P1502 Mercury Code - Vehicle Speed Sensor Intermittent
Quick Answer
Indicates the Powertrain Control Module (PCM) detected an error in the vehicle speed information. Common causes include Faulty Vehicle speed sensor, Vehicle speed sensor harness is open or shorted, Vehicle speed sensor electrical circuit poor electrical connection. 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 Mercury indicates Vehicle Speed Sensor Intermittent.
- Common causes
- Common causes include Faulty Vehicle speed sensor, Vehicle speed sensor harness is open or shorted, Vehicle speed sensor electrical circuit poor electrical connection.
- 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.
Code P1502 Mercury Description
What are the Possible Causes of the DTC P1502 Mercury?
- Faulty Vehicle speed sensor
- Vehicle speed sensor harness is open or shorted
- Vehicle speed sensor electrical circuit poor electrical connection
- Faulty Wheel Speed Sensors
- Wheel Speed Sensors harness is open or shorted
- Wheel Speed Sensors electrical circuit poor electrical connection
How to Fix the DTC P1502 Mercury?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
1998-2002 Mercury Grand Marquis
1998-2002 Mercury Sable
1998-2001 Mercury Mountaineer
Mercury Factory Service Bulletin OBDII Code P1502
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1502 Mercury code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P1502 Mercury Code
1. What does the OBDII code P1502 mean on a Mercury vehicle?
P1502 on a Mercury indicates an intermittent issue with the Vehicle Speed Sensor (VSS), suggesting the sensor is not consistently sending speed data to the vehicle's computer.
2. What are the common symptoms of the P1502 code in a Mercury?
Symptoms may include erratic or no speedometer reading, poor transmission shifting, reduced fuel efficiency, or the activation of the Check Engine Light.
3. What causes the P1502 code to trigger?
Common causes include a faulty Vehicle Speed Sensor, damaged wiring or connectors related to the VSS, or issues with the vehicle's PCM (Powertrain Control Module).
4. Can I drive my Mercury with the P1502 code active?
Driving with the P1502 code is possible but not recommended, as it can lead to improper transmission operation, reduced performance, and safety concerns.
5. How is the P1502 code diagnosed?
A technician will use a scan tool to confirm the code, inspect the wiring and connectors for damage, and test the Vehicle Speed Sensor for proper operation.
6. How do I fix the P1502 code on my Mercury?
Repairs may involve replacing the Vehicle Speed Sensor, repairing damaged wiring or connectors, and, in rare cases, reprogramming or replacing the PCM.
7. How much does it cost to repair the P1502 code?
Repair costs vary but typically range from $150 to $300, depending on whether the issue is the sensor, wiring, or a more complex problem.
8. Can a bad Vehicle Speed Sensor cause transmission issues?
Yes, a malfunctioning VSS can affect transmission shifting and overall performance, as it provides crucial speed data to the transmission control system.
9. Will clearing the P1502 code fix the problem?
Clearing the code will turn off the Check Engine Light temporarily, but the underlying issue must be resolved to prevent the code from returning.
10. What tools are needed to fix the P1502 code?
Basic tools like a multimeter, an OBDII scanner, and possibly a replacement Vehicle Speed Sensor may be required to diagnose and repair the issue.
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