AutoCodes – Mercury – P0722 Mercury

P0722 Mercury Code - Output Shaft Speed Sensor No Signal

Quick Answer

The Output Shaft Speed (OSS) Sensor provides the Powertrain Control Module (PCM) with information about the rotational speed of an output shaft. Common causes include Faulty Output Speed Sensor (OSS), Output Speed Sensor harness is open or shorted, 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: P0722 Mercury indicates Output Shaft Speed Sensor No Signal.
Common causes: Common causes include Faulty Output Speed Sensor (OSS), Output Speed Sensor harness is open or shorted, 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 1,070

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 Aug 26, 2022

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0722 Mercury Description

The Output Shaft Speed (OSS) Sensor provides the Powertrain Control Module (PCM) with information about the rotational speed of an output shaft. The PCM uses the information to control and diagnose powertrain behavior. In some applications, the sensor is also used as the source of vehicle speed. The sensor may be physically located in different places on the vehicle, depending upon the specific application. The design of each speed sensor is unique and depends on which powertrain control feature uses the information that is generated. The Diagnostic Trouble Code (DTC) will set if the PCM detects no signal from the OSS sensor.

OBDII Code P0722 Mercury - Output Shaft Speed Sensor No Signal - AutoCodes.com — P0722 Mercury Code - Output Shaft Speed Sensor No Signal

What does this mean?

What are the Possible Causes of the DTC P0722 Mercury?

Faulty Output Speed Sensor (OSS)
Output Speed Sensor harness is open or shorted
Output Speed Sensor circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P0722 Mercury?

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 P0722 Mercury 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.

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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 Mercury Code

1. What are common symptoms of OBDII code P0722 on a Mercury vehicle?

The common symptoms of OBDII code P0722 on a Mercury vehicle include issues with shifting gears, erratic speedometer readings, and the transmission going into limp mode.

2. What does the OBDII code P0722 Mercury indicate?

OBDII code P0722 on a Mercury indicates that the vehicle's engine control module (ECM) has detected no signal from the output shaft speed sensor.

3. What are possible causes of the output shaft speed sensor no signal error (P0722) on a Mercury?

Possible causes of the output shaft speed sensor no signal error (P0722) on a Mercury include a faulty speed sensor, damaged wiring or connectors, low transmission fluid, or a malfunctioning ECM.

4. How can I diagnose the output shaft speed sensor issue causing OBDII code P0722 on my Mercury?

To diagnose the output shaft speed sensor issue causing OBDII code P0722 on your Mercury, you can use a scan tool to check for the code, inspect the wiring and connectors for damage, and test the sensor's resistance and output voltage.

5. Can a faulty output shaft speed sensor be repaired, or does it need to be replaced to resolve OBDII code P0722 on a Mercury?

In most cases, a faulty output shaft speed sensor causing OBDII code P0722 on a Mercury will need to be replaced with a new sensor to resolve the issue effectively.

6. Is it safe to continue driving my Mercury with OBDII code P0722 (Output Shaft Speed Sensor No Signal)?

It is not recommended to continue driving your Mercury with OBDII code P0722, as it can lead to further transmission problems and potential safety hazards. It's best to address the issue promptly.

7. How much does it typically cost to replace the output shaft speed sensor on a Mercury to fix OBDII code P0722?

The cost of replacing the output shaft speed sensor on a Mercury to fix OBDII code P0722 can vary depending on the model and labor rates, but it generally ranges from $100 to $300 for the sensor itself, plus labor costs.

8. Can a DIY enthusiast replace the output shaft speed sensor on a Mercury to clear OBDII code P0722?

Replacing the output shaft speed sensor on a Mercury to clear OBDII code P0722 can be a moderately challenging task, so it's recommended to have some mechanical experience and the necessary tools before attempting a DIY repair.

9. After replacing the output shaft speed sensor to address OBDII code P0722 on my Mercury, do I need to reset the code or will it clear on its own?

After replacing the output shaft speed sensor to address OBDII code P0722 on your Mercury, you may need to use a scan tool to reset the code and clear the error message from the ECM memory.

10. Will fixing OBDII code P0722 on my Mercury improve the vehicle's performance and fuel efficiency?

Fixing OBDII code P0722 on your Mercury by resolving the output shaft speed sensor issue can improve the vehicle's performance, transmission operation, and fuel efficiency, restoring normal driving conditions.