silverado?

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 2018 Chevrolet Silverado?

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 2018 Chevrolet Silverado 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.

Need more information about the P0723 2018 Chevrolet Silverado code?

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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 2018 Chevrolet Silverado Code

1. What does the OBDII code P0723 mean for a 2018 Chevrolet Silverado?

P0723 indicates an intermittent issue in the Transmission Output Speed Sensor Circuit, which monitors the speed of the transmission output shaft.

2. What are common symptoms of code P0723 in a 2018 Chevrolet Silverado?

Symptoms may include erratic shifting, transmission slipping, reduced fuel efficiency, and the check engine light turning on.

3. What causes the P0723 code in a 2018 Chevrolet Silverado?

Common causes include a faulty output speed sensor, damaged wiring or connectors, corrosion in the circuit, or issues with the transmission control module (TCM).

4. Can I continue driving my 2018 Chevrolet Silverado with code P0723?

While the vehicle may still be drivable, prolonged operation can lead to worsening transmission issues or reduced performance. It's best to address the problem promptly.

5. How can I diagnose the P0723 code in my 2018 Chevrolet Silverado?

Start by inspecting the output speed sensor, its wiring, and connectors for damage or corrosion. Use a scan tool to monitor sensor data and verify circuit functionality.

6. How is the P0723 code typically repaired on a 2018 Chevrolet Silverado?

Repairs may involve replacing the output speed sensor, repairing damaged wiring or connectors, cleaning corroded components, or reprogramming the TCM.

7. How much does it cost to fix the P0723 code on a 2018 Chevrolet Silverado?

Repair costs vary but typically range from $150 to $300, depending on whether the sensor or wiring needs replacement.

8. Can a bad output speed sensor cause transmission failure in my Silverado?

Yes, a faulty sensor can lead to improper transmission operation over time, potentially causing severe damage if left unaddressed.

9. Is the P0723 code related to the transmission control module in any way?

Yes, if the TCM fails to interpret the output speed sensor signal correctly due to intermittent issues, it can trigger the P0723 code.

10. What tools do I need to troubleshoot the P0723 code on my 2018 Chevrolet Silverado?

You'll need an OBDII scan tool, a multimeter for checking wiring continuity, and basic hand tools for inspecting and potentially replacing the sensor.