P0723 Output Shaft Speed Sensor Circuit Intermittent / Erratic

Content

P0723 – OBD-II Trouble Code Technical Description
What does trouble code P0723 mean?
Possible reasons
What are the symptoms of trouble code P0723?
How to diagnose trouble code P0723?
- Diagnostic errors
How serious is trouble code P0723?
What repairs will resolve the P0723 code?
P0723 – Brand Specific Information

P0723 – OBD-II Trouble Code Technical Description

Trouble P0723 indicates an intermittent/intermittent output shaft speed sensor circuit signal.

What does the fault code mean P0723?

Trouble code P0723 indicates a problem with the output shaft speed sensor circuit signal. This means that the engine control module (PCM) is receiving an intermittent, erroneous, or incorrect signal from this sensor. Error codes may also appear along with this code. P0720, P0721 и P0722, indicating that there is a problem with the output shaft speed sensor or the input shaft speed sensor.

Possible reasons

Some possible reasons for the P0723 trouble code:

Defect or breakdown of the output shaft speed sensor.
Poor electrical connection or break in the wires connecting the sensor to the PCM.
Incorrectly configured or damaged speed sensor.
Engine control module (PCM) malfunction.
Problems with the vehicle's electrical system, such as overheating, short circuit or open circuit in the sensor power supply.
Mechanical problems with the output shaft that may affect sensor performance.

What are the symptoms of a fault code? P0723?

Some possible symptoms when trouble code P0723 appears:

Unstable engine operation or problems with idling.
Loss of engine power.
Uneven or jerky gear shifts.
The “Check Engine” indicator on the dashboard lights up.
Failure of the engine speed control system (cruise control), if used.

How to diagnose a fault code P0723?

To diagnose DTC P0723, follow these steps:

Checking the Check Engine indicator: Check if the “Check Engine” indicator on the instrument panel is illuminated. If so, this may indicate a problem with the output shaft speed sensor.
Use an OBD-II scanner: Connect the OBD-II scanner to the vehicle's diagnostic port and read the trouble codes. If P0723 is present, it confirms there is a problem with the output shaft speed sensor.
Checking wires and connections: Carefully inspect the wires and connectors connecting the output speed sensor to the PCM. Make sure all connections are intact and free of corrosion, and that wires are not broken or damaged.
Checking the speed sensor: Check the output shaft speed sensor itself for damage or corrosion. Replace it if necessary.
PCM diagnostics: If all the previous steps do not reveal the problem, there may be a problem with the PCM itself. In this case, it is recommended to conduct additional diagnostics or replace the PCM.
Checking for Mechanical Problems: In some cases, the problem may be caused by mechanical problems with the output shaft. Check it for damage or wear.

If you are unsure of your diagnostic skills or do not have the necessary equipment, it is best to contact a qualified auto mechanic for further analysis and repair.

Diagnostic errors

When diagnosing DTC P0723, the following errors may occur:

Misinterpretation of symptoms: Some symptoms, such as trouble shifting or unusual noises from the transmission, may be misidentified as a problem with the output shaft speed sensor. It is important to conduct a thorough diagnosis to rule out other possible causes.
Insufficient checking of wires and connections: The problem is not always directly with the sensor. The condition of the wires and connections must be carefully checked, as incorrect or damaged electrical connections may result in erroneous data from the sensor.
Malfunction of the sensor itself: If you do not check the sensor thoroughly, you may miss its malfunction. You need to make sure that the sensor is working correctly or replace it if necessary.
Ignoring other error codes: Sometimes a sensor problem can be related to other components or systems in the transmission. It is also important to check for other error codes that may indicate related problems.
Malfunctioning PCM: Sometimes the problem may be due to a problem with the engine control module (PCM) itself. You must ensure that all other possible causes have been ruled out before concluding that the PCM is faulty.

Finding these errors and correcting them will help you make a more accurate diagnosis and resolve your DTC P0723 problem.

How serious is the fault code? P0723?

Trouble code P0723 is serious because it indicates a problem with the output shaft speed sensor, which is essential for proper transmission operation. Incorrect data from this sensor can result in an incorrect shift strategy, which can cause serious problems with the vehicle's performance.

Symptoms associated with this error code may include abnormal transmission behavior, such as jerking when shifting gears, unusual sounds or vibrations. If the output shaft speed sensor problem is not resolved, it can cause additional wear and damage to the transmission.

Therefore, it is recommended to immediately contact a specialist for diagnosis and repair to avoid further damage to the transmission and ensure the safe operation of the vehicle.

What repair will help eliminate the code? P0723?

To resolve DTC P0723, follow these steps:

Replacing the Output Shaft Speed Sensor: If the sensor is faulty and producing incorrect signals, it should be replaced with a new one that meets the manufacturer's specifications.
Checking and Repairing Electrical Connections: Before replacing the sensor, check the electrical connections and wires for damage, corrosion, or breaks. If necessary, they should be restored or replaced.
Diagnosing other components: Sometimes the problem can be related to other components of the transmission, such as the transmission control module (TCM) or the transmission itself. Carrying out a comprehensive diagnosis can help identify and eliminate additional problems.
Programming and Tuning: After replacing a sensor or other components, the control system may need to be programmed or tuned to operate correctly.

It is important to contact a qualified auto mechanic or auto repair shop for diagnosis and repair to ensure that the problem is corrected correctly and prevent possible consequences.

What is P0723 Engine Code [Quick Guide]