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Code P0723

Quick reference

P0723 at a glance

Plain-language meaning
This code means that the car's computer is having trouble getting a steady signal from a sensor that tells it how fast the wheels are spinning.
Urgency
Moderate – While the vehicle may still be drivable, it can lead to more serious transmission issues if not addressed.
Difficulty
Moderate
System
Sensor Issue
Tools mentioned
OBD-II scanner, Multimeter, Wrench set

This summary uses the existing diagnostic information shown in full below.

Laymans terms

This code means that the car's computer is having trouble getting a steady signal from a sensor that tells it how fast the wheels are spinning.

Explanation

The output shaft speed sensor provides information about the speed of the transmission's output shaft to the vehicle's computer. If the signal is intermittent, it can cause issues with shifting and vehicle performance.

Technical description

The P0723 code is triggered when the Powertrain Control Module (PCM) detects an intermittent signal from the output shaft speed sensor. This sensor is crucial for monitoring the rotational speed of the transmission's output shaft and ensuring proper transmission operation.

Symptoms

• Erratic or harsh shifting

• Transmission slipping

• Check Engine Light illuminated

Common Causes

• Faulty output shaft speed sensor

• Damaged or corroded wiring/connectors

• Faulty PCM

Glossary

PCM: Powertrain Control Module

OBD-II: On-Board Diagnostics II

Diagnosis steps

• Inspect the output shaft speed sensor for damage.

• Check the wiring and connectors for corrosion or wear.

• Test the sensor's signal with a multimeter.

Repair procedures

• Replace the output shaft speed sensor if faulty.

• Repair or replace damaged wiring/connectors.

• Reprogram or replace the PCM if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Wrench set

Estimated repair cost

$150 - $400

Difficulty level

Moderate

Commonly affected vehicles

• Ford F-150

• Chevrolet Silverado

• Toyota Camry

Preventive measures

• Regularly inspect sensor connections.

• Keep the transmission fluid clean.

• Perform routine vehicle maintenance.

Error code type

Sensor Issue

User experience recommendations

• Avoid driving aggressively until the issue is fixed.

• Schedule a diagnostic check with a professional mechanic.

Warranty information

Check with your vehicle manufacturer for warranty coverage on transmission components.

Historical data

This code has been commonly reported in vehicles with high mileage or those that frequently tow heavy loads.

Urgency level

Moderate – While the vehicle may still be drivable, it can lead to more serious transmission issues if not addressed.

Testing conditions

• Vehicle should be at operating temperature.

• Test on a flat surface for accurate readings.

Component location

The output shaft speed sensor is typically located on the transmission, near the output shaft.

FAQs

Q: Can I drive with a P0723 code?
A: While you may be able to drive, it's not recommended as it can cause further damage to the transmission.

Q: How can I prevent a P0723 code?
A: Regular maintenance and checking sensor connections can help prevent this code.

Optional diagnostic gear

Tools that may help diagnose P0723

THINKCAR ThinkScan Bidirectional diagnostic tool illustration

High-End · Full-system diagnostics

THINKCAR ThinkScan Bidirectional

A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.

Network faults often require full-system access instead of a generic code reader alone.

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Klein Tools MM325 diagnostic tool illustration

Universal · Digital multimeter

Klein Tools MM325

A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.

Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.

View on Amazon
WORKPRO Wiring Repair Kit diagnostic tool illustration

Universal · Wire connectors and repair kit

WORKPRO Wiring Repair Kit

Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.

Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.

View on Amazon

These are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.

Source: ezOBD2 diagnostic database
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