Are you wondering what the automobile fault code P0721 means? Well, when this code appears, you may notice that your engine light is on or that you have a service engine soon warning light.

Additionally, your speedometer may be giving you improper readings, and you might experience shifting problems. The most common cause of this fault code is a faulty Output Speed Sensor (OSS).

It could also be due to an open or shorted OSS harness, poor electrical connection in the OSS circuit, or a faulty Powertrain Control Module (PCM). To fix this issue, you should visually inspect the wiring harness and connectors, checking for any damage or corrosion. It’s important to address this problem promptly as it can affect your vehicle’s performance.

The repair time for this issue is estimated to be around 1.0.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level10.0 (Out of 10)

If you’re experiencing an illuminated engine light, speedometer issues, or potential shifting problems, you may be dealing with the p0721 fault code.

  • The symptoms of the automobile fault code p0721 include: Engine Light ON (or Service Engine Soon Warning Light), speedometer improper reading, and possible shifting problems.

The automobile fault code p0721 can be caused by a faulty Output Speed Sensor (OSS), an open or shorted Output Speed Sensor harness, a poor electrical connection in the Output Speed Sensor circuit, or a faulty Powertrain Control Module (PCM).

  • The fault code P0721 can be caused by a faulty Output Speed Sensor (OSS), an open or shorted Output Speed Sensor harness, a poor electrical connection in the Output Speed Sensor circuit, or a faulty Powertrain Control Module (PCM).

To fix the p0721 fault code, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code p0721, start by checking the possible causes mentioned above.
  • Then, visually inspect the wiring harness and connectors for any damage.
  • Look for broken, bent, pushed out, or corroded pins in the connectors.
  • This fix should take approximately 1.0 hour.

The factors influencing the cost of diagnosing and fixing the automobile fault code p0721 are the estimated repair time of 1.0 hour and the typical hourly rate charged by auto repair shops, which ranges between $75 and $150.

The P0721 fault code refers to a problem with the Output Shaft Speed (OSS) Sensor in the vehicle.

This sensor provides important information to the Powertrain Control Module (PCM) about the rotational speed of an output shaft.

The PCM uses this information to control and diagnose the behavior of the powertrain. In some cases, the OSS sensor is also used to determine the vehicle’s speed.

The location of the sensor may vary depending on the specific application.

If the PCM detects that the OSS sensor is out of range, it will set the P0721 fault code.

This code indicates that there is an issue with the range or performance of the output shaft speed sensor.

What are the symptoms of the automobile fault code P0721?

If you’re experiencing the P0721 fault code, you might notice that your engine light is on or that your speedometer is giving you improper readings. You might also experience shifting problems. These symptoms could be caused by a faulty Output Speed Sensor (OSS), an open or shorted OSS harness, a poor electrical connection in the OSS circuit, or a faulty Powertrain Control Module (PCM). To fix the issue, visually inspect the wiring harness and connectors, checking for any damage or corrosion. Additionally, look out for broken, bent, pushed out, or corroded pins in the connectors.

What are the possible causes of the P0721 fault code?

If you’re experiencing an engine light on or a service engine soon warning light, along with an improper reading on your speedometer and possible shifting problems, the P0721 fault code may be the culprit. This code is often caused by a faulty Output Speed Sensor (OSS), an open or shorted OSS harness, a poor electrical connection in the OSS circuit, or a faulty Powertrain Control Module (PCM). To fix this issue, visually inspect the wiring harness and connectors, checking for any damage or corrosion. Additionally, look out for broken, bent, pushed out, or corroded pins in the connectors.

How can the P0721 fault code be fixed?

To fix the P0721 fault code, start by checking the possible causes mentioned above. Take a close look at the wiring harness and connectors, making sure there are no visible damages. Check for any broken, bent, pushed out, or corroded pins in the connectors. This will help identify if the issue lies with a faulty Output Speed Sensor (OSS), an open or shorted sensor harness, a poor electrical connection in the sensor circuit, or a faulty Powertrain Control Module (PCM).

p0721 error fault code explained

If you’re experiencing an engine light on, speedometer issues, or possible shifting problems, it could be due to a faulty Output Speed Sensor (OSS) or a problem with the wiring harness or connectors. To fix this, visually inspect the wiring and connectors for any damage or corrosion. Check for broken or bent pins as well.

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