P1502 Code - Vehicle Speed Sensor Intermittent

Quick Answer

The P1502 code indicates a problem with the vehicle speed sensor that is intermittent, meaning that the sensor is not consistently providing accurate data to the vehicle's computer. Common causes include Faulty vehicle speed sensor, Damaged wiring or connectors leading to the sensor, Corrosion or debris affecting the sensor's performance. 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 indicates Vehicle Speed Sensor Intermittent.

Common causes

Common causes include Faulty vehicle speed sensor, Damaged wiring or connectors leading to the sensor, Corrosion or debris affecting the sensor's performance.

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.

• Description
• Common Causes
• Symptoms
• How To Fix
• Cost to Fix
• FAQs
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Common Causes of P1502

Symptoms of P1502

How to Fix P1502

Cost to Fix P1502

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Code P1502 Information for Specific Makes

• P1502 Audi — Fuel Pump Relay Circuit Short To Positive
• P1502 BMW — Idle Speed Control Valve Closing Solenoid Control Circuit Signal High or Low
• P1502 Buick — Theft Deterrent Fuel Enable Signal Not Received
• P1502 Cadillac — Theft Deterrent Fuel Enable Signal Not Received
• P1502 Chevrolet — Theft Deterrent Fuel Enable Signal Not Received
• P1502 Chrysler — Vehicle Speed Sensor 1/2 Correlation Non Drive Wheels
• P1502 Dodge — Vehicle Speed Sensor 1/2 Correlation Non Drive Wheels
• P1502 Ford — Vehicle Speed Sensor Intermittent
• P1502 GMC — Theft Deterrent Fuel Enable Signal Not Received
• P1502 Hyundai — Battery Not Charging
• P1502 Jeep — Vehicle Speed Sensor 1/2 Correlation Non Drive Wheels
• P1502 KIA — Battery Not Charging
• P1502 Lincoln — Vehicle Speed Sensor Intermittent
• P1502 Mazda — Vehicle Speed Signal Malfunction
• P1502 Mercury — Vehicle Speed Sensor Intermittent
• P1502 MINI — Idle Speed Control Valve Closing Solenoid Control Circuit Signal High or Low
• P1502 Mitsubishi — Vehicle Speed Sensor 1/2 Correlation Non Drive Wheels
• P1502 Subaru — Radiator Fan Function Problem
• P1502 Volkswagen — Fuel Pump Relay Circuit Short To Positive

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.

Frequently Asked Questions about P1502 Code

1. What are the common symptoms of OBDII code P1502 (Vehicle Speed Sensor Intermittent)?

The common symptoms of P1502 include erratic speedometer readings, cruise control issues, and the illumination of the Check Engine Light.

2. What could cause OBDII code P1502 to trigger?

The Vehicle Speed Sensor (VSS) malfunctioning or experiencing intermittent electrical connection issues can trigger code P1502.

3. How does the Vehicle Speed Sensor (VSS) affect the vehicle's performance?

The VSS provides crucial data to various vehicle systems, such as the speedometer, cruise control, and transmission control module, impacting their functionality.

4. What are some DIY repair tips for addressing OBDII code P1502?

Check the VSS wiring harness for damage or loose connections, inspect the sensor for debris or corrosion, and consider replacing the VSS if necessary.

5. Can driving with OBDII code P1502 cause further damage to the vehicle?

Continuing to drive with code P1502 may lead to inaccurate speed readings, potential transmission issues, and reduced fuel efficiency, so it's advisable to address the problem promptly.

6. How can a mechanic diagnose OBDII code P1502?

A mechanic can use a professional OBDII scanner to retrieve the code, perform a visual inspection of the VSS and its wiring, conduct tests to verify sensor functionality, and clear the code for further monitoring.

7. Is it safe to ignore OBDII code P1502 if the vehicle seems to be driving fine?

Even if the vehicle seems to be driving normally, it's essential to address code P1502 promptly to prevent potential safety hazards, transmission problems, or further damage to other components.

8. What are the typical repair costs associated with fixing OBDII code P1502?

The repair costs for resolving code P1502 can vary depending on the root cause, but they typically range from $100 to $300 for parts and labor.

9. Can a faulty Vehicle Speed Sensor (VSS) affect the vehicle's fuel economy?

Yes, a malfunctioning VSS can impact the vehicle's fuel economy by causing inaccuracies in speed-dependent systems like the transmission, leading to inefficient performance.

10. How long does it take to repair OBDII code P1502 related to the Vehicle Speed Sensor?

The repair time for code P1502 can vary based on the exact issue with the VSS, but a skilled mechanic can typically diagnose and fix the problem within 1 to 2 hours.