Engine-CodesMercury – P163D Mercury

P163D Mercury Code - Secondary Generator Field Terminal Circuit High

Quick Answer

The P163D diagnostic trouble code (DTC) for Mercury vehicles refers to the Secondary Generator Field Terminal Circuit High. Common causes include Faulty field terminal circuit, Loose or corroded electrical connections, Defective generator. 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
P163D Mercury indicates Secondary Generator Field Terminal Circuit High.
Common causes
Common causes include Faulty field terminal circuit, Loose or corroded electrical connections, Defective generator.
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 Aug 25, 2024
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Code P163D Mercury Description

The P163D diagnostic trouble code (DTC) for Mercury vehicles refers to the Secondary Generator Field Terminal Circuit High. This code indicates a problem with the field terminal circuit in the vehicle's secondary generator. The secondary generator is responsible for generating electrical power to charge the vehicle's battery and power various electrical components. When the field terminal circuit is reading high, it means that there is an issue with the voltage levels in this circuit, which can lead to insufficient charging of the battery and electrical system malfunctions.

OBDII Code P163D Mercury - Secondary Generator Field Terminal Circuit High
P163D Mercury Code - Secondary Generator Field Terminal Circuit High

Common Causes of P163D Mercury

  1. Faulty field terminal circuit
  2. Loose or corroded electrical connections
  3. Defective generator
  4. Wiring issues
  5. Faulty voltage regulator

Symptoms of P163D Mercury

  1. Battery warning light on the dashboard
  2. Dimming headlights or interior lights
  3. Difficulty starting the vehicle
  4. Electrical system malfunctions
  5. Engine stalling

How to Fix P163D Mercury

  1. Perform a comprehensive electrical system diagnosis to identify the exact cause of the high voltage in the field terminal circuit.
  2. Inspect and test the generator, voltage regulator, and wiring for any faults.
  3. Repair or replace any damaged or worn-out components in the secondary generator system.
  4. Clear the DTC from the vehicle's computer system and reset any associated warning lights.
  5. Test drive the vehicle to ensure the issue has been resolved and the battery is charging properly.

Cost to Fix P163D Mercury

The cost of repairing a P163D code on a Mercury vehicle can vary depending on the specific cause of the issue and the extent of the repairs needed. On average, the repair costs for this type of issue can range from $200 to $500, including parts and labor. It's important to keep in mind that labor rates and parts prices can vary depending on the location of the repair shop, the vehicle make and model, and the complexity of the repair. Therefore, it's recommended to get a detailed estimate from a qualified mechanic before proceeding with the repairs.

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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.

Frequently Asked Questions about P163D Mercury Code

1. What are common symptoms of OBDII code P163D in a Mercury vehicle?

The common symptoms of OBDII code P163D in a Mercury vehicle may include issues with the secondary generator system, such as the battery not charging properly, dimming lights, or the vehicle stalling.

2. What does the OBDII code P163D Mercury - Secondary Generator Field Terminal Circuit High indicate?

The OBDII code P163D in a Mercury vehicle indicates a high voltage condition in the secondary generator field terminal circuit, which can lead to charging system malfunctions.

3. What are possible causes of the OBDII code P163D in a Mercury vehicle?

Possible causes of the OBDII code P163D in a Mercury vehicle include a faulty generator, damaged wiring or connectors in the field terminal circuit, or issues with the voltage regulator.

4. How can I diagnose the OBDII code P163D in my Mercury vehicle?

To diagnose the OBDII code P163D in your Mercury vehicle, you may need to perform a thorough inspection of the generator system, check the wiring and connectors for damage, and test the voltage regulator for proper functioning.

5. What are some repair tips for fixing the OBDII code P163D in a Mercury vehicle?

Repair tips for fixing the OBDII code P163D in a Mercury vehicle may include repairing or replacing damaged wiring and connectors, testing and replacing the generator if necessary, and ensuring proper voltage regulator operation.

6. Can I drive my Mercury vehicle with the OBDII code P163D?

It is not recommended to drive your Mercury vehicle with the OBDII code P163D, as it can lead to charging system failures and potential stalling of the vehicle. It is best to address the issue as soon as possible.

7. How much does it typically cost to repair the OBDII code P163D in a Mercury vehicle?

The cost of repairing the OBDII code P163D in a Mercury vehicle can vary depending on the extent of the issue and the specific repairs needed. It is advisable to consult a professional mechanic for an accurate estimate.

8. Is the OBDII code P163D a common issue in Mercury vehicles?

The OBDII code P163D related to the secondary generator field terminal circuit high is not extremely common in Mercury vehicles but can still occur due to various reasons such as component failures or wiring issues.

9. Can a DIY enthusiast fix the OBDII code P163D issue in a Mercury vehicle?

While some DIY enthusiasts may have the skills to diagnose and repair the OBDII code P163D in a Mercury vehicle, it is recommended to seek professional help, especially when dealing with the complex charging system components.

10. How can I prevent the OBDII code P163D from occurring in my Mercury vehicle?

To prevent the OBDII code P163D from occurring in your Mercury vehicle, it is essential to regularly inspect and maintain the charging system components, including the generator, wiring, and voltage regulator, to ensure proper functioning.

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