Engine-CodesDodge – P1502 Dodge

P1502 Dodge Code - Vehicle Speed Sensor 1/2 Correlation Non Drive Wheels

Quick Answer

The P1502 diagnostic trouble code (DTC) for Dodge vehicles specifically refers to a Vehicle Speed Sensor 1/2 Correlation Non Drive Wheels issue. Common causes include Faulty speed sensors on the non-drive wheels, Damaged wiring or connectors leading to the speed sensors, Corrosion or debris affecting sensor functionality. 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
P1502 Dodge indicates Vehicle Speed Sensor 1/2 Correlation Non Drive Wheels.
Common causes
Common causes include Faulty speed sensors on the non-drive wheels, Damaged wiring or connectors leading to the speed sensors, Corrosion or debris affecting sensor functionality.
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.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1502 Dodge Description

The P1502 diagnostic trouble code (DTC) for Dodge vehicles specifically refers to a Vehicle Speed Sensor 1/2 Correlation Non Drive Wheels issue. This means that there is a discrepancy between the speed of the vehicle as detected by the two speed sensors on the non-drive wheels. In a typical vehicle, there are usually two speed sensors, one on each of the front wheels or rear wheels, depending on the drive configuration. These sensors are responsible for sending signals to the vehicle's computer system to determine the speed of the vehicle.

OBDII Code P1502 Dodge - Vehicle Speed Sensor 1/2 Correlation Non Drive Wheels
P1502 Dodge Code - Vehicle Speed Sensor 1/2 Correlation Non Drive Wheels

Common Causes of P1502 Dodge

  1. Faulty speed sensors on the non-drive wheels
  2. Damaged wiring or connectors leading to the speed sensors
  3. Corrosion or debris affecting sensor functionality
  4. Issues with the vehicle's computer system interpreting speed data

Symptoms of P1502 Dodge

  1. Inaccurate speedometer readings
  2. Erratic shifting patterns
  3. ABS or traction control warning lights illuminated on the dashboard
  4. Loss of traction control functionality
  5. Poor braking performance

How to Fix P1502 Dodge

  1. Diagnose the specific cause of the correlation issue by conducting a thorough inspection of the speed sensors, wiring, and connectors.
  2. Replace any faulty speed sensors on the non-drive wheels and ensure proper installation.
  3. Repair or replace any damaged wiring or connectors leading to the speed sensors.
  4. Clear the DTC and perform a test drive to ensure the issue has been resolved.
  5. If necessary, recalibrate the vehicle's computer system to ensure accurate speed readings.

Cost to Fix P1502 Dodge

The typical repair costs for resolving a P1502 DTC related to a Vehicle Speed Sensor 1/2 Correlation Non Drive Wheels issue can range from $200 to $500, including parts and labor. However, it is essential to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It is advisable to obtain quotes from multiple reputable auto repair shops to get a more accurate estimate for this repair.

When is the Code Detected?

The Engine Control Module (ECM) has detected that the rear wheel speed is greater than the front

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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.

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