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P0723 OBD2: Output Speed Sensor Circuit Intermittent

P0723 OBD2: Output Speed Sensor Circuit Intermittent

OBD-II Code P0723 indicates an issue with the Output Speed Sensor Circuit. This code is triggered when the Transmission Control Module (TCM) detects an intermittent signal from the output speed sensor, which measures how fast the output shaft of the transmission is spinning.

What Does the P0723 Code Mean?

When the TCM receives an inaccurate or irrational signal from the Output Speed Sensor, it sets the P0723 code. This sensor plays a crucial role in ensuring that the correct gear is engaged based on the output shaft speed.

What Causes the P0723 Code?

Several factors can lead to the P0723 code being triggered, including:

  • Output shaft speed sensor failure
  • Powertrain Control Module (PCM) failure
  • Transmission Control Module (TCM) failure
  • Wiring issues related to the sensor

What Are the Symptoms of the P0723 Code?

Drivers may experience various symptoms when the P0723 code is present, including:

  • Increased fuel consumption
  • Transmission may not shift properly

How Serious Is the P0723 Code?

The P0723 code is classified as urgent, indicating that immediate action is necessary. Ignoring this code can lead to severe damage to the vehicle’s transmission, which may result in costly repairs and pose safety risks to the driver and passengers.

How to Diagnose the P0723 Code

Proper diagnosis of the P0723 code involves several steps:

  1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
  2. Retrieve the stored trouble codes and note any other related codes.
  3. Inspect the wiring and connectors associated with the output speed sensor for damage or corrosion.
  4. Test the output speed sensor for functionality using a multimeter.
  5. Check the TCM and PCM for faults, if necessary.

Common Repairs for the P0723 Code

Common repairs to address the P0723 code may include:

  • Replacing the output shaft speed sensor
  • Repairing or replacing damaged wiring or connectors
  • Reprogramming or replacing the TCM or PCM if they are faulty

How Much Does It Cost to Fix the P0723 Code?

The cost of fixing the P0723 code can vary depending on the underlying issue. On average, repairs may range from $100 to $500, depending on whether a sensor replacement is needed or if there are more complex issues with the TCM or PCM.

Can I Fix the P0723 Code Myself?

If you have experience with automotive repairs, you may be able to address the P0723 code yourself, especially if it involves replacing the output speed sensor or repairing wiring. However, for more complicated issues related to the TCM or PCM, it is advisable to seek professional help to ensure proper diagnosis and repair.

About JC Landry

JC is the Senior Editor at eManualOnline.com, GarageSpot.com, and Drive-My.com, as well as the Webmaster of TheMechanicDoctor.com, only to name a few. He's been a certified Master Mechanic for 15 years, working for various car dealers and specialized repair shops before turning towards blogging about cars and EVs in the hope of helping the next generation of automotive technicians. He also loves cats, Johnny Cash and Subarus.

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