Engine-CodesChrysler – P1502 Chrysler

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

Quick Answer

The P1502 Chrysler diagnostic trouble code (DTC) indicates a problem with the correlation between the vehicle speed sensor 1 and vehicle speed sensor 2 on the non-drive wheels of the vehicle. Common causes include Faulty vehicle speed sensors, Damaged wiring or connectors, ECM malfunction. 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 Chrysler indicates Vehicle Speed Sensor 1/2 Correlation Non Drive Wheels.
Common causes
Common causes include Faulty vehicle speed sensors, Damaged wiring or connectors, ECM malfunction.
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 Chrysler Description

The P1502 Chrysler diagnostic trouble code (DTC) indicates a problem with the correlation between the vehicle speed sensor 1 and vehicle speed sensor 2 on the non-drive wheels of the vehicle. In modern vehicles, the vehicle speed sensor (VSS) plays a crucial role in providing the engine control module (ECM) with data on the vehicle's speed, which is vital for various systems such as the transmission, ABS, and traction control.

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

Common Causes of P1502 Chrysler

  1. Faulty vehicle speed sensors
  2. Damaged wiring or connectors
  3. ECM malfunction
  4. Corrosion or debris affecting sensor operation
  5. Incorrect tire size affecting sensor readings

Symptoms of P1502 Chrysler

  1. Erratic shifting in the transmission
  2. Inaccurate speedometer readings
  3. ABS or traction control warning lights illuminated on the dashboard
  4. Loss of fuel efficiency
  5. Harsh or delayed engagement when accelerating

How to Fix P1502 Chrysler

  1. Diagnose the issue by using a scan tool to read the DTC and perform a visual inspection of the vehicle speed sensors and wiring.
  2. Test the vehicle speed sensors using a multimeter to check for proper resistance values.
  3. Replace the faulty vehicle speed sensor or repair any damaged wiring or connectors.
  4. Clear the DTC from the ECM memory and test drive the vehicle to ensure the issue has been resolved.
  5. If the problem persists, further diagnosis may be required to check for ECM issues or other underlying problems.

Cost to Fix P1502 Chrysler

The typical repair costs for addressing a P1502 Chrysler code can vary depending on the specific cause of the issue. Generally, replacing a faulty vehicle speed sensor can cost between $100 to $200, including parts and labor. However, if there are wiring issues or ECM problems, the cost could increase significantly. It's advisable to consult with a trusted mechanic or auto repair shop for a more accurate estimate based on the specific circumstances of your vehicle.

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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